| The final production PW-9D (the 16th) was retained by
Boeing for the experimental installation of a 600hp
water-cooled Curtiss Conqueror V-1570 engine and, as
the XP-7 (Model 93), was eventually delivered to the
USAAC on 4 September 1928. Distinguished from the
PW-9D by a shorter, deeper nose with a larger radiator,
the XP-7 enjoyed some success during trials, proving
the suitability of the Conqueror for fighter installation,
but proposals to build four service evaluation P-7s were
As the XP-7, the last production PW-9 was used
to test the Conqueror engine for fighter use.
abandoned when it was concluded that the basic PW-9
airframe had reached the limit of its development. The
XP-7, the last Boeing fighter biplane to employ a liquid-cooled
engine, was reconverted to PW-9D standards.
WEIGHTS |
Take-off weight | 1479 kg | 3261 lb |
Empty weight | 1053 kg | 2321 lb |
DIMENSIONS |
Wingspan | 9.75 m | 32 ft 0 in |
Length | 7.31 m | 24 ft 0 in |
Height | 2.74 m | 9 ft 0 in |
Wing area | 22.39 m2 | 241.00 sq ft |
PERFORMANCE |
Max. speed | 269 km/h | 167 mph |
Animalia, 20.06.2011 14:07 biplane to employ a liquid-cooled engine, was reconverted to PW-9D standards. reply |
Do you have any comments?
|
|  COMPANY PROFILE All the World's Rotorcraft
|