SEARCH · Engineering Papers
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Prolonged transverse acceleration effects on motor activity of dog gastrointestinal system
Automatic control of voltage supply to direct current motor
Motor starting characteristics of two inductor alternators
Hermetic induction motor-driven pump for Brayton cycle heat rejection loop
Static firing tests to reduce glass fiber defects and to improve field repair work on X-248 rocket motor cases
Static firing tests to reduce glass fiber defects and to improve field repair work on X-248 rocket motor case - Supporting tables and figures
Static firing tests to reduce glass fiber defects and to improve field repair work on X-248 rocket motor cases - Inspection, repair and firing data
Magnetic core logic circuit system for bidirectional stepping motor drive voltage power supply control in proper phase and time sequence
Multipulse thruster module design and development tests for spacecraft attitude control, noting micropulse solid propellant rocket motor
Rocket motor integration into Scout vehicle to improve performance
Nozzle erosion profile, char penetration and temperature response predicted for nozzle material for 260 SL-3 motor
Sterilized solid propellant motors applicability to planetary landing capsule spin stabilization
Fluid controlled solid rocket motors design for Mars mission with acceleration level as parameter, discussing mission specifications, system design and component considerations
Mission and planetary vehicles characteristics affecting design of solid propellant motors and thrust vector control systems in planetary orbiters and landers
Test apparatus, procedures, and results are given for dc-motor brushes operating in dry argon. Minimum concentrations of argon impurities are also determined.
Encoding mechanism integral to the motor and using the permanent magnets embedded in the rotor eliminates the need for external devices to encode information relating the position and velocity of the rotating member.
Direct drive electromechanical system is composed of brushless dc torque motor, offset-tooth magnetic sensor that derives position and rate information directly from output shaft, and rotary power transformer that transfers electrical power from external source to proper load. System has high servo loop stiffness and minimum power consumption.
SNAP 8 sodium potassium pump-motor assembly start tests