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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.
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Lightweight cryostat made of expanded polystyrene reduces eccentricity in a tensile system being tested under liquid nitrogen. The cryostat is attached directly to the tensile system by a special seal, reducing misalignment effects due to cryostat weight, and facilitates viewing and loading of the specimens.
Split-screw grips for tensile testing provide uniform loading on the specimen shoulders. Holes in the heads enable the screws and specimen to be threaded as an assembly into a grip body, closely controlled guides and seats afford positive seating, and precision machining of mating surfaces minimizes misalignment effects.
Electrical shorting cap provides pin alignment, protection from stray voltages, and inspection capabilities. A Teflon straightener insert is built in to overcome any problems with bent or misaligned pins. A clear plastic bottom allows for inspection of the presence and condition of the pins.
Rocket engine cluster thrust and moment vectors analyzed statistically for thrust misalignment
Probability of thrust vector misalignment in ion thrustor array
Applicability of shearing and Kosters interferometers in detecting misalignment in optical telescopes
Ion beam current and direction changes due to electrode misalignment, and analysis of electrode temperature distribution and thermal stresses in ion engine thrust vector
Electrode misalignments effects on thrust vector control for Kaufman electric rocket thrustors, noting implications for SERT 2 mission
Electrode misalignments effects on thrust vector control for Kaufman electric rocket thrustors, noting implications for SERT 2 mission
Two-piece fastener bushing provides mounting surface for components on a three-inch thick honeycomb structure. Specially constructed starter drill and sheet metal drill permit drilling without misalignment. Tapered knife-edge cutting tool removes honeycomb core material without tearing the adjacent material.
Performance prediction for expected thrust misalignment in electron bombardment ion thruster
Leakage in mechanical face seals with hydrodynamic films, noting misaligned seal theories for pumping with cavities and two fluids
Test results indicate the Bossler coupling has unusual capability for accomodating combined axial motion, misalignment, and torque, suitability for applications requiring long life combined with reliability, lightweight, and minimal maintenance, and the ability to survive shock-torque greatly in excess of ultimate continuous torque.
Leakage in mechanical face seals with hydrodynamic films, noting misaligned seal theories for pumping with cavities and two fluids
Shaft misalignment effect on accuracy of precision digital shaft angle encoders, using test fixture and optical methods
Thermal testing of inflatable solar shields for cryogenic space vehicles, discussing shield misalignment effects on propellant tank temperatures
Misalignment estimation software system for calibrating in-flight slew angle scale factors and drift rates of OAO gyros