Packard 1A-1500

1A-1500
Type	Liquid-cooled V-12 piston engine
Manufacturer	Packard
First run	1924
Number built	29

The Packard 1A-1500 was an American 12-cylinder liquid-cooled 60-degree Vee piston aircraft engine designed in 1924.^[1] Test flown in the second prototype Douglas XO-2 it proved to be unreliable. Only 29 engines were built.

Applications

Specifications (1A-1500)

Data from STATISTICS OF ALL THE AERO ENGINES OF PACKARD^[2]

General characteristics

Type: V-12 liquid-cooled piston aircraft engine
Bore: 5 ³&fras1;₈ in (136.5 mm)
Stroke: 5 ¹&fras1;₂ in (140 mm)
Displacement: 1,498 in³ (24.5 L)
Dry weight: 720 lb (326.5 kg)

Components

Valvetrain: Four valves per cylinder, overhead camshaft
Cooling system: Liquid-cooled

Performance

Power output: 500 hp (370 kW) at 2,000 rpm maximum continuous;520 hp (390 kW) at 2,200 rpm for takeoff
Specific power: 0.347 hp/cu in (15.8 kW/l)
Power-to-weight ratio: 0.722 hp/lb (1.187 kW/kg)

References

Notes

^ Gunston 1989, p.109.
^ Neal, Bob. "STATISTICS OF ALL THE AERO ENGINES OF PACKARD" (pdf). Aircrqaft Engine Historical Society. Washington D.C. Retrieved 20 January 2018.

Bibliography

Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
Aircraft Engine Historical Society

[1] Gunston 1989, p.109.

[packard-2] Neal, Bob. "STATISTICS OF ALL THE AERO ENGINES OF PACKARD" (pdf). Aircrqaft Engine Historical Society. Washington D.C. Retrieved 20 January 2018.

[1]

[2]