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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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Digital computer program for solution of space- charge-flow problem applied to design of thrustors with variable thrust vector, analyzing two ion- thrustor configurations with aid of computer
Angular and linear acceleration effects influence upon cupula with resulting changes in human nystagmus - central converging otolithic influence upon cupula
Equilibrium equations and successive approximation methods for solving axisymmetric elastic deformation of shallow spherical segment
Static pressure and flow field for flat plate model with short trailing-edge flap
Wind tunnel determination of longitudinal force characteristics for STOL aircraft scale models with varying wing aspect ratios
Aerodynamic characteristics of COIN aircraft model with boundary layer control on inverted V-tail
Flow field throughout wind tunnel containing rotor with sharply defected blades, noting reversed flow effect in front of wake
Heat transfer measurements on flat plate with trailing edge flap in hypersonic flow
Design of bladder expulsion device subjected to constraints such as cycle life, chemical inertness, and storability
Characteristics of hermetically sealed electric switch with flexible operating capability
Induced lift characteristics of swept wing-body configuration with partial-span jet in flow at Mach 0.20 to 1.30
Wind tunnel tests of stability and control characteristics of large scale model representative of propeller-driven STOL transport aircraft
Elastic shells of revolution displacement analysis, using incremental variational theory with finite element method
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Instrument for nondestructively measuring compression resistance of spray foam used as thermal insulation was developed. Cylindrical indicator has probe with coil spring to provide force and indicating dial. Probe is manually pressed against area to be tested until complete foot area contacts foam surfaces.
Phase 2 (development) which was concluded for the ultrasonic Doppler device and the light-pipe-reflectance device is reported. An ultrasonic Doppler breadboard system was assembled which accurately measured runout in the J-2 LOX pump impeller during operation. The transducer was mounted on the outside of the pump volute using a C-clamp. Vibration was measured by conducting the ultrasonic wave through the volute housing and through the fluid in the volute to the impeller surface. The impeller vibration was also measured accurately using the light-pipe probe mounted in an elastomeric-gland fitting in the pump case. A special epoxy resin developed for cryogenic applications was forced into the end of the fiber-optic probe to retain the fibers. Subsequently, the probe suffered no damage after simultaneous exposure to 2150 psi and 77 F. Preliminary flash X-radiographs were taken of the turbine wheel and the shaft-bearing-seal assembly, using a 2-megavolt X-ray unit. Reasonable resolution and contrast was obtained. A fast-neutron detector was fabricated and sensitivity was measured. The results demonstrated that the technique is feasible for integrated-time measurements requiring, perhaps, 240 revolutions to obtain sufficient exposure at 35,000 rpm. The experimental verification plans are included.