| 词条 | Boeing XP-7 | |||||||||||||||
| 释义 |
The Boeing XP-7 was a prototype United States biplane fighter of the 1920s. Development and designThe XP-7 started life as the last Boeing Model 15 (PW-9D), serial 28-41. It was then adapted to mount the 600 hp Curtiss V-1570 Conqueror engine. Labelled by Boeing as their Model 93, the XP-7's nose was shorter and deeper than that of the standard PW-9, and the craft was 75 pounds lighter overall. It first flew in September 1928 and did well, with a 17 mph speed increase over the PW-9. However, despite a proposal to build an additional four P-7s, the design was at the very limits of its capabilities and somewhat outdated even by the time of its first flight. At the end of testing, the Conqueror engine was removed and the aircraft converted back into a PW-9D.[1] Operators
Specifications{{aerospecs|ref=[1] |met or eng?=eng |crew=1 |capacity= |length m=7.31 |length ft=24 |length in=0 |span m=9.75 |span ft=32 |span in=0 |height m=2.74 |height ft=9 |height in=0 |wing area sqm=23.4 |wing area sqft=252 |empty weight kg=1,070 |empty weight lb=2,358 |gross weight kg=1,479 |gross weight lb=3,260 |eng1 number=1 |eng1 type=Curtiss V-1570-1 |eng1 kw= |eng1 hp=600 |eng2 number= |eng2 type= |eng2 kw= |eng2 hp= |max speed kmh=270 |max speed mph=167.5 |cruise speed kmh=216 |cruise speed mph=134 |range km=402 |range miles=250 |endurance h= |endurance min= |ceiling m=6,797 |ceiling ft=22,300 |g limits= |roll rate= |climb rate ms=7.2 |climb rate ftmin=1408 |armament1=1x .50in machine gun |armament2=1x .30in machine gun |armament3=125lb (57kg) bombs |armament4= |armament5= |armament6= }}{{aircontent |related= |similar aircraft= |lists=
}} References{{Commons category|Boeing XP-7}}1. ^1 2 Angelucci, 1987. p. 72.
4 : United States fighter aircraft 1920–1929|Boeing military aircraft|Single-engined tractor aircraft|Biplanes |
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