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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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Environmental problems for space-vehicle systems, such as dynamic response during the launch phase, meteoroid impact, space radiation, and atmospheric reentry heating
The results of an experimental investigation of the effectiveness of various isolation and damping methods in reducing the dynamic response of simplified scaled models of the Nimbus spacecraft to vibratory inputs are presented. Experimental mode shapes and natural frequencies of the simulated solar panels were determined and found to compare well with calculated values. Appreciable reductions of structural responses to vibratory-input motions were measured for independent inputs along the roll, pitch, and yaw axes for the cases in which distributed damping and/or isolation was utilized. A comparison of the response of the model with the full-scale spacecraft for inputs along the pitch axis is presented. Also included are the effects of stiffness between the control and sensory sections on the response of the model to vibratory inputs.
Two-phase hydrogen density measurement in propulsion systems using dynamics response of neutron attenuation to transient flow
Study of resonant oscillations of an ideal fluid in a cylindrical tank is used to obtain a better understanding of fuel sloshing in large liquid booster. More realistic structural design criteria may be formulated when the dynamic response of the liquid in a cylindrical tank can be predicted analytically.
Digital computer program determines the dynamic response of circular cylinders subjected to pressure transient forms commonly encountered in propulsion systems. The method can be readily used to obtain solutions for all possible combinations of admissible boundary conditions.
Dynamic response of liquids during vertical excitation of propellant tanks
Fatigue failure analysis in small metallurgically- bonded joints in very small electronic components, using statistical analysis of random forces and dynamic response of member
Space vehicle and control system dynamic response to atmospheric disturbances
Peripheral and central adaptive dynamic response characteristics of human operator in manual control situations
Numerical integration technique for determining dynamic response of rectangular plates and cylindrical shells subjected to stationary and constant velocity loads
Reliable control systems with satisfactory dynamic response for launch vehicles
Launch vehicle flight control system and relation to stability requirements and dynamic responses
Dynamic responses of cylindrical shells under axisymmetric surface tractions, solving free vibration problem
Axisymmetric dynamic response of hemispherical shells under arbitrary loading formulated using elastic bending theory
F-111A and XB-70A aircraft instrumentation systems used to investigate dynamic response within air breathing propulsion systems of supersonic aircraft
Dynamic response of initially stressed inflatable thin membrane shells
Statistical analysis of influencial aspects of wind profile disturbances design and dynamic response of space vehicles
Effects of lateral cable oscillations on dynamic response of cable-connected space station