12/18/2022 0 Comments Simpleplanes wikiB&V built a mock-up and had it tested in the LFA wind tunnel, but Messerschmitt refused to help. As late as November 1943 changes were still being made, and Blohm & Voss decided to remove the complex underwing radiators favoured by Messerschmitt for two large scoop-type units mounted above the wings. A meeting was called to finally address these problems, but the Messerschmitt people didn't bother to show up. Blohm & Voss decided that the design problems still needed fixing, but by late 1943 they still hadn't been addressed. In September 1943, an order for five prototypes was placed. In the event, no meeting of the minds was possible, and the Technische Amt eventually decided to throw Messerschmitt off the project entirely, and turn it entirely over to Blohm & Voss. Friction between the two teams got steadily worse. Several months of argument and finger-pointing between the Messerschmitt transition team and the Blohm & Voss designers followed. After some initial study, the Blohm & Voss design team deemed that the existing Messerschmitt design had too many weaknesses. In August 1943, the Technische Amt decided that Messerschmitt was over-committed, and they decided to transfer the work on the design to Blohm & Voss. Other parts were scavenged from existing Messerschmitt designs – the vertical tail was from the Me 209, and the horizontal tail and the undercarriage were taken from the Bf 109G. Standard Bf 109G wings were to be fitted outboard of a new, long-span, untapered wing center section. Air was drawn in through via a ventral trough aft of the wing. Exhaust gases were carried to the turbosupercharger via external ducts. This engine change required that the fuselage be elongated in order to house the turbosupercharger aft of the pressure cabin. However, the Technische Amt concluded that a DB 603A engine with an exhaust-driven turbosupercharger was more promising. It was estimated that a service ceiling of 14,097 m (46,250 ft) could be attained.Ī converted Bf 109G adapted to take the DB 628 engine flew in May 1942 and attained an altitude of 15,500 m (50,850 ft). The engine was to be the DB 628, which was basically a DB 605A with a two-stage mechanical supercharger with an induction cooler. Messerschmitt adapted its design to this requirement under the designation Me 155B. The proposal was designated Me 155A.īy the end of 1942, the increasing number of USAAF bombing raids and intelligence coming in about the new American B-29 bomber led the Luftwaffe to envisage a pressing need for an effective high-altitude interceptor. Additional fuel tanks were provided and an elongated, non-retractable tailwheel was added to provide ground clearance for the large bomb. All of the carrier equipment and most of the armament was removed from the aircraft. A single 1,000 kg (2,210 lb) SC 1000 bomb was to be carried. In order that all of that work on the Me 155 project not go entirely to waste, Messerschmitt adapted its design in November 1942 to match a Luftwaffe requirement for a fast single seat bomber. Work on the Graf Zeppelin carrier was eventually abandoned. Messerschmitt was told to shelve the Me 155 project for the indefinite future. However, the numerous delays in the Graf Zeppelin seemed to indicate that the completion of the carrier would be at least two years away. It had an estimated maximum speed of 649 km/h (403 mph).ĭetail design of the Me 155 was complete by Sept 1942. Proposed armament was an engine mounted 20 mm MG 151 cannon and two 20 mm MG 151 cannons and two 13 mm (.51 in) MG 131 machine guns in wings. Standard naval equipment such as folding wings, catapult spools, and arrester gear were to be fitted. The undercarriage retracted inwards into wing wells, providing the wider track required for safe carrier landings. The fuselage was more-or-less that of the standard Bf 109G, but with an entirely new wing. The Me 155 was to be powered by a DB 605A-1 liquid-cooled engine of 1,475 PS (1,455 hp, 1,085 kW). In the interest of economy and simplicity, the Me 155 was to use as many Messerschmitt Bf 109 components as possible, being basically a navalized version of the earlier Messerschmitt fighter. The Me 155 was intended to be based aboard the aircraft carrier Graf Zeppelin, then under construction. At that time, it was known under the designation of Me 155, and was a company proposal for a carrier-based single-seat fighter. The saga of the BV 155 began at Messerschmitt in the spring of 1942.
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