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+3⁄8 in (136.5 mm)
Stroke: 5+1⁄2 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]

v t Packard aircraft engines
Piston engines	A-1100 A-1500 A-2500 DR-980 V-1650 X-2775
Turbine engines	XJ41 XJ49