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


    Applications


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


    Specifications (1A-1500)


    Data from STATISTICS OF ALL THE AERO ENGINES OF PACKARD


    = General characteristics

    =
    Type: V-12 liquid-cooled piston aircraft engine
    Bore: 5+3⁄8 in (136.5 mm)
    Stroke: 5+1⁄2 in (139.7 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)


    See also


    Packard 1A-2500

    Comparable engines

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

    List of aircraft engines


    References




    = Notes

    =


    = Bibliography

    =

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