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| In May 1928, the USAAC issued a single-seat fighter
specification to which Boeing responded with a
shoulder-wing all-metal monoplane, the Model 96,
which was assigned the official designation XP-9. Low
development priority and production problems delayed
the planned delivery date of the XP-9 from April 1929
until September 1930, the aircraft eventually flying for
the first time on 18 November of that year. Powered by a
Curtiss V-1570-15 liquid-cooled engine rated at 600hp, but actually delivering 583hp, the XP-9 featured a
semi-monocoque fuselage of sheet Dural over metal
formers. Performance proved disappointing, the poor
vision from the rear-positioned cockpit and the
unpleasant handling characteristics resulting in the
test pilot referring to the XP-9 as "a menace". After
initial tests, the original vertical tail surfaces were replaced
by larger P-12 surfaces, but little improvement
resulted and the USAAC did not exercise its option on
five Y1P-9s.
| WEIGHTS |
| Take-off weight | 1643 kg | 3622 lb |
| Empty weight | 1210 kg | 2668 lb |
| DIMENSIONS |
| Wingspan | 11.13 m | 37 ft 6 in |
| Length | 7.66 m | 25 ft 2 in |
| Height | 2.36 m | 8 ft 9 in |
| PERFORMANCE |
| Max. speed | 343 km/h | 213 mph |
 | A three-view drawing (1280 x 840) |
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Did you ever find the plans for the XP-9?
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