The sole example of the PG (Pursuit and Ground
Attack) category aircraft to be developed for the US
Army, the PG-1 was designed by the Service's
Engineering Division for the dual role of destroying
armoured attack aircraft and ground strafing. Created
by a team headed by Isaac M Laddon, the PG-1 was a
single-bay biplane with ailerons in the upper wing
only, V-type interplane struts and a narrow-chord
lower wing. There was only a nominal gap between the
upper wing and the forward fuselage decking, the centre section being cut away ahead of the single-seat
cockpit which had quarter-inch (6.30mm) armour protection.
A particularly innovative feature of the PG-1
was the installation of a 37mm Baldwin cannon firing
through the propeller hub, plus a single 12.7mm machine gun. The intended power plant was a
330hp Wright K-2 eight-cylinder water-cooled engine,
and a contract for the construction of three prototypes
was let to the Aeromarine Plane and Motor Company of
Keyport, NJ, in May 1921. The first of these was flown
on 22 August 1922 with a Packard 1A-1116 engine of
346hp, the K-2 having still to be cleared for flight testing.
A second example was completed and both were
flight tested for the Army Air Service at McCook Field,
but performance proved disappointing and the aircraft
was unpopular with its pilots owing to poor visibility
from the cockpit and high vibration levels. The PG-1
was tested with the Packard 1A-1116 and 1A-1237
engines, and the Wright K-2, but was soon abandoned.
|A three-view drawing (1660 x 1075)|
| Take-off weight||1777 kg||3918 lb|
| Empty weight||1374 kg||3029 lb|
| Wingspan||12.19 m||40 ft 0 in|
| Length||7.47 m||25 ft 6 in|
| Height||2.44 m||8 ft 0 in|
| Wing area||36.13 m2||388.90 sq ft|
| Max. speed||209 km/h||130 mph|
| Range||314 km||195 miles|
|Graham Clayton, e-mail, 13.02.2021 04:20|
"A particularly innovative feature of the PG-1 was the installation of a 37mm Baldwin cannon firing through the propeller hub."
Were there any issues with the recoil of the gun?
|Jaime Chiriboga, e-mail, 12.10.2010 18:51|
please... you give me more photos of this airplane..because I need to know the exact model of this airplane... because I had that to build this airplane at smaller scale...thanks for your understanding and for your help...
Do you have any comments?
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