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Lightweight Springs for Limited Life
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English
Abstract
A SPRING in the Constellation (749) main landing-gear drag-strut damper was redesigned to save 17 lb. The smaller spring required a reduced-size housing, and the overall weight saving per airplane using two such units totaled 55 lb. These springs have served well for over 20,000 hr.
This unusual weight saving was achieved by increasing the working stress more than 50% over conventional design practice. A high working stress was made possible through the use of preset and stresspeen techniques on springs of unusually high quality.
Authors
Citation
Spaulding, E., "Lightweight Springs for Limited Life," SAE Technical Paper 560041, 1956, https://doi.org/10.4271/560041.Also In
References
- Product Engineering, Vol. 21 November 1950 117 140 “Fatigue Weakness of Surfaces,” Almen. J. O.
- SAE Transactions Vol. 51 July 1943 248 268 “Shotblasting to Increase Fatigue Resistance,” Almen. J. O.
- National Defense Committee of OSRD War Metallurgy Division 1944 46 47 “Effect of Shot-peening on the Physical Properties of Steel,” Mattson R. L. Almen. J. O.
- Product Engineering, Vol. 24 July 1953 189 191 “Residual Compressive Stress Strengthens Brittle Materials,” Almen. J. O.
- National Defense Committee of OSRD, War Metallurgy Division Final Report 1945 108 109 “Effect of Shot-peening on Physical Properties of Steel,” Mattson R. L. Almen. J. O.