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NASA-LLIS-2839
Lessons Learned – Reduced Torque Output from Electro-Mechanical Actuators
Year: 2010
Abstract: Abstract:
Reduced torque output of the orbiter's electromechanical actuators has been a problem for the Shuttle Program. It has resulted in unplanned work to test, remove, and refurbish the actuators. Disassembly and inspection has revealed that the torque reduction is a result of problems with the torque limiters and the motor clutch/brake assemblies in the actuators. Refurbishment is a lengthy process because of the difficulty involved in setting the torque limiter to operate through the required temperature range. The next generation of actuators should have a better design, or the mechanical system should be capable of withstanding the maximum output loads of the actuator.
Reduced torque output of the orbiter's electromechanical actuators has been a problem for the Shuttle Program. It has resulted in unplanned work to test, remove, and refurbish the actuators. Disassembly and inspection has revealed that the torque reduction is a result of problems with the torque limiters and the motor clutch/brake assemblies in the actuators. Refurbishment is a lengthy process because of the difficulty involved in setting the torque limiter to operate through the required temperature range. The next generation of actuators should have a better design, or the mechanical system should be capable of withstanding the maximum output loads of the actuator.
Subject: Engineering design and project processes and stndards
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T16:16:41Z | |
| date available | 2017-09-04T16:16:41Z | |
| date copyright | 05/04/2010 | |
| date issued | 2010 | |
| identifier other | TAQSTCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/80053 | |
| description abstract | Abstract: Reduced torque output of the orbiter's electromechanical actuators has been a problem for the Shuttle Program. It has resulted in unplanned work to test, remove, and refurbish the actuators. Disassembly and inspection has revealed that the torque reduction is a result of problems with the torque limiters and the motor clutch/brake assemblies in the actuators. Refurbishment is a lengthy process because of the difficulty involved in setting the torque limiter to operate through the required temperature range. The next generation of actuators should have a better design, or the mechanical system should be capable of withstanding the maximum output loads of the actuator. | |
| language | English | |
| title | NASA-LLIS-2839 | num |
| title | Lessons Learned – Reduced Torque Output from Electro-Mechanical Actuators | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;2010 | |
| contenttype | fulltext | |
| subject keywords | Engineering design and project processes and stndards | |
| subject keywords | Entry Systems | |
| subject keywords | Ground Operations | |
| subject keywords | Ground processing and manifesting | |
| subject keywords | Launch Vehicle | |
| subject keywords | Long term sustainability and maintenance planning | |
| subject keywords | Orbiting Vehicles | |
| subject keywords | Review systems and boards | |
| subject keywords | Spacecraft |