This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Collection Item Summary:
The Hamilton Standard Hydromatic propeller introduced in the 1930s was a significant advance over the counterweight, controllable pitch propeller. Application of oil pressure to both sides of the actuating piston provided increased capacity and the capability of feathering or unfeathering by a single control knob. Reverse pitch permitted shortened landing roll.
With this advance, Hamilton Standard became the primary propeller manufacturer for the Allies during World War II. Virtually the entire front-line inventory, from multiengine bombers to fighter and transport aircraft, as well as a significant majority of RAF aircraft, employed Hydromatic propellers. Hamilton Standard and its three licensees--refrigerator manufacturers Frigidaire and Nash-Kelvinator, and office equipment maker Remington-Rand--produced 530,135 Hydromatic propeller assemblies during the war. This artifact was manufactured by Nash-Kelvinator.
Collection Item Long Description:
- Synthetic Rubber
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- Type: Three-Blade, Constant-Speed, Metal
- Diameter: Unknown
- Chord: Unknown
- Engine Application: Unknown