Development of a sealed brushless dc motor
Sealed brushless dc motor using photoelectronic commutation - spacecraft component
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Sealed brushless dc motor using photoelectronic commutation - spacecraft component
Brushless rotating electric generators for space auxiliary power systems -ac generators
Brushless alternating current generators for space auxiliary power systems - design manuals and computer programs
Brushless rotating alternating current generators for space auxiliary power systems
Design manuals for brushless rotating electrical generators and space auxiliary power systems
Computer programs and test data of brushless rotating electrical generators for space flight auxiliary power systems
Brushless rotating electrical generators for space auxiliary power systems
Brushless dc motor operates as a commutator in a vacuum environment with high efficiency and long life. Because of its excellent response time, it can be used in the servomechanism field.
Brushless direct current torque motor using permanent magnet rotor and three-phase winding in stationary armature for operation in vacuum
Design, development, and manufacture of inertia reaction wheel with brushless direct current motor drive
Development of brushless direct current motor concept for spacecraft power supply
Brushless DC torque motor with unique position- sensing device based on variable magnetic reluctance
Electronic commutator and rate-sensor for brushless direct-drive solar array reorientation systems
Two brushless direct current motor systems for space vehicle application
Small dc brushless motor with logic controlled semiconductor commutation power supply
Survey results are presented on the use of unconventional motor windings and switching sequences to optimize performance of brushless dc motors. A motor was built, each coil terminal having a separate, accessible lead. With the shaft and all electronics excluded, length and outside diameter measured 1.25 and 0.75 in., respectively.
Ten design manuals assembled and nine computer programs are developed for evaluation of proposed designs of brushless rotating electrical generators. Design manual package provides all information required for generator design, and computer programs permit calculation of performance of specific designs including effects of materials.