From markings on this artifact, it was identified as a Yamaha manufactured Model 2D60 propeller, of the "Hamilton Type." It was produced on February 23, 1941 for use on a Tachikawa "Ki-54" twin engine advanced trainer aircraft with a Hitachi Ha-13-Ko engine. Prior to World War II, Hamilton Standard sold the right to manufacture propellers in several foreign countries, including Japan.

Begun in the late-19th century as an organ, and later piano, manufacturer, Yamaha first designed wooden aircraft propellers, and then expanded into metal versions before it was forced to abandon production. Using the idle metal production equipment, motorcycles later became part of Yamaha's repertoire after World War II.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Date Feb 23, 1941 Country of Origin Japan Type PROPULSION-Propellers & Impellers Manufacturer Yamaha
 Physical Description Type: Two-Blade, Variable-Pitch, Metal Diameter: 254 cm (100 in.) Chord: 19.1 cm (7.5in.) Engine Application: Hitachi Type 98 Ha-13-Ko, Air Cooled, Radial, 336 kw (450 hp) Dimensions Rotor/Propeller: 254 x 19.1 x 26.7 x 36.8cm (100 x 7 1/2 x 10 1/2 x 14 1/2 in.)
3-D (Blade Length): 120cm (47 1/4 in.)
Storage: 174.6 x 52.1 x 52.7cm (68 3/4 x 20 1/2 x 20 3/4 in.)
 Materials Steel
Aluminum
 Inventory Number A19710944000 Credit Line Transferred from the U.S. Navy Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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