Packard 1A-1500

1A-1500
Packard 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.

Contents 1 Applications 2 Specifications (1A-1500) 3 See also 4 References 4.1 Notes 4.2 Bibliography 5 External links

Applications

• Boeing Model 15
• Boeing XP-4
• Curtiss Falcon
• Douglas XO-2
• Loening OL

Specifications (1A-1500)

General characteristics

• Type: 12-cylinder liquid-cooled Vee piston aircraft engine
• Bore: 5⅜ in (136.5 mm)
• Stroke: 5½ 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: 520 hp (387.8 kW) at 2,200 rpm for takeoff
• Specific power: 0.27 hp/in³ (12.4 kW/L)
• Power-to-weight ratio: 0.53 hp/lb (0.87 kW/kg)

See also

Comparable engines

• Curtiss D-12
• Fairey Prince (V-12)
• Rolls-Royce Kestrel
  

Related lists

• List of aircraft engines
  

References

Notes

Bibliography

External links

Packard aircraft engines Piston engines A-1500 · A-2500 · DR-980 · V-1650 · X-2775

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