Nakajima Ki-44 (Tojo)

Here are some images of Hasegawa's 1/32 scale Nakajima Ki-44 (Tojo).

From Wikipedia"

The Nakajima Ki-44 Shōki (鍾馗, Zhong Kui) was a single-engine fighter aircraft used by the Imperial Japanese Army Air Force in World War II. The type first flew in August 1940 and entered service in 1942. The Allied reporting name was "Tojo"; the Japanese Army designation was "Army Type 2 Single-Seat Fighter" (二式単座戦闘機).
It was less maneuverable than its predecessor, the nimble Ki-43, and pilots disliked its poor visibility on the ground, its higher landing speed, and severe restrictions on maneuvering. Yet, it was obvious the Ki-44 was clearly superior overall as a combat aircraft compared to the Ki-43. As an interceptor it could match Allied types in climbs and dives, giving pilots more flexibility in combat and greater pilot confidence than the Ki-43. Moreover, the basic armament of four 12.7mm machine guns or two 12.7mm guns and two 20mm cannons,(plus a few aircraft which carried two Ho-301 40 mm cannons of limited performance) was far superior to the older Ki-43's two 12.7mm Mgs. These characteristics made the fighter despite performance restrictions at altitude, a useful B-29 Superfortress interceptor and one of the Japanese High Command priorities during the last year of war. However, like most of the Japanese aircraft flown in the last part of the war, the low availability of properly trained pilots made them easy targets for experienced, aggressive, and well trained Allied pilots flying superior aircraft.


Nakajima began development of the Ki-44 in 1940 as a pure interceptor with emphasis being placed on airspeed and rate of climb rather than maneuverability. The Japanese Army Air Force specification called for a maximum speed of 600 km/h (370 mph) at 4,000 m (13,130 ft), to be attained in five minutes. A set of Ki-43 like "butterfly" combat flaps was fitted for improved maneuverability. Armament consisted of a pair of 7.7 mm (.303 in) and a pair of 12.7 mm (.50 in) machine guns.
The engine selected for the new interceptor was Nakajima's Ha-41 (a development of the Nakajima Ha-5) 14-cylinder double-row radial, originally intended for bomber aircraft. Although the Ha-41 was not the ideal choice due to its large-diameter cross section, the design team was able to marry this engine to a much smaller fuselage with a narrow cross section. At 1,260mm in diameter, the Ha-41 was 126mm larger in diameter than the 1,144mm Nakajima Sakae (used in the Mitsubishi A6M "Zero" and Nakajima Ki-43 "Hayabusa"). However, the Sakae was only 27.8L in displacement and 1,000hp, while the Ha-41 was 37.5L and made 1,260hp (1,440 in the later Ha-109 version). In any case, since the Sakae wasn't powerful enough, the only alternative available was the Mitsubishi Kinsei, which was slightly smaller than the Ha-41 in diameter, five liters smaller in displacement, and was less powerful. Unfortunately, this was already in demand for many other aircraft, so the Ha-41 was chosen as the best powerplant. In order to achieve its design goals, the wing area was relatively small leading to a high wing loading and a comparatively high landing speed that could be daunting to the average Japanese pilot, who was more used to aircraft with a low wing loading like the Ki-44s predecessors, the Ki-43 and Ki-27.
The first Ki-44 prototype flew in August 1940 and the initial test flights were generally encouraging, with handling considered acceptable considering the high wing loading. Problems encountered included a high landing speed and poor forward visibility during taxiing due to the large radial engine.
A second pre-production batch of 40 aircraft were ordered, which featured four 12.7mm machine guns, a relocated air cooler and main gear doors.
The pre-production Ki-44 aircraft and two of the prototypes were turned over to the Army for service trials on 15 September 1941. The type commenced operations with one experimental unit, the 47th Chutai (Independent Air Company) ("Kawasemi Buntai", Kingfisher Unit) sent to Saigon, Indochina in December 1941 with nine aircraft under the command of Major Toshio Sakagawa.
The unit later became the 47th Sentai, when flying home defense in Japan. More aircraft were later sent to China, and others were used in defense of oil wells in Sumatra, Indonesia, the China-Burma-India theater of operations, Philippines, Japanese metropolitan defense (mainly concentrated around Japan's large industrial cities) and even kamikaze operations in the last stages of the war.
The Ki-44-2c version of the "Tojo" was armed with the relatively compact Ho-301 40mm heavy cannon firing caseless ammunition that was only useful at near point blank range due to very low muzzle velocity. It was used against B-29s by one special kamikaze unit (a company of four aircraft minimum) of the 47th Sentai, which specialized in bomber collision tactics, the Shinten unit ("Shinten Seiku Tai"(Sky Shadow) 47th Sentai (Air Regiment) based at Narimasu airfield), during the defense of Tokyo. It is presumed that at least part of the tactics of these aircraft were to get in very close to the B-29's and attempt a shoot down with the heavy cannon, but also to use the aircraft as a final weapon when the low ammunition supply of the H0-301 was expended. Although in concept it appeared easy, collision with a B-29 at altitude was very difficult to pull off although the tactic certainly created significant anxiety for B-29 squadrons when it occurred.
The Nakajima Ki-44 at one point equipped 12 sentais of the Japanese Army Air Force (the 9th, 22nd, 23rd, 29th, 47th, 59th, 64th, 70th, 85th, 87th, 104th and 246th Air Regiments (Sentai)) which saw action before their (partial) replacement with the far superior (except in maintenance and reliability) Ki-84 Hayates for the final battles of the war. The Manchukuo Air Force also received some examples of these aircraft during wartime.
 After World War II, the Nationalist Chinese 18th Squadron of the 12th Fighter Group was equipped with Ki-44s formerly of the 9th Sentai, which had disbanded in Nanking, and of the 29th Sentai, which had disbanded at Formosa and they participated in the Chinese Civil War. The People's Liberation Army Air Force managed to get hold of aircraft formerly belonging to 22nd and 85th Sentai, who had disbanded in Chosen, the Japanese name for Korea during their imperial rule (1910–1945) over that country. These aircraft were flown by Japanese mercenary pilots, who used them until the last two Ki-44s finally retired in the early 1950s.

Westland Lysander MK III

Here are some more images of Revells 1/32 scale Westland Lysander MK III Matchbox molds. The problem with Matchbox kits is sure they had recessed panel lines but I have always found them to deep. Mind you back in the olden days (1960s 70s) all these molds were hand done so I suppose I shouldn't complain.

Westland Lysander MK. III Special Duties - 2

Here are some more images of Matchbox's 1/32 scale Westland Lysander MK. III  Special Duties (covert operations).

From Wikipedia"

The Westland Lysander was a British army co-operation and liaison aircraft produced by Westland Aircraft used immediately before and during the Second World War. After becoming obsolete in the army co-operation role, the aircraft's exceptional short-field performance enabled clandestine missions using small, unprepared airstrips behind enemy lines to place or recover agents, particularly in occupied France with the French Resistance help. Like other British army air co-operation aircraft it was given the name of a mythical or legendary leader, in this case the Spartan general Lysander.

In August 1941 a new squadron, No. 138 (Special Duties), was formed to undertake missions for the Special Operations Executive to maintain clandestine contact with the French Resistance. Among its aircraft were Lysander Mk IIIs, which flew over and landed in occupied France. While general supply drops could be left to the rest of No. 138's aircraft, the Lysander could insert and remove agents from the continent or retrieve Allied aircrew who had been shot down over occupied territory and had evaded capture. For this role the Mk IIIs were fitted with a fixed ladder over the port side to hasten access to the rear cockpit and a large drop tank under the belly. In order to slip in unobtrusively the Lysanders were painted matt black; operations almost always took place within a week of a full moon, as moonlight was essential for navigation.

The Lysanders flew from secret airfields at Newmarket and later Tempsford, but used regular RAF stations to fuel-up for the actual crossing, particularly RAF Tangmere. Flying without any navigation equipment other than a map and compass, Lysanders would land on short strips of land, such as fields, marked out by four or five torches. They were designed to carry one passenger in the rear cockpit, but in case of urgent necessity three could be carried in extreme discomfort. The pilots of No. 138 and, from early 1942, No. 161 Squadron transported 101 agents to, and recovered 128 agents from Nazi-occupied Europe. The Lysander was successful in this role, and continued to undertake such duties until the liberation of France in 1944.

 Lysander Mk III Powered by one 870 hp (649 kW) Bristol Mercury XX or 30 radial piston engine, 350 delivered from July 1940. Twin 0.303 in (7.7 mm) Browning guns in rear cockpit.

 After the war a number of surplus ex-RCAF Lysanders were employed as aerial applicators with Westland Dusting Service, operating in Alberta and western Canada. Two of these were saved for inclusion in Lynn Garrison's collection to be displayed in Calgary, Alberta.

Supermarine Spitfire Mk. XVI e

Here are some images of PCM's 1/32 scale Supermarine Spitfire MK. XVI e.
This aircraft served with the South African Air Force 1948.

From Wikipedia"
The Mk XVI was the same as the Mk IX in nearly all respects except for the engine, a Merlin 266. The Merlin 266 was the Merlin 66 and was built under licence in the USA by the Packard Motor Company. The "2" was added as a prefix in order to avoid confusion with the engines, as they required different tooling. All Mk XVI aircraft produced were of the Low-Altitude Fighter (LF) variety. This was not determined by the length of the wings (clipped wings were fitted to most LF Spitifres), but by the engine, which had been optimised for low-altitude operation. All production Mk XVIs had clipped wings for low altitude work and were fitted with the rear fuselage fuel tanks with a combined capacity of 75 gal. Many XVIs featured cut-down rear fuselages with "bubble" canopies. On these aircraft the rear fuselage tank capacity was limited to 66 gal.
Because of a slightly taller intercooler and rearranged accessories on the Packard Merlins a new, bulged upper cowling was introduced and also appeared on late production IXs.
Armament for most Mk XVIs consisted of 2 × 20 mm Hispano II cannon - each with 120 rpg - and 2 × .50 calibre Browning machine guns - each with 250 rpg. 1 × 500 lb (227 kg) bomb could be carried underneath the centre rack, and 1 × 250 lb (114 kg) bomb could be slung under each wing. Some production aircraft had rear fuselage fuel tanks in addition to the main tank which allowed it to fly approximately as far as the Spitfire Mk VIII. Problems with the licence-built engines limited introduction to front-line squadrons for several months. A total of 1,054 Mk XVIs were built by Castle Bromwich.

Messerschmitt ME. 262 B2 Turboprop (Flugzeug)

Here are some images of Trumpeter/Unicraft 1/32 scale Messerschmitt ME. 262 B2 Turboprop (Flugzeug).
As this type never made it past the drawing board stage, the markings of this aircraft are hypothetical.

From the instructions.
The Daimler-Benz DB.021 turboprop engines driving six-bladed propellers were designed by the end of World War II.
The main advantage of such a type was the small fuel consumption (compared to the turbojet engines of that time), hence the bigger flying endurance.
The ME. 262 project powered with the DB. 021 engines dates to February 1945.
The same power unit was also to be installed on the Arado Ar. 234 bomber (project 1944).
A lot more types could be fitted with the engine had the war lasted longer.

Viking Ship - 2

Here are some more images of Revell's 1/50 scale Viking Ship.


From Wikipedia"
Viking ships were vessels used during the Viking Age in Northern Europe. Scandinavian tradition of shipbuilding during the Viking Age was characterized by slender and flexible boats, with symmetrical ends with true keel. They were clinker built, which is the overlapping of planks riveted together. They might have had a dragon's head or other circular object protruding from the bow and stern, for design, although this is only inferred from historical sources.
They ranged in the Baltic Sea and far from the Scandinavian home areas, to Iceland, Greenland, Newfoundland, the Mediterranean, and Africa.
The ships are normally divided into classes based on size and function.
 In recent generations, the war ship has become the cultural icon of the Vikings. This trend is not particularly shocking, as the ship functioned as the centerpiece of Scandinavian culture for centuries. In fact, the importance of the Viking ship is deeply rooted in Scandinavian culture, as the vessel served both pragmatic and religious purposes. Scandinavia is a region with relatively high inland mountain ranges and easy access to coastal ports. Consequently, trade routes primarily operated via shipping, as inland trading was both hazardous and cumbersome. Viking kingdoms thus developed into coastal cities, all of which were deeply dependent on the North Sea for survival and development. Control of the waterways was then of critical importance, and consequently the most advanced war ships were in high demand. In fact, because of their overwhelming importance, ships became a mainstay of the Viking pagan religion, as they evolved into symbols of power and prowess. Throughout the first millennia, respectable Viking chieftains and noblemen were commonly buried with an intact, luxurious ship to transport them to the afterlife. Furthermore, the Hedeby coins, among the earliest known Danish currency, have ships as emblems, showing the importance of naval vessels in the area. Through such cultural and practical significance, the Viking ship progressed into the most powerful, advanced naval vessel in Viking Age Europe.

With such vast technological improvements, the Vikings began making increasingly more ocean voyages, as their ships were infinitely more sea worthy. In order to sail in ocean waters, the Vikings needed to develop methods of relatively precise navigation. Most commonly, a ship was piloted using ancestral knowledge. Essentially, the Vikings simply used prior familiarity with tides, sailing times, and landmarks in order to route courses. In fact, scholars contend that the mere position of a whale allowed the Vikings to determine their direction. Whales feed in highly nutritious waters, commonly found in regions where landmasses have pushed deep-water currents towards shallower areas. The sighting of a whale consequently functioned as a signal land was near. However, some academics also argue that the Vikings developed more tangible means of navigation. Many claim the Vikings used a sun compass to show their direction. A wooden half-disc found on the shores of Narsarsuaq, Greenland seems to initially lend credibility to this belief. However, upon investigation of the object, scholars found that the slits circumnavigating the disc are disproportionately spaced, casting severe doubts about its role as an accurate compass. Many now hold that the instrument is a “confession disc,” used by priests to count the number of confessions in their parish. In a similar sense, researchers and historians continually debate the use of sunstone in Viking navigation. Recent studies identify the sunstone, with its ability to polarize light, as a plausible method for determining direction. The sunstone effectively has the potential to show the positioning of the sun, even if obscured by clouds, by showing which direction light waves are oscillating. The stone will become a certain color based on the direction of the waves, but the process is only possible if the object is held in an area with direct sunlight. Thus, most scholars debate the reliability and the plausibility of using a navigational tool that can only determine direction in such limited conditions.
Viking sagas routinely tells of voyages where vikings suffer from being "hafvilla" (bewildered): voyages beset by fog or bad weather where they completely lost their sense of direction. This description suggests they did not use a sunstone to aid them when the sun was obscured. Also, they would experience hafvilla when the wind died, implying they relied on prevailing winds to navigate, further supporting the use of ancestral knowledge for piloting.
 ^{One Viking custom was to bury dead lords in their ships. The dead man’s body would be carefully prepared and dressed in his best clothes. After this preparation, the body would be transported to the burial-place in a wagon drawn by horses. The lord’s favorite horses and often, a faithful hunting-dog, were killed to be buried with the deceased man. The man would be placed on his ship, along with many of his most prized possessions. The Vikings firmly believed that the dead man would sail to the after-life in his ship, a belief similar to that of the ancient Egyptians.}

Roman Trireme - 2

Here are some more images of Zvezda's 1/72 scale Roman Trireme.
Normally I refuse to build plastic ship kits but this kit was so interesting I couldn't resist.
One thing I've noticed about this kit is the use of 19th century rigging and deck planking.
Oh well these ships are mostly conjecture anyway.

From Wikipedia"
A trireme (derived from Latin: "tres remi:" "three-oar;" Greek Τριήρης, literally "three-oarer") was an ancient vessel and a type of galley, a Hellenistic-era warship that was used by the ancient maritime civilizations of the Mediterranean, especially the Phoenicians, ancient Greeks and Romans.
The trireme derives its name from its three rows of oars on each side, manned with one man per oar. The early trireme was a development of the penteconter, an ancient warship with a single row of 25 oars on each side, and of the bireme (Greek: διήρης), a warship with two banks of oars, probably of Phoenician origin. As a ship it was fast and agile, and became the dominant warship in the Mediterranean from the 7th to the 4th centuries BC, when they were largely superseded by the larger quadriremes and quinqueremes. Triremes played a vital role in the Persian Wars, the creation of the Athenian maritime empire, and its downfall in the Peloponnesian War.
In English, no differentiation is made between the Greek triērēs and the Latin triremis. This is sometimes a source of confusion, as in other languages these terms refer to different styles of ships. Though the term today is used almost exclusively for ancient warships, modern historians also refer to medieval and early modern galleys with three banks of oars per side as triremes. The rowing arrangement of these differed considerably, though, since knowledge of the multi-level structure of the original triremes was lost some time during Late Antiquity.
The exact origin of the trireme is uncertain and debated, as our evidence comes from literary sources, depictions in reliefs and pottery fragments, which are open to misinterpretations. Depictions of two-tiered ships (biremes), with or without the parexeiresia (the outriggers, see below), are common in 8th century BC vases and pottery fragments, and it is at the end of that century that the first references to three-tiered ships are found. According to Thucydides, the trireme was introduced to Greece by the Corinthians in the late 8th century BC, and the Corinthian Ameinocles built four such ships for the Samians. Although this was interpreted by later writers, Pliny and Diodorus, to mean that triremes were invented in Corinth, it is likely that the earliest three-tiered warships originated in Phoenicia. Fragments from an 8th century relief at the Assyrian capital of Nineveh depicting the fleets of Tyre and Sidon have been interpreted as depicting two- and three-level warships, fitted with rams. The 2nd century Christian scholar Clement of Alexandria, drawing on earlier works, explicitly attributes the invention of the trireme (trikrotos naus, "three-tiered ship") to the Sidonians.
Based on all archeological evidence, the design of trireme surely pushed the technological limits of the ancient world. After gathering the proper timbers and materials it was time to consider the fundamentals of the trireme design. These fundamentals included accommodations, propulsion, weight and waterline, center of gravity and stability, strength, and feasibility. All of these variables are dependent on one another; however a certain area may be more important than another depending on the purpose of the ship.
The arrangement and number of oarsmen is the first deciding factor in the size of the ship. For a ship to travel at high speeds would require a high oar-gearing, which is the ratio between the outboard length of an oar and the inboard length; it is this arrangement of the oars which is unique and highly effective for the trireme. The ports would house the oarsmen with a minimal waste of space. There would be three files of oarsmen on each side tightly but workably packed by placing each man outboard of, and in height overlapping, the one below, provided that thalamian tholes were set inboard and their ports enlarged to allow oar movement. Thalamian is the English term for the Greek word, thalamios, which was the name of the oarsmen in the lowest file of the triereis; zygian is the English term for the Greek word, zygios, which were the oarsmen in the middle file of the triereis, and thranite is the English term for the Greek word, thranites, which were the oarsmen in the uppermost file of the triereis. Tholes were pins that acted as fulcrums to the oars that allowed them to move. The center of gravity of the ship is low because of the overlapping formation of the files that allow the ports to remain closer to the ships walls. A lower center of gravity would provide adequate stability.
The trireme was constructed to maximize all traits of the ship to the point where if any changes were made the design would be compromised. Speed was maximized to the point where any less weight would have resulted in considerable losses to the ship's integrity. The center of gravity was placed at the lowest possible position where the Thalamian tholes were just above the waterline which retained the ships resistance to waves and the possible rollover. If the center of gravity were placed any higher, the additional beams needed to restore stability would have resulted in the exclusion of the Thalamian tholes due to the reduced hull space. The purpose of the area just below the center of gravity and the waterline known as the hypozomata was to allow bending of the hull when faced with up to 90kN of force. The calculations of forces that could have been absorbed by the ship are arguable because there is not enough evidence to confirm the exact process of jointing used in ancient times. In a modern reconstruction of the ship, a polysulphide sealant was used to compare to the caulking that evidence suggests was used; however this is also argued because there is simply not enough evidence to authentically reproduce the triereis seams.
Triremes required a great deal of upkeep in order to stay afloat, as references to the replacement of ropes, sails, rudders, oars and masts in the middle of campaigns suggest. They also would become waterlogged if left in the sea for too long. In order to prevent this from happening, ships would have to be pulled from the water during the night. The use of lightwoods meant that the ship could be carried ashore by as few as 140 men. Beaching the ships at night however, would leave the troops vulnerable to surprise attacks. While well-maintained triremes would last up to 25 years, during the Peloponnesian War, Athens had to build nearly 20 triremes a year to maintain their fleet of 300.
The Athenian trireme had two great cables of about 47 mm in diameter and twice the ship's length called hypozomata (undergirding), and carried two spares. They were possibly rigged fore and aft from end to end along the middle line of the hull just under the main beams and tensioned to 13.5 tonnes force. The hypozomata were considered important and secret: their export from Athens was a capital offence. This cable would act as a stretched tendon straight down the middle of the hull, and would have prevented hogging. Additionally, hull plank butts would remain in compression in all but the most severe sea conditions, reducing working of joints and consequent leakage. The hypozomata would also have significantly braced the structure of the trireme against the stresses of ramming, giving it an important advantage in combat.
 

Supermarine Spitfire MK IX C

Here are some more images of Tamiya's 1/32 scale Supermarine Spitfire MK IX C. This is the aircraft that was flown by wing commander J.E."Johnnie" Johnson for Kenley Wing "The Canadians" at RAF Kenley 1943.

From Wikipedia"
n the early months of 1942, with the clear superiority of the Focke Wulf Fw 190 over the Spitfire VB, there was much pressure to get Spitfires into production using the new two-stage supercharged Merlin 61 engine. In September 1941 the Spitfire Mk III prototype N3297 had been converted by Rolls-Royce at their Hucknall plant to take a Merlin 60, which had been specifically designed for use in the Wellington Mk VI high altitude bomber.
The performance increase was described as a "quantum leap" over that of the Mk VB and another Spitfire airframe, R6700 was modified to take the new engine. Although design work on the Mk VII and VIII series was under way, these would take over a year to get into production and a counter to the Fw 190 was urgently needed. The Air Ministry made the decision that Mk VC airframes should be converted to take the more powerful engine and, as a result, many of the early IXs were converted Mk VCs which did not have any of the refinements which later appeared. These could be identified by the Type C wing with the large double blisters over the inner cannon bays and the identification light on the fuselage spine, behind the aerial mast. The elevator horns were also smaller in size than that of most Mk IXs which had larger horn balances. The first IX was a modified VC AB505, which was tested by the Air Fighting Development Unit (AFDU) in April 1942. The report said;

The performance of the Spitfire IX is outstandingly better than the Spitfire V especially at heights above 20,000 feet. On the level the Spitfire is considerably faster and climb is exceptionally good. It will climb easily to 38,000 feet and when levelled off there can be made to climb in stages to above 40,000 feet by building up speed on the level and a slight zoom. Its manoeuvrability is as good as a Spitfire V up to 30,000 feet and above is very much better. At 38,000 feet it is capable of a true speed of 368mph and is still able to manoeuvre well for fighting.

Although the Mk IX's airframe did not have the aerodynamic and strength improvements, or the modified control surfaces of the Mk VII and VIII, the Mk IX still proved to be an effective counter to the Focke Wulf Fw 190.

In September 1942, the "High Altitude Flight" was set up at RAF Northolt to counter the threat of the high altitude Junkers Ju 86 R bombers. Two Spitfire IXs converted from VCs were stripped of armour, the .303 Brownings and other equipment and repainted in a lightweight PRU blue finish. One of them intercepted a Ju 86R at over 40,000 feet (12,000 m).
Production of the Mk IX finished at Supermarine in June 1943, with production continuing exclusively at the Castle Bromwich factory. Several major and large numbers of minor improvements were progressively introduced to Mk IXs, some of which were used on other Spitfire variants.
The Merlin 61 was phased out early in 1943 in favour of the Merlin 63 and 63A. The new engine had increased power resulting from engine improvements and engine limitations of +18 lbs./sq.in and 3,000 rpm (5 minute combat). During the second half of 1943, production of the Merlin 63 powered F Mk IX was discontinued in favour of the Merlin 66 powered LF Mk IX. Early production Spitfire IXs suffered from vapour locks in the fuel lines resulting from fuel evaporating if the aircraft was parked in direct sunlight. As a result of this the gun-camera was moved from the port wingroot to the starboard wingroot and a fuel cooler, fed by a small round air-intake was fitted in its place. This fuel cooler was also fitted to early PR Mk XIs
Production of the LF Mk IXs, frequently referred to as the Spitfire IXB, initially ran in parallel with the Merlin 63 powered Marks. This version first became operational in March 1943 with the Biggin Hill Wing, comprised at the time of 611 and 341(Free French) Squadrons. This type was by far the most produced of the Spitfire IX variants, with over 4000 built. The maximum power of the Merlin 66 was 1,720 hp (1,280 kW) at 5,750 ft (1,283 kW at 1,752 m) and the maximum speed of the Spitfire LF IX was 404 mph (650 km/h) at 21,000 feet (6,400 m). The Merlin 66 introduced a new Bendix-Stromberg injection carburettor, which replaced the earlier S.U float carburettor.
The H.F IX was powered by the specialised high altitude Merlin 70 and entered service in the Spring of 1944. Serial listings show that the HF Mk IX was produced in relatively limited numbers when they were required, with priority being given to versions rated for low and medium altitudes Maximum power of the Merlin 70 was 1,710 hp (1,280 kW) at 11,000 ft (1,275 kW at 3,353 m): maximum speed of the Spitfire HF.IX was 405 mph (652 km/h) at 25,400 feet (7,700 m) at an all-up weight of 7,320 lbs (3,320 kg).
Also introduced in early 1944 was a new Mark II Gyro gunsight. This gunsight calculated the correct angle of deflection to use when leading the target. Its introduction doubled the effectiveness of RAF gunnery and was a major factor in Allied air superiority.
The capacity of the main fuel tanks was 48 gal for the upper tank and 37 gal for the lower, for a total internal capacity of 85 gal. Jettisonable "slipper tanks" of 30, 45 or 90 gal could be carried under the centre-section. As an alternative a cylindrical 50 gal drop tank, adapted from those carried by long range Hawker Typhoons, could be carried on the fuselage bomb rack used on most Mk IXs of the Second Tactical Air Force. To further increase the combat radius some late production Mk IXs were fitted with additional internal self-sealing fuel tanks in the rear fuselage: the upper tank carried 41 gal and the lower 34 gal. When both were full this enabled a ferry range of over 1,200 miles (1,900 km), although they made the aircraft unstable in flight and only straight flight and gentle manoeuvres at low altitudes were recommended by the pilot's manual. The pilot was also warned to avoid instrument flying whenever possible.
Late production Mk IXs, in common with Mk XVIs introduced a new upper engine cowling which incorporated a distinct bulged top surface; this design was adopted for the Mk XVI to allow for the modified intercooler of the Packard Merlin 266, which had an integral header tank.
The cut-down rear fuselage and bubble canopy, trialled on a Spitfire Mk VIII, was incorporated into very late production Mk IXs. With the cut down fuselage the lower forward fuselage tank capacity was increased to 47 gallons, while the rear fuel tanks were decreased to a capacity of 66 gallons.These were the rarest of the Mk IXs and many of them featured the "clipped" wings. The great majority of these saw postwar service with the SAAF, both in South Africa and in deployment in Korea during the 1950s.
During early 1945, some Spitfire IXEs and XVIEs of 74 Squadron were fitted with a single RP-3 rocket under each wing. This was believed to be the only RAF Spitfire unit to use rockets operationally during the Second World War.

Northrop P-61 B Black Widow

Here are some images of the Hobby Boss 1/32 scale Northrop P-61 B Black Widow.

From Wikipedia"
The Northrop P-61 Black Widow, named for the American spider, was the first operational U.S. military aircraft designed specifically for night interception of opposing aircraft, and was the first aircraft specifically designed to use radar. It was an all-metal, twin-engine, twin-boom design developed during World War II. The first test flight was made on 26 May 1942, with the first production aircraft rolling off the assembly line in October 1943. The last aircraft was retired from government service in 1954.
Although not produced in the large numbers of its contemporaries, the Black Widow was effectively operated as a night-fighter by United States Army Air Forces squadrons in the European Theater, the Pacific Theater, the China Burma India Theater and the Mediterranean Theater during World War II. It replaced earlier British-designed night-fighter aircraft that had been updated to incorporate radar when it became available. After the war, the P-61 served in the United States Air Force as a long-range, all weather, day/night interceptor for Air Defense Command until 1948, and Fifth Air Force until 1950.
On the night of 14 August 1945, a P-61B of the 548th Night Fight Squadron named "Lady in the Dark" was unofficially credited with the last Allied air victory before VJ Day. The P-61 was also modified to create the F-15 Reporter photo-reconnaissance aircraft for the United States Air Force.
In March 1941, the Army/Navy Standardization Committee decided to standardize use of updraft carburetors across all U.S. military branches. The XP-61, designed with downdraft carburetors, faced an estimated minimum two-month redesign of the engine nacelle to bring the design into compliance. The committee later reversed the updraft carburetor standardization decision (the XP-61 program's predicament likely having little influence), preventing a potential setback in the XP-61's development.
The Air Corps Mockup Board met at Northrop on 2 April 1941, to inspect the XP-61 mock-up. They recommended several changes following this review. Most prominently, the four 20 mm (.79 in) M2 cannons were relocated from the outer wings to the belly of the aircraft, clustered tightly just behind the rear of the nose gear well. The closely spaced, centered installation, with two cannons stacked vertically, slightly outboard of the aircraft's centerline on each side, and the top cannon in each pair only a few inches farther outboard, eliminated the inherent drawbacks of the convergence of wing-mounted guns. Without convergence, aiming was considerably easier and faster, and the tightly grouped cannons created a thick stream of 20 mm (.79 in) projectiles. The removal of the guns and ammunition from the wings also cleaned up the wings' airfoil and increased internal fuel capacity from 540 gal (2,044 l) to 646 gal (2,445 l).
Other changes included the provision for external fuel carriage in drop tanks, flame arrestors/dampers on engine exhausts, and redistribution of some radio equipment. While all beneficial from a performance standpoint—especially the movement of the cannons—the modifications required over a month of redesign work, and the XP-61 was already behind schedule.
In mid-1941, the dorsal turret mount finally proved too difficult to install in the aircraft, and was changed from the General Electric ring mount to a pedestal mount like that used for the upper turrets in Boeing B-17 Flying Fortresss, Consolidated B-24 Liberators, North American B-25 Mitchells, Douglas A-20s and other bombers. Following this modification, the turret itself became unavailable, as operational aircraft, in this case the Boeing B-29 Superfortress, were ahead of experimental aircraft in line for the high-demand component. For flight testing, engineers used a dummy turret.
During February 1942, subcontracting manufacturer Curtiss notified Northrop that the C5424-A10 four-bladed, automatic, full-feathering propeller Northrop had planned for use in the XP-61 would not be ready for the prototype rollout or the beginning of flight tests. Hamilton Standard propellers were used in lieu of the Curtiss props until the originally planned component became available.
The XP-61's weight rose during construction of the prototype, to 22,392 lb (10,157 kg) empty and 29,673 lb (13,459 kg) at takeoff. Engines were R-2800-25S Double Wasp radials; turning 12 ft 2 in diameter Curtiss C5425-A10 four-blade propellers, both rotating counterclockwise when viewed from the front. Radios included two command radios, SCR-522As, and three other radio sets, the SCR-695A, AN/APG-1, and AN/APG-2. Central fire control for the gun turret was similar to that used on the B-29, the General Electric GE2CFR12A3.

Four P-61s are known to survive today.

• P-61B-1NO c/n 964 AAF Ser. No. 42-39445, is under restoration to flying status by the Mid-Atlantic Air Museum in Reading, Pennsylvania. The aircraft crashed on 10 January 1945 on Mount Victoria, Papua New Guinea, was recovered in 1989 by the Mid-Atlantic Air Museum of Reading, Pennsylvania. The aircraft has been undergoing a slow restoration since then with the intention of eventually returning it to flying condition, with the civilian registration N550NF. When finished, it is expected to be over 70% new construction. As of May 2011, 80% of the restoration has been completed, with only the installation of the wings and engines remaining.

• P-61B-15NO c/n 1234 AAF Ser. No. 42-39715 was on outside display at the Beijing University of Aeronautics and Astronautics in China. The official story is that one of the P-61s that were based in Sichuan Province during the war was turned over to the Chendu Institute of Aeronautical Engineering in 1947. When the Institute moved to its present location, it did not take this aircraft with them, instead shipping it to the Beijing Institute of Aeronautical Engineering in 1954. However, as both USAAF night fighter squadrons (426th, 427th) that served in China were inactivated in 1945, this may not be accurate. An alternative explanation is that at the end of hostilities in 1945, the 427th was in the process of bringing their various detachments back to a central airfield for disposition of the aircraft and to start processing home. At one of the satellite airfields, two of the three P-61s were in need of maintenance. Reportedly, Chinese communist troops came onto the field and ordered the Americans to leave without their aircraft. This aircraft is in very poor condition and probably near the point of structural collapse. The Chinese claim to have two additional P-61s in storage which they have offered for sale for $2,000,000. Sometime in 2008-2009, the museum’s display aircraft were moved to a parking lot approximately 200 metres south and the museum closed. The outer wing sections of P-61B-15NO c/n 1234 were removed and stored at the parking lot like several other aircraft. It was confirmed in September 2012 that P-61B-15NO c/n 1234 is no longer at the parking lot. By April 2013 the P-61 had been reassembled and repainted in a new building with other aircraft that were previously outside. The Air and Science Museum is across the street from the New Main Building (North Side of building).

• P-61C-1NO c/n 1376 AF Ser. No. 43-8330, is on display at the National Air and Space Museum in Washington D.C.. The aircraft was delivered to the Army on 28 July 1945. By 18 October, this P-61 was flying at Ladd Field, in Alaska conducting cold weather tests, where it remained until 30 March 1946. The airplane was later moved to Pinecastle AAF in Florida for participation in the National Thunderstorm Project. Pinecastle AAF personnel removed the guns and turret from 43-8330 in July 1946 to make room for new equipment. In September the aircraft moved to Clinton County Army Air Base in Ohio, where it remained until January 1948. The Air Force then reassigned the aircraft to the Flight Test Division at Wright-Patterson Air Force Base in Dayton, Ohio. After being declared surplus in 1950 it was donated by the U.S. Air Force to the National Air Museum in Washington, D.C. (it became the National Air and Space Museum in 1966).

On 3 October 1950, the P-61C was transferred to Park Ridge, Illinois where it was stored along with other important aircraft destined for eventual display at the museum. The aircraft was moved temporarily to the museum's storage facility at Chicago's O'Hare International Airport, but before the museum could arrange to ferry the aircraft to Washington, D.C. the National Advisory Committee for Aeronautics asked to borrow it. In a letter to museum director Paul E. Garber dated 30 November 1950, NACA director for research I.H. Abbott described his agency's "urgent" need for the P-61 to use as a high-altitude research craft. Garber agreed to an indefinite loan of the aircraft, and the Black Widow arrived at the Ames Aeronautical Laboratory, at Naval Air Station Moffett Field in California, on 14 February 1951. When NACA returned the aircraft to the Smithsonian in 1954 it had accumulated only 530 total flight hours. From 1951 to 1954 the Black Widow was flown on roughly 50 flights as a mothership, dropping recoverable swept-wing test bodies as part of a National Advisory Committee for Aeronautics program to test swept-wing aerodynamics. NACA test pilot Donovan Heinle made the aircraft's last flight when he ferried it from Moffett Field to Andrews Air Force Base, arriving on 10 August 1954. The aircraft was stored there for seven years before Smithsonian personnel trucked it to the museum's Garber storage facility in Suitland, Maryland. In January 2006 the P-61C was moved into Building 10 so that Garber's 19 restoration specialists, three conservationists and three shop volunteers could work exclusively on the aircraft for its unveiling at the Steven F. Udvar-Hazy Center on 8 June. The aircraft was restored to its configuration as a flight test aircraft for swept-wing aeronautics, so the armament and turret were not replaced. A group of former P-61 air crews were present at the aircraft's unveiling, including former Northrop test pilot John Myers.

• P-61C-1NO c/n 1399 AAF Ser. No. 43-8353 is currently on display at the National Museum of the United States Air Force at Wright-Patterson AFB in Dayton, Ohio. It is marked as P-61B-1NO 42-39468 and painted to represent "Moonlight Serenade" of the 550th Night Fighter Squadron. The aircraft was presented to the Boy Scouts of America following World War II and kept at Grimes Field in Urbana, Ohio. On June 20, 1958 it was returned to the museum by the Tecumseh Chapter of the Boy Scouts of America in Springfield, Ohio. The aircraft recently had a reproduction turret installed, which was fabricated by the Museum's restoration team.