Object Details
- Manufacturer
- The Sperry Gyroscope Co.
- Physical Description
- 1.5 inches diameter, 3.5 inches long; gray metal; streamlined, strut mount.
- Summary
- Elmer Sperry developed the Stallemometer as a follow-on component to the first successful aircraft autopilot, demonstrated by Sperry in 1914. The Stallemometer detected a stall flutter and then function as a switch to drop the nose by twenty degrees through the autopilot until a stall recovery occurred. A light provided a further warning that the stall had occurred and a recovery was underway. Like the autopilot itself, the Stallemometer was not seen by aviators as a desirable innovation due to cost, weight, complexity and its subsuming of pilot control over the flight. Such systems did enjoy a resurgance fifty years later as increasing levels of autopilot autonomy became standard on larger transport aircraft.
- Credit Line
- Gift of the Sperry Gyroscope Company
- 1915
- Inventory Number
- A19300012000
- Restrictions & Rights
- CC0
- Type
- AVIONICS-Autopilots
- Materials
- Copper Alloys
- Non-Magnetic Metal Alloy
- Glass
- Natural Fabric
- Dimensions
- Approximate (grey object): 5.1 × 59.7 × 8.3cm (2 × 23 1/2 × 3 1/4 in.)
- Approximate (black object): 7 × 4.4 × 14cm (2 3/4 × 1 3/4 × 5 1/2 in.)
- Country of Origin
- United States of America
- See more items in
- National Air and Space Museum Collection
- National Air and Space Museum
- Record ID
- nasm_A19300012000
- GUID (Link to Original Record)
- http://n2t.net/ark:/65665/nv9b9274e0c-8d92-4c2b-82b2-d12ad7629168
