Northrop JB-1 Lepakko

Northrop JB-1 Bat

MaaYhdysvallat
RooliPrototype jet-powered flying wing
Ensimmäinen lentoAugust 27, 1943
RakennettuEi tietää

Nniiden Northrop JB-1 “Bat” was a United States surface-to-surface cruise missile that was a prototype jet-powered flying wing. The United States Army Air Forces MX-543 program was initiated in September 1942 to use license-built versions of Frank Whittle’s jet engine (General Electric J31). The Northrop Corporation was contracted in late 1943, and only 10 JB-1 airframes were built. A manned version was towed for the 1st flight on “August 27, 1943”, from Rogers Dry Lake and a glider version was launched from a rocket-propelled sled and crashed in December 1944. An unmanned JB-1 powered by an improvised General Electric B-1 turbojet with a wing span of 28 feet 4 inches (8.64 m) made its 1st flight from Eglin Field’s Santa Rosa Island, Florida, on December 7, 1944, and crashed 400 yards from the rail launcher.

Lähde: Northrop JB-1 Bat on Wikipedia

Northrop JB-1 Bat Walk Around
PhotographerVladimir Yakubov
LocalisationWestern Museum of Flight, Torrance
Photos40
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The Northrop JB-1 Bat was a jet-powered flying wing cruise missile developed by Northrop Corporation during World War II. It was intended to be a surface-to-surface weapon that could deliver a 900 kg (2000 lb) bomb to a target up to 400 km (250 mi) away. The JB-1 Bat was inspired by the German V-1 flying bomb, which was discovered by the Allies in 1942. The JB-1 Bat used two General Electric B-1 turbojet engines, which were derived from a turbosupercharger design. The JB-1 Bat had a wingspan of 10.4 m (34 ft) and a length of 6.4 m (21 ft). It had a maximum speed of 640 km/h (400 mph) and a cruising speed of 480 km/h (300 mph).
The JB-1 Bat was tested as a manned glider and as an unmanned missile. The first flight of the glider version took place on August 27, 1944, with test pilot Harry Crosby at the controls. The first launch of the missile version occurred on December 7, 1944, but it failed due to an engine malfunction and an improper elevon setting. The JB-1 Bat suffered from many technical problems, such as engine failures, structural complexities, and overweight issues. Northrop tried to improve the design by using a Ford pulse jet engine instead of the GE B-1 turbojet engines, resulting in the JB-10 variant. However, the JB-10 also had poor performance and reliability. The JB-1 Bat program was canceled in 1946 after only 13 flights, none of which were successful.

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