Bell TP-39 Trainer

 

1st Flight 1938

The TP-39 was a dual seat training version of the P.39 Airacobra.

Variants

TP-39F-1 – One P-39F converted as a two-seat training version with additional cockpit added in nose— no armament.

TP-39Q-5 – One conversion to a two-seat training variant with additional cockpit added in nose – no armament. Enlarged tail fillet and a shallow ventral fin added.

RP-39Q-22 – 12 P-39Q-20s converted to two-seat trainers .

Specifications

Crew: two

Length: 30 ft 2 in (9.19 m)

Wingspan: 34 ft 0 in (10.36 m)

Height: 12 ft 5 in (3.78 m)

Wing area: 213 sq ft (19.8 m2)

Empty weight: 6,516 lb (2,956 kg)

Gross weight: 7,570 lb (3,434 kg)

Max take-off weight: 8,400 lb (3,810 kg)

Powerplant: 1 × Allison V-1710-85 V-12 liquid-cooled piston engine, 1,200 hp (890 kW) at 9,000 ft (2,743 m) (emergency power)

Propellers: 3-bladed constant-speed propeller

Performance

Maximum speed: 389 mph (626 km/h, 338 kn)

Stall speed: 95 mph (153 km/h, 83 kn) power off, flaps and undercarriage down

Never exceed speed: 525 mph (845 km/h, 456 kn)

Range: 525 mi (845 km, 456 nmi) on internal fuel

Service ceiling: 35,000 ft (11,000 m)

Rate of climb: 3,805 ft/min (19.33 m/s) at 7,400 ft (2,300 m) (using emergency power)

Time to altitude: 15,000 ft (4,600 m) in 4 minutes 30 seconds, at 160 mph (260 km/h)

Wing loading: 34.6 lb/sq ft (169 kg/m2)

Power/mass: 0.16 hp/lb (0.26 kW/kg).

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