POWER PLANT: Two Junkers Jumo 004C turbojet engines, rated at 980 kp each and one Walter HWK 509S-2 liquid-fueled rocket engine, rated at 1,700 kp
PERFORMANCE: 510 mph at 32,800 ft
COMMENT: The major disadvantage displayed by the ‘Heimatschützer I’ had been the strict limitation imposed on J2 tankage (for the Jumo 004 turbojet engines) by the internally mounted rocket motor, and the need to use some of the available tankage for its propellants. The Messerschmitt Me 262C-3a ‘Heimatschützer IV’, therefore, had a Walter R II-211/§ rocket motor slung beneath the fuselage with ‘C-Stoff’ and ‘T-Stoff’ tanks mounted on modified bomb carriers immediately ahead of the power plant. The rocket motor was jettisonable, and was to be dropped by parachute after the fuel had been consumed. Fuel was fed to the power plant by means of a flexible line, but difficulties were encountered with the fuel feed as a level of tanks was slightly below that of rocket combustion chamber, and these had not been resolved when further work on the Messerschmitt Me 262C-3a ‘Heimatschützer IV’ terminated.
Another ‘Heimatschützer’, the Messerschmitt Me 262C-3 ‘Heimatschützer III’ was a proposed version of the basic Me 262A-1a with Junkers Jumo 004 turbojet engines replaced with Walter HWK RII-211 liquid-fueled rocket engines (Ref.: 7).
POWER PLANT: One Walter HKW 509A-1 liquid-fueled rocket, rated at 1,600 kp
PERFORMANCE: 435 mph
COMMENT: In 1944, according to the RLM’s ‘Miniaturjägerprogramm’ (Miniature fighter program) the Messerschmitt Me P.1103/III was designed as a small, cheap, easy to build, short-range, high speed interceptor fighter. Competitors were Focke-Wulf Fw ‘Volksjäger’, Junkers EF 126 ‘Lilli’, Junkers EF 127 ’Walli’ and Bachem Ba 349 ‘Natter’. Construction was to be simple, the airframe mainly built from wood. The wings were mid-mounted and un-swept so as the tail-plane. For take-off the fighter set on a simple pair of wheels and a front skid. Both were jettisoned when the aircraft was airborne. The tiny plane was towed by a Messerschmitt Me 109G or Messerschmitt Me 262A-1 towards the enemy, released when in right position and ignited the rocket motor. After attack the aircraft glided back to its base and landed on retractable skids. All design work was cancelled in favour of the Bachem Ba 349 ‘Natter’ (Ref.: 17).
POWER PLANT: Two BMW 003R units, each of which comprised a BMW 003A turbojet engine, rated 800 kp and a BMW 718 bi-fuel rocket motor rated at 1.230 kp
PERFORMANCE: 510 mph at 32,800 ft
COMMENT: The second rocket-boosted development, the Messerschmitt Me 262C-2b ‘Heimatschützer II’ (‘Home Protector II’), also converted from a Messerschmitt Me 262A-1a, made its sole test flight in March 1945. The Me 262C-2b was powered by two BMW 003R units each of which comprised a BMW 003A turbojet and a BMW 718 liquid-fuel rocket motor. The arrangement of the fuel tanks was similar to that of the Messerschmitt Me 262C-1a except that “S-Stoff’ occupied the forward main tank and ‘R-Stoff’ was housed by the aft auxiliary tank. The BMW 718 rocket motor was highly temperamental, and although some 50 bench runs were made with the complete BMW 003R unit, on several occasions the rocket component blew up and burned fiercely. Only one flight with the sole Messerschmitt Me 262C-2a ‘Heimatschützer II’ under full power was made. Further work concentrated on the Messerschmitt Me 262C-3b ‘Heimatschützer IV’. However, the aircraft shown here could be attached to the ISS 1 (Industrie Schutz Staffel 1 (Industry Protection Squadron) —- assumed of serial production (Ref.: 7).
POWER PLANT: Two Junkers Jumo 004C-1 turbojet engines, rated at 980 kp and one Walter HWK 509A-1 liquid-fueled rocket engine, rated at 1,600 kp
PERFORMANCE: 535 mph at 26,250 ft
COMMENT: Early in 1945, considerable importance was attached to the rapid development of rocket-boosted ‘Heimatschützer’ (‘Home Protector’) versions of the Messerschmitt Me 262 capable of climbing to intercept altitude with extreme rapidity. The first of these, the Messerschmitt Me 262C-1a ‘Heimatschützer I’ converted from a Me 262A-1a, was flown for the first time on February 27, 1945. The Me 262C-1a had a Walter bi-fuel rocket motor mounted in the extreme rear of the fuselage. Tanks for the ‘T-Stoff’ and ‘C-Stoff’ for the rocket engine and the fuel tanks for the turbojet engines were located in the fuselage. Although the rocket motor did reduce the take-off run of the Me 262C-1a, its primary function was to boost climb rate. Once started the rocket motor provided full power for three minutes which was sufficient to push the Me 262C-1a to an altitude of 26,250 ft. From a standing start an altitude of 38,400 ft could be reached in 4.5 min. Four flight tests were completed before development of this ‘Heimatschützer’ was discarded in favor of the Messerschmitt Me 262C-3 ‘Heimatschützer IV’. One Messerschmitt Me 262C-1a only was built, but the aircraft shown here could be attached to the JV 44 (Jagd Verband, Pursuit Unit) —- assumed of serial production (Ref.: 7).
POWER PLANT: Two Junkers Jumo 004B-2 turbojet engines, rated at 900 kp each
PERFORMANCE: 510 mph at 32,800 ft
COMMENT: Another development of the Messerschmitt Me 262A-1a series was the Messerschmitt Me 262A-1a/U3 reconnaissance fighter. Several aircraft featured a bay in the nose for two side-by-side obliquely-mounted cameras. These could be two Rb 50/30s or an Rb 20/30 and a Rb 75/30. A small observation window was introduced into the floor of the cockpit. Due to the size of the cameras two bulge at both sides of the nose were installed. Because of the high speed all cannon armament was discarded. These aircraft were deployed to tactical reconnaissance groups (NAG = Nahaufklärergruppe) (Ref.: 7).
POWER PLANT: Two Junkers Jumo 004B-2 turbojet engines, rated at 900 kp each
PERFORMANCE: 624 mph
COMMENT: The Messerschmitt Me 262 V9 was the 9th prototype and had nearly the same airframe as the Me 262A. It was completed in January 1944, it’s primary task being high speed trials up to the fighter’s Mach limitation. During the course of these various aerodynamic improvements were introduced. The leading edge of the inner wing as well as of the vertical tail was increased to 45 degree, the leading edge of the horizontal tail was swept back to 40 degree, a shallow, low-drag cockpit canopy was installed, and the muzzles were faired over. The highest speed attained by this experimental aircraft being 624 mph which was clocked at Leipheim on July 1944 (Ref.: 7).
POWER PLANT: Two Junkers Jumo 004B-1 turbojet engines, rated at 900 kp each
PERFORMANCE: 540 mph at 19,700 ft
COMMENT: The Messerschmitt Me 262, nicknamed ‘Schwalbe’ (‘Swallow’) was the world’s first operational turbojet engine powered fighter aircraft. Design work started in late 1938 when deliveries the first brand new BMW and Junkers turbojet engines were expected. Immediately, Messerschmitt began design studies on a fighter project under the designation Messerschmitt Me P.1065. The RLM ordered to build a mock-up and the evaluation expected promising results. Delayed production of turbojet engines led to the installation of a Junkers Jumo 210 G piston engine into the first aircraft, now officially designated Messerschmitt Me 262 V1. In spring 1940 first BMW P.3302 turbojets were available (prototypes of the later BMW 003 jet engines) and – installed additionally to the piston engine – the first flight was made on March 1942. Because the BMW engines were not operationally at all the Me 262 V-3 was equipped with two Junkers Jumo 004 turbojet engines and made the first pure jet flight in July 1942. All flight tests were promising and production order for the new fighter was placed. One of the most advanced aviation designs in operational use during World War II, the Me 262 was used in a variety of roles, including light bomber, fighter bomber, reconnaissance, and night fighter. The Me 262 was faster, and more heavily-armed than any Allied fighter, including the first British turbojet-powered fighter Gloster ‘Meteor’. But permanent engine problems and top-level interference kept the aircraft from operational status with the Luftwaffe until mid-1944. In total about 1,400 Me 262s were produced when the WW II ended. Primary production version was the Messerschmitt Me 262A-1a, usable as both fighter and fighter-bomber. The aircraft shown here belonged to the III./JG 7 (Third Group / Fighter Squadron 7) and has two Wfr.Gr. 21 (‘Werfer-Granate’, Rocket propelled shell) on bomb racks (Ref.: 20, 24).
POWER PLANT: One Heinkel-Hirth HeS 011 turbojet engine, rated at 1,300 kp thrust
PERFORMANCE: 617 mph
COMMENT: At the end of 1944, when the construction drawings of the Messerschmitt Me P. 1101 were completed, and in the light of the critical situation of Germany it became obvious that the production of that new fighter was too complicated and too expensive. Messerschmitt’s design bureau began work on a less advanced design that should be an intended improvement to the Messerschmitt Me P. 1101. This Messerschmitt Me P. 1106 based on the Me P. 1101 but went through several redesigns. The first version (Me P. 1106/I) had a short fuselage and a T-tail plane with cockpit faired into the vertical stabilizer, similar to the Lippisch Li P. 13a. The second (Me P. 1106/II) design had a short fuselage, too, the tail plane of butterfly style and the cockpit far aft. A third and final design (Me P. 1106/III) had a longer and slim fuselage with a V-tail plane and the cockpit moved slightly forward. In all designs the wings were swept back at 40 degrees. The planned power plant was a Heinkel HeS 011turbojet engine, and armament was to be two 30 mm MK 108 cannon. Since the cockpit had poor visibility and calculated performance had not been improved compared to the Me P. 1101, the Messerschmitt Me P. 1106/III project was abandoned (Ref.: 17, 22).
POWER PLANT: One Junkers Jumo 004B turbojet engine, rated at 950 kp thrust or one Heinkel-Hirth HeS 011 turbojet engine, rated at 1,300 kp thrust
PERFORMANCE: 598 mph at 25,800 ft (with HeS 011 turbojet)
COMMENT: In early 1944, the RLM (Reichsluftfahrtministerium, Reich Air Ministry) became aware of Allied jet developments, and were particularly concerned that they might have to face the Gloster Meteor over the continent. In response, they instituted the Jägernotprogramm (Fighter emergency program) which took effect on July 3, 1944, ending production of most bomber and multi-role aircraft in favour of fighters, especially jet fighters. Additionally, they accelerated the development of experimental designs that would guarantee a performance edge over the Allied designs, designs that would replace the first German jet fighters, the Messerschmitt Me 262 and Heinkel He 162. Focke-Wulf Company proposed its design Focke-Wulf Ta 183 Huckebein, powered by the advanced Heinkel-Hirth HeS 011 turbojet, although the first prototypes were to be powered by the Junkers Jumo 004B. The wings of the new design were swept back at 40° and were mounted in the mid-fuselage position. The wings appear to be mounted very far forward compared with most designs, a side-effect of attempting to keep the center of pressure (CoP) of the wing as a whole as close to the middle of the fuselage as possible. The original design used a T-tail, with a notably long vertical stabilizer and a seemingly undersized horizontal stabilizer. The vertical tail was swept back at 60°, and the horizontal tail was swept back and slightly dihedralled. Many problems beset the project, work therefore concentrated on the much less problematical Focke-Wulf Projekt VII “Flitzer”. However, when the RLM eventually rejected that design and in late 1944 the Focke Wulf Ta 183 Huckebein was again brought to the fore. Detailed blue-prints were readied in beginning of 1945 and construction of several prototypes began immediately. The first flight of the aircraft was scheduled for May 1945, but none aircraft was completed by 8 April 1945, when British troops captured the Focke-Wulf facilities.
The name “Huckebein” is a reference to a trouble-making raven (Hans Huckebein, der Unglücksrabe) from an illustrated story in 1867 by famous cartoonist Wilhelm Busch. (Ref.:24).
POWER PLANT: One Heinkel-Hirth HeS 011 turbojet engine, rated at 1,300 kp thrust
PERFORMANCE: 615 mph
COMMENT: As part of the “Jägernotprogramm” (Fighter emergency program), at the beginning of 1945 a programme was launched by the Oberkommando der Luftwaffe, (OKL, Luftwaffe High Command) in order to replace the Heinkel He 162 “Salamander”
(“Volkskjäger”, “Peoples fighter” ). The new aircraft was intended to have superior performance in order to deal with high altitude threats such as the Boeing B-29 “Superfortress”, first missions expected in summer 1945. To meet this requirement, power was to be a single Heinkel HeS 011 turbojet. Proposals were brought forward by other German aircraft makers so as the Blohm & Voss Bv P.212, Focke-Wulf Ta 183, Heinkel He P.1078,Junkers EF 128, and Messerschmitt Me P.1110. The designs of the official winner of the competition, the Junkers EF 128, were submitted in February 1945. This more advanced fighter attracted more interest than the austere Miniaturjäger (Midget fighter) among German aircraft manufacturers, but at the time of the end of WWII only models had been built. It had swept wings of 45 degrees which included wood in their construction. The air intake for the turbojet was with boundary layer suction aerodynamically refined, the air left the fuselage behind the cockpit. A model for wind-tunnel experiments and a mock-up of the fuselage are built. Estimated flight characteristics and performance were optimistic and led to an order for mass production starting in mid1945. There was a projected variant of a two-seater all-weather and night fighter with a lengthened fuselage, pressure-cabin and FuG 240 “Berlin” radar. (Ref.: 22, 24).
Scale 1:72 aircraft models of World War II
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