Fighter, Projects

Heinkel He P.1078A (Frank Airmodel, Resin)

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TYPE: Interceptor. Project

ACCOMMODATION: Pilot only

POWER PLANT: One Heinkel/Hirth HeS 011 turbojet engine, rated at 1,300 kp

PERFORMANCE: 609 mph

COMMENT: As part of the “Emergency Fighter Program” (”Jägernotprogramm”), at the beginning of 1945 a program was launched by the OKL (Oberkommando der Luftwaffe, High Command of the Luftwaffe) for a new generation of fighter/interceptor aircraft in order to replace the winner of the “Volksjäger” fighter design competition, the Heinkel He 162A “Spatz” (“Sparrow”) . The new aircraft was intended to have superior performance in order to deal with high altitude threats such as the the Boeing B-29 “Superfortress”, but only had a 30-minute endurance figure.
Heinkel produced three different designs of the project (He P. 1078A, He P. 1078B, and He P. 1078C) which were submitted in February 1945. The high-altitude fighter designs brought forward by other German aircraft makers were the Messerschmitt Me P. 1110, Focke-Wulf Ta 183 “Huckebein”, Blohm & Voss Bv P.212 and Junkers EF 128, the official winner of the competition. After being subject to severe criticism, the project was cancelled by Heinkel at the end of February 1945. Other reports state that these Heinkel projects have never been submitted to the OKL. In fact, members of the Heinkel construction bureau were working on these designs under U.S. supervision after WW II during the summer of 1945 (Ref.: 24).

Reconnaissance

Yokosuka R2Y1 “Keiun” (“Beautiful Cloud”), (Wings Models, Vacu-formed)

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TYPE: Long-range reconnaissance aircraft

ACCOMMODATION: Pilot and radio operator/navigator

POWER PLANT: One Aichi Ha-70 (twin-coupled Aichi “Atsuta 30s”) twenty-four cylinder liquid-cooled engine, rated at 3,400 hp

PERFORMANCE: 447 mph at 32,810 ft

COMMENT: In 1942 the Japanese Navy initiated the development of a new class of aircraft to fulfil the role as long-range high-speed land-based reconnaissance aircraft. The first projected aircraft was planned around the new 2,500 hp twenty-four cylinder, liquid-cooled engine then under development by Mitsubishi. But in 1943, inspired by evaluation of the Heinkel He 119 V4 acquired from Germany that was powered by two coupled engines buried in the fuselage behind the cockpit the design was changed again. Now the Aichi Ha-70 twin-coupled “Atsuta “30 was installed in the fuselage driving a single six-bladed tractor propeller via an extension shaft. Completed in April 1945 the prototype made its first flight on 8 May 1945. Unfortunately, this flight had to be cut short because of an abnormal rise in oil temperature, while a few days later an engine fire on the ground necessitated a complete engine change. Before this could be done, the R2Y1 was destroyed by American bombs. At the end of the war a second R2Y1 prototype was under construction and the design of a turbojet engine-powered fast attack bomber R2Y2 had almost been completed (Ref. 1).

Fighter, Fighterbomber

Grumman XF5F-1 “Skyrocket” (Resin)

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TYPE: Carrier-borne twin-engine fighter

ACCOMMODATION: Pilot only

POWER PLANT: Two Wright XR-1820-40/41 “Cyclone” radial engines, rated at 1,200 hp each

PERFORMANCE: 380 mph at 16,500 ft

COMMENT: In 1938 Grumman presented a proposal to the U. S. Navy for a twin engine carrier based aircraft, unlike any other fighter aircraft that had ever been considered. The design was for a light weight fighter powered by two 1,200 hp Wright R-1820 engines, with propellers geared to rotate in opposite directions to cancel out the effects of each engine’s torque, promising high-speed, and an outstanding rate of climb. Designated XF5F-1 “Skyrocket” it was a low wing monoplane with a short fuselage that began aft of the wing’s leading edge with a twin tail assembly that featured a pronounced dihedral to the horizontal stabilizer. The main landing gear and tail wheel were fully retractable. The aircraft flew for the first time on 1 April 1940.  Engine cooling problems arose in the initial flights, resulting in modification to the oil cooling ducts. Further modifications were made to the prototype including reduction in the height of the cockpit canopy, redesign of the engine nacelles, and extending the fuselage forward of the wing. Flight tests indicated good flying qualities for the XF5F-1. The counter-rotating props were a nice feature, virtually eliminating the torque effect on take-off the single-engine performance was good, rudder forces tended to be high in single engine configuration. Nevertheless, additional changes were needed after further flight tests that were not completed until 15 January 1942. In the meantime, Grumman began work on a more advanced twin-engine shipboard fighter, the XF7F-1 “Tigercat”, and further testing with the XF5F-1 supported the development of the newer design. The prototype continued to be used in various tests, although plagued by various landing gear problems, until it was struck from the list of active aircraft after it made a belly landing on 11 December 1944.
A land-based development of the Grumman XF5F-1 “Skyrocket” was the Grumman XP-50 “Skyrocket”. It entered into a USAAC contest for a twin-engine heavy interceptor aircraft. A prototype was ordered on November, but the aircraft lost the competition to the Lockheed XP-49 (Ref.: 24).

Fighter, Fighterbomber

Henschel Hs 132A V1 (A+V Models, Resin)

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TYPE: Dive-bomber and interceptor

ACCOMMODATION: Pilot in prone position

POWER PLANT:  One BMW 003A turbojet engine, rated at 800 kp

PERFORMANCE: 485 mph at 19,685 ft

COMMENT: Early in 1943, the RLM issued a specification for a single-seat attack aircraft to combat the anticipated Allied invasion in Europe. Although the specification called for a piston-engine powered dive bomber it was soon realized that only a turbojet-driven aircraft could hope to match the proposed performance requirements. The Henschel Company submitted a design which was approved as Henschel Hs 132 and placed accent of simplicity and ease to manufacture. The wing was a wooden structure with plywood skinning, and the fuselage was a circular metal monocoque. The single turbojet was mounted above the fuselage, exhausting over the rear fuselage and between the twin vertical surfaces of the tail assembly. A tricycle landing gear was to be used and the extensively glazed cockpit was completely faired with the fuselage. The pilot was in prone position better to withstand the high G-forces of the fast and steep dive during the bomb run. It was estimated that during the dive a speed of more than 570 mph could be reached and after the bomb was released the aircraft was pulled up thus inducing acceleration forces of up to 10 G. A contract for six prototypes was placed in May 1944, and construction began in March 1945. When the war in Europe ended the Henschel Hs 132 V1 was nearly complete and captured by Soviet forces

NOTICE: To ascertain the practicability of the prone position for dive bomber pilots, the DLV ordered in early 1943 a small prone-pilot research aircraft that was designed and built by the FFG Berlin (Flugtechnische Fachgruppe/Aerotechnical Group, University Berlin) and designated Berlin B9. The design was a low winged, twin-engine aircraft of standard layout. It was built of mixed construction and could accept up to 22 G. It was flown by many experienced pilots and showed the advantages of a prone position for pilots to tolerate high g-forces.  (Ref.: 17).

Heavy Bomber, Reconnaissance

Tachikawa Ki-74 (“Patsy”) (A+V Models, Resin)

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TYPE: Long-range reconnaissance bomber

ACCOMMODATION: Crew of five

POWER PLANT:  Two Mitsubishi Ha-211-I Ru turbo-supercharged air-cooled radial engines, rated at 2,200 hp each

PERFORMANCE:  354 mph at 27,890 ft

COMMENT: The Tachikawa Ki-74 was a Japanese experimental long-range reconnaissance bomber of WW II. A twin-engine, mid-wing monoplane, it was developed for the Imperial Japanese Army Air Force. Though already conceived in 1939 as a long-range reconnaissance aircraft, the prototype Ki-74 (designated as A-26 by Tachikawa) only first flew as late as in March 1944. It was powered by two 2,201 hp Mitsubishi Ha-211 (Ha-43-I) radial engines. The following two prototypes were powered by the turbo-supercharged Mitsubishi Ha-21-I Ru (Ha-43-II) engines, but as these experienced teething troubles, the following thirteen pre-production machines substituted the Ha-211 Ru engine for the lower-powered, but more reliable, turbo-supercharged Mitsubishi Ha-104 Ru air-cooled engines, rated at 1,900 hp. The forth pre-production aircraft was modified in 1944 to undertake non-stop flights between Japan and Germany, but the “Third Reich” capitulated before the first of these flights could be made. In total 16 aircrafts have been built, but did not see operational service. Plans were made to use the Ki-74 in bombing attacks against the B-29 bases on Saipan, as soon as sufficient aircraft were available, but the Japanese surrender terminated the project. Nevertheless, the Allies knew of its existence and assigned the type the codename “Patsy” after it was discovered that it was a bomber, not a fighter. Previously it had the code name “Pat” in Allied Intelligence (Ref.: 1, 24).

Fighter-Torpedobomber, Reconnaissance

De Havilland “Mosquito” F-8, 25th BG(R) -802 RG(P) (Matchbox)

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TYPE: Photo-reconnaissance aircraft

ACCOMMODATION: Pilot and radio-operator/navigator

POWER PLANT: Two Packard “Merlin” 31 or 33 liquid-cooled engines, rated at 1,460 hp each

PERFORMANCE: 408 mph at 28,000 ft

COMMENT: Until the end of WW II the de Havilland Company Canada rolled out 1,133 “Mosquito” aircraft of different subtypes.  The “Mosquito” B Mk XX was the Canadian version of the “Mosquito” B. Mk. IV bomber aircraft of which 145 were built. From these 40 were converted into F-8 photo-reconnaissance aircraft for the USAAF and used with the 8th USAAF in the European Theatre of Action. It had the same Packard “Merlin” engines and was equipped with three overload fuel tanks, totaling 3,500 L in the bomb bay. Additionally, for range extension it could also carry two 230 L or 450 L drop tanks.
The de Havilland “Mosquito” of 25th BG(R) -802 RG(P) were painted in normal RAF P.R. Blue finish. In August 1944 the vertical tail was colored in red and in September 1944 all tail surfaces were painted red. This marking was necessitated by frequency of misidentification of “Mosquito” as enemy type. Similar marking were used on Boeing B-17G of 652 BS.
The 25th Bombardment Group (Reconnaissance) was constituted in the days after D-Day and activated in England in August 1944 to carry out photographic and mapping missions over mainland Europe as the Allied armies pushed east. The Group were designated a Bombardment Group but they did not drop bombs. Instead they flew bombers to drop ‘chaff’ screenings for other Bomb Groups. ‘Chaff’, strips of metallic paper, would interfere with the enemy’s ability to detect aircraft using radar (Ref.: 24).

Fighter

Messerschmitt Me 309 V1 (Huma)

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TYPE: Short- and medium-range interceptor

ACCOMMODATION: Pilot only

POWER PLANT: One Daimler-Benz DB 603A-1 liquid-cooled engine, rated at 1,750 mph

PERFORMANCE: 496 mph at 26,200 ft

COMMENT: During 1941 the Messerschmitt design bureau began work on a new fighter intended to succeed the Messerschmitt Me 109. Designated Me 309, the new fighter employed a nose-wheel undercarriage. The first prototype Me 309 V1 began taxi-ing trials on June 1942 and the first test flight was not attempted until July 1942. Subsequent flight tests revealed some instability, and the prototype was grounded for several modifications.
Despite continual modifications, the characteristics of the fighter were still not entirely satisfactory. On November 1942 a flight comparison between the Me 309 V1 and a standard Me 109G revealed the fact that the older fighter could turn-out its potential successor. In the meantime three further prototypes were ready for test flights but the results showed that numerous modifications were necessary. During summer 1943, however, the complete program was abandoned owing to the superior qualities of the Focke-Wulf Fw 190D and Focke-Wulf Ta 152.
Prior to the termination of the program several variants of the basic design were proposed including different engines as Daimler-Benz DB 603H and Junkers Jumo 213. Another development, the Messerschmitt Me 609, with two Me 309 fuselages joined by a constant center wing, was not proceeded with (Ref.: 11).

Medium Bomber

Mitsubishi Ki-67-I KAI ‘Hiryu’ (“Flying Dragon”), To-Gō , (Special Attack), (LS-Models and scratch parts)

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TYPE: Suicide attack aircraft

ACCOMMODATION: Crew of three

POWER PLANT: Two Mitsubishi Ha-104 radial engines, rated at 1,900 hp each

PERFORMANCE: 334 mph at 19,980 ft

COMMENT: The desperate situation of Japan in the last stages of World War II led the authorities of both the Japanese IAAF as well as INAF to unorthodox proposals. Not only ageing but also brand new aircraft were used for suicide (kamikaze) missions, So Mitsubishi proposed a special attack version of its Mitsubishi Ki-67 “Hiryu”(“Flying Dragon”, Allied code “Peggy”) bomber. As Ki-67 KAI or Sakura-dan models the aircraft were modified by Tachikawa Dai-Ichi Rikugun Kokusho for this new role. All turrets were removed and faired over and the crew reduced to three. A long rod projecting from the nose should trigger to explode on impact either two standard 800 kg bombs or a special charge of explosives weighting 2,900 kg. Only one aircraft was ready when Japan surrendered (Ref.: 1).

Medium Bomber, Torpedobomber, Reconnaissance

Blackburn B.20 (Unicraft, Resin)

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TYPE: Medium-range Maritime Reconnaissance Flying Boat

ACCOMMODATION: Crew of six

POWER PLANT: Two Rolls-Royce “Vulture” liquid-cooled engines, rated at 1,830 hp each

PERFORMANCE: 306 mph at 15.000 ft

COMMENT: One of the most interesting flying boats to be built and flown during the war years  was the Blackburn B.20 medium-range reconnaissance aircraft. The B.20 represented an attempt to reconcile the conflicting requirements for angles of incidence and correct streamlining between the conditions of take-off and level flight, and simultaneously provide adequate clearance between airscrews and water. The novel feature of the B.20 was the use of a retractable planning bottom. The pontoon was attached to the main hull by means of links so designed that when the pontoon was extended the hull and wings automatically assumed the best attitude for take-off. When the pontoon was retracted it presented a good streamline form with the main hull. The B.20 was first flown early in 1940 and a number of flights were made, the aircraft performing well both on the water and in the air, and the retractable pontoon operating successfully. Unfortunately, the B.20 was lost during a test flight and further development of the flying boat was abandoned in favor of the Saro “Lerwick”. However, during the war design work on a flying-boat fighter Blackburn B.44 employed the retractable pontoon principle, but this project never left the drawing-board (Ref.: 14).

Fighter

Messerschmitt Me 209H V1 (Planet Models, Resin)

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TYPE: High-altitude fighter

ACCOMMODATION: Pilot only

POWER PLANT: One Daimler-Benz DB 627B liquid-cooled engine, rated at 2,000 hp

PERFORMANCE: 460 mph at full boost altitude

COMMENT:  In April 1943 the Messerschmitt design bureau submitted proposals for a high-altitude fighter designated Messerschmitt Me 209H. This project envisaged the insertion of an additional rectangular center section in the wing to increase overall span and gross area, and the use of either Daimler-Benz DB 628A high altitude engine or the DB 603U which was a DB 603E equipped with a TKL 15 turbo-supercharger. Owing to the time element Messerschmitt was instructed to embody some of its proposals for the Me 209H into the Me 109H which, making extensive use of Me 109G components, offered a quicker solution to the requirement for a fighter of superior altitude capability.
Nevertheless, the Messerschmitt bureau persisted with the development of the Me 209H, detail design being completed on October 1943, and work on the prototype, the Me 209H V1, began shortly afterwards, but proceeded slowly, and was delayed as a result of an air attack in February 1944 in which the partly assembled prototype was damaged, and some of its components destroyed. Thus, the Me 209H V1 was not rolled out until June 1944, by which time the entire Me 209 program had been officially abandoned. It had been intended that the Me 209H V1 should receive the Daimler-Benz DB 627 which was basically a DB 603 G with aftercooler and two-stage mechanical supercharger, and afforded 2,000 hp for take-off. The engine drove a four-bladed wooden airscrew and the annular radiator was discarded in favor of radiators in the leading edge of the wing center section. No records exists of the results of flight testing or the ultimate fate of the sole Me 209 high-altitude prototype (Ref.: 7).