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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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Electromechanical drag balance device measures the aerodynamic drag force acting on a vehicle as it moves through the atmosphere and telemeters the data to a remote receiving station. This device is also used for testing the hydrodynamic drag characteristics of underwater vehicles.
Flexible tube inserted into a 3/4-round strip receptacle inflates to form an airtight material fastener. Inflation is done with a carbon dioxide cartridge and deflation by a manually operated release valve. Device has potential use in space suits, underwater suits, and other protective clothing.
System to locate objects submerged underwater uses active/passive sonar techniques in which a transmitter is attached to the object to be recovered and a receiver is used for search. The system is rugged, has a long term operating life, and furnishes a precise bearing on the object.
Infrasonic and hydromagnetic wave propagation in atmosphere and ionosphere measured by array of underwater and acoustic sensors
Sinusoidal pressure generator for catheter manometer systems calibration by driving underwater loudspeaker with oscillograph power amplifier
Tool mitten provides a low reaction torque source of power for wrench, screwdriver, or drill activities. The technique employed prevents the attachments from drifting away from the operator. While the tools are specifically designed for space environments, they can be used on steel scaffolding, in high building maintenance, or underwater environments.
Weightlessness simulation of Gemini extravehicular tasks using neutral-buoyancy underwater techniques
Underwater sand height gage, which measures heights up to 12 inches, is comprised of two standard flush-diaphragm pressure transducers. Gage is very sensitive to buried water heights and is useful as a research tool in study of wet earth and landslide phenomena.
Underwater tests of prototype construction of selected mobility and restraint device
Bolt installation and removal tool for space stations and underwater use
Kalman filtering applications in space navigation, underwater operations, surface navigation, and Gauss-Markov processes
Surface interval providing safety against decompression sickness between underwater weightlessness simulation and flight altitude ascent
Underwater saturation habitats application as behavioral workshops for mission planning and human engineering of manned space flight, discussing Project Tektite
Tektite I marine laboratory underwater mission in marine biology and geology
Method reduces required saturation time from three days to six hours and also reduces required decompression time. Waiting time for planning underwater research is therefore reduced, and emergency surfacing is possible.
System connects seven observers, diver, and spare station, and utilizes public address system with underwater speakers to provide two-way communications between test subject and personnel in control of life support, so that test personnel are warned immediately of malfunction in pressure suit or equipment.
NASA program for evaluating underwater vehicle crew performance as space station operational analog
Cryogenic underwater life support system for supplying breathing gas to buoyancy test subjects in submerged vehicle