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Boeing FB / PW-9 / AT-3
The Boeing Model 15 was a United States single seat open cockpit biplane fighter aircraft of the 1920s.
The Model 15 saw service with the United States Army Air Service as the PW-9 series and with the United States Navy as a carrier-based fighter as the FB series.
Three prototypes built for Air Service evaluation.
First aircraft scrapped at McCook Field on February 21, 1925,
Second static tested in October 1928 and the
Third was still flying in December 1928.
First production variant, D-12 engine.
One modified PW-9A, delivered as PW-9B in 1927.
Final production variant.
Boeing Model 58
Designation of one PW-9 re-engine with 510 hp (380 kW) Packard 1A-1500 engine.
Designation of one PW-9A converted to single-seat trainer with Wright-Hispano engine.
Ten built as FB-1s from initial order of 16, remaining six modified to other sub-types (FB-2, FB-3, FB-4). Powered by a 435 hp (324 kW) Curtiss D-12.
Initial Navy delivery, shore-based only.
Boeing designation Model 53
Two FB-1s modified for carrier operation, 510 hp (380 kW) Packard 1A-1500 engine.
Boeing Model 55
Three built to evaluate 510 hp (380 kW) Packard 1A-1500 engine, floatplane model.
Boeing designation Model 54
One built, experimental model with a 450 hp (340 kW) Wright P-1 radial engine.
Boeing Model 67
Powered by 520 hp (390 kW) Packard 2A-1500 engine.
Boeing Model 54
One built, experimental model with a 450 hp (340 kW) Pratt & Whitney R-1340-B Wasp engine.
Proposed version powered by a Pratt & Whitney Wasp engine, not built.
23 ft 5 in (7.14 m)
32 ft 0 in (0 m)
8 ft 2 in (2.49 m)
260 sq ft (24 m2)
1,936 lb (878 kg)
3,120 lb (1,415 kg)
1 × Curtiss D-12 water-cooled V-12,
435 hp (324 kW)
159 mph (256 km/h, 138 kn)
142 mph (229 km/h, 123 kn)
390 mi (630 km, 340 nmi)
18,925 ft (5,768 m)
Rate of climb
1,630 ft/min (8.3 m/s)
12.0 lb/sq ft (58.7 kg/m2)
0.14 hp/lb (0.22 kW/kg)
2 × fixed .30 in (7.62 mm) machine guns
1 × 244 lb (111 kg) bomb.
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