Aeronautics and astronautics – Aircraft control
Patent
1994-11-17
1996-12-10
Kashnikow, Andres
Aeronautics and astronautics
Aircraft control
B64C 1300, F16H 5710, F16H 5712
Patent
active
055823904
ABSTRACT:
A linear ballscrew type actuator including a bi-directional no-back device having both primary and secondary no-back features is provided. The secondary no-back features only become active following a failure of the primary no-back features, thereby ensuring maximum reliability by precluding wear or fatigue of the secondary no-back components during normal operation of the actuator. The secondary no-back features are provided by secondary pawl mechanisms mounted at the distal end of an articulated eccentric arm. The angular position of the eccentric arm is utilized to annunciate the operational condition of the no-back device. Angular motion of the eccentric arm is utilized to trigger engagement of a secondary locking device, upon failure of the primary no-back features.
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patent: 2653691 (1953-09-01), Weiland
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patent: 4834225 (1989-05-01), Klopfenstein et al.
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Crowe Lawrence E.
Kashnikow Andres
Mojica Virna Lissi
Sundstrand Corporation
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