Packard 2A-1500 V-12 Engine


Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item Summary:

In 1923, the Packard Motor Car Company of Detroit, Michigan, began the development of a new series of 12-cylinder aircraft engines that would more fully meet the requirements of the Army and Navy. In these new designs, a great step forward was made in decreasing the weight per horsepower. The first engine employing the new form of construction, the 268 kW (360 hp) Packard 1300 was built under a Navy contract. While this engine was under development, the Packard Company obtained an Army contract for a refined and enlarged version known as the 1500. This was superseded by the 2A-1500 which was built in upright direct drive and geared configurations and inverted direct drive configurations.

This is an upright direct drive Model 2A-1500. Among the aircraft powered by the Packard 2A-1500 engine were the Curtiss R3C-3 racer, the two-engine Huff-Daland XB-1 bomber, Boeing FB-5 pursuit aircraft, and Navy PN-10 seaplane.

Collection Item Long Description:

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum

Credit Line

Found in Collection.


Steel, Aluminum, Paint, Rubber, Copper, Textile, Phenolic, Preservative Coating, Brass


Depth 127 cm (50 in.), Length 182.9 cm (72 in.), Width 101.6 cm (40 in.)

Country of Origin

United States of America


Circa 1926

Physical Description

  • Type: Reciprocating, V-type, 12 cylinders, water-cooled
  • Power rating: 447 kW (600 hp) at 2,500 rpm
  • Displacement: 25 L (1530.4 cu in.)
  • Bore and Stroke: 137 mm (5.375 in.) x 140 mm (5.5 in.)
  • Weight: 345 kg (760 lb)


PROPULSION-Reciprocating & Rotary

Inventory Number