The Blohm und Voss Ha 137 was a prototype dive bomber built before World War 2.
Whilst in Japan working for Kawasaki, Dipl-lng Richard Vogt had devised a novel form of wing based on a single strong tubular spar serving as the main fuel tank. He used this for a projected single-seat dive bomber, powered by either a Rolls-Royce Kestrel or Pratt Er Whitney (BMW) Hornet, and with the wing having inverted-gull form. After a mock-up review in October 1934 the first prototype (Ha I37 V1) was flown in April 1935 with BMW 132 (Hornet) of 72Ohp. Though it did not have an observer with rear gun, as specified for the Luftwaffe Sturzbomber requirement (met by the Ju 87), the 137 was so tough and manoeuvrable that three more were bought with the 610hp Jumo 210. and one with the Kestrel. Ultimately two more Jumo-engined examples were ﬂown, but personnel changes (notably Udet's appointment as head of the RLM tech-development staff in 1936) caused it to be dropped. despite its promise as a close-support attack bomber and straffer.
- Origin: Hamburger Fiugzeugbau GmbH.
- Type: Dive bomber and close-support aircraft.
- Engine: See text.
- Dimensions: Span 36ft 7in (ii-15m); length 31ft O%in (9-46m); height 9ft2%in (2~8m).
- Weights: Empty 4,000lb (1814kg); loaded 5.824ib (2415kg).
- Performance: Maximum speed (V4) 205mph (33Okm/h); range 360 miles (580km).
- Armament: Two 7.92mm MG 17 in fuselage and two more (or 20mm MG FF) in top of landing gear trousers; four 110lb (50kg) bombs on wing racks.