Since introduction into service, the B737-300 starter has been susceptible to clutch damage. At the onset of the problem, a team was formed to identify the causes of clutch damage and shear shaft failures and to define a corrective action. Several in-service airplanes were equipped with recording instrumentation, and data from over 10,000 start cycles was recorded. It was noted that large pneumatic duct pressure fluctuations from a variety of causes played an important role in the reason for the starter reliability problem. After understanding the problem, a design improvement program was launched to replace the current pawl-and-ratchet clutch with an inner-race overrunning sprag clutch that would be capable of withstanding resulting duct pressure fluctuations.
Enhanced Air Turbine Starter Clutch Design
Sae Technical Papers
Aerospace Technology Conference and Exposition ; 1994
1994-10-01
Aufsatz (Konferenz)
Englisch
Clutch by wire and starter-alternator
Tema Archiv | 2005
|Optimal Design of Roller One Way Clutch for Starter Drives
British Library Conference Proceedings | 2004
|Engineering Index Backfile | 1951
Optimal Design of Roller One Way Clutch for Starter Drives
SAE Technical Papers | 2004
|Optimal Design of Roller One Way Clutch for Starter Drives
British Library Conference Proceedings | 2004
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