| 词条 | Huff-Daland XB-1 | ||||||||||||||||||
| 释义 |
The Huff-Daland XB-1 was a prototype bomber aircraft built for the United States Army Air Corps. The XB-1 was the first aircraft named using just a B- designation. Prior to 1926, the U.S. Army used LB- and HB- prefixes, signifying 'Light Bomber' and 'Heavy Bomber'. The first XB-1, called the Super-Cyclops by Huff-Daland,[1] was an extension of the earlier Huff-Daland XHB-1 'Cyclops'. It was essentially the same in size, but sported a twin tail and twin engines. Design and developmentThe XB-1's gunnery arrangement was new for an American bomber, but it had been previously used by the British and the Germans near the end of World War I. The Army Air Corps had decided that single-engined bombers such as the XHB-1 performed more poorly and with less safety than the more traditional twin-engined bomber. Operational historyThe aircraft flew for the first time in September 1927. Its original Packard engines did not provide enough power for the aircraft, and it was refitted with more powerful Curtiss Aircraft "Conqueror" engines. This new configuration was designated the XB-1B. Three other similar aircraft designs were requested by the Army Air Corps around the same time which competed against the XB-1 for the contract. Of these three (the XB-2 Condor, the Sikorsky S-37 and the Fokker XLB-2), the Curtiss model eventually won, and only a single XB-1 was ever produced. Specifications (XB-1B){{aircraft specifications|plane or copter?=plane |jet or prop?=prop |crew=5 |length main=61 ft 6 in |length alt=18.7 m |span main=85 ft 0 in |span alt=25.9 m |height main=19 ft 3 in |height alt=5.9 m |area main=1,604 ft² |area alt=149.0 m² |empty weight main=9,462 lb |empty weight alt=4,292 kg |loaded weight main=16,500 lb |loaded weight alt=7,480 kg |max takeoff weight main= |max takeoff weight alt= |number of props=2 |engine (prop)=Curtiss V-1570-5 Conqueror |type of prop=liquid-cooled V12 engines |power main=600 hp |power alt=450 kW |max speed main=100 mph |max speed alt=86 kn, 160 km/h |range main=700 mi |range alt=610 NM, 1,100 km |ceiling main=15,000 ft |ceiling alt=4,600 m |loading main=5.899 lb/ft² |loading alt=28.80 kg/m² |power/mass main=0.072 hp/lb |power/mass alt=120 W/kg |guns=6 × .30 in (7.62 mm) Lewis machine guns |bombs=2,500 lb (1,100 kg); 4,000 lb (1,800 kg) on short runs }} See also{{aircontent|related=
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}} References1. ^{{cite news |page=8 |date=August 5, 1927 |title=To Test Bomber |url=https://news.google.com/newspapers?id=svBQAAAAIBAJ&sjid=8r0MAAAAIBAJ&pg=2553,196305&dq=giant+indian+skeleton&hl=en |newspaper=Lawrence Journal-World |accessdate=April 29, 2017}} External links{{commons category|Huff-Daland XB-1}}
5 : United States bomber aircraft 1920–1929|Huff-Daland aircraft|Biplanes|Aircraft first flown in 1927|Twin piston-engined tractor aircraft |
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