Boeing GA-1 / Model 10

1st Flight 1920

The Boeing GA-1 Model 10 was an armored Triplane.

Designed in 1919, it was powered by a pair of modified Liberty engines driving pusher propellers.

The first of the Engineering Division’s heavily armored GAX series (ground attack, experimental) aircraft, the ponderous airplane was intended to strafe ground troops while remaining immune to attack from the ground as well as from other enemy aircraft.

It was so well armored that its five-ton weight proved excessive.

Variants

GA-1

Armored triplane, one pilot and two gunners, two Liberty L-12A V pusher engines of 435 hp (324 kW).

GA-2

Biplane, one pilot and two gunners, 750 hp (559 kW) Engineering Division W-18 engine, one 37mm cannon and 6 0.3 in (7.62mm) machine guns.

Specifications

Crew

three

Length

33 ft 7 in (10.25 m)

Wingspan

65 ft 6 in (19.97 m)

Height

14 ft 3 in (4.34 m)

Wing area

1,016 sq ft (94.39 m2)

Empty weight

7,834 lb (3,553 kg)

Gross weight

10,426 lb (4,729 kg)

Powerplant

2 × Liberty L-12A Pusher , 435 hp (324 kW) each

Performance

Maximum speed

105 mph (169 km/h, 91 kn)

Cruise speed

95 mph (153 km/h, 83 kn)

Range

350 mi (563 km, 300 nmi)

Service ceiling

11,500 ft (3,505 m)

Rate of climb

600 ft/min (3.05 m/s)

Armament

1 x 37 mm Baldwin cannon

8 x .30 cal. Browning machine guns

(With some machine guns removed, 10 small fragmentation bombs could be carried).

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