Bell TP-39 Trainer

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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