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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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Ionization vacuum gage with a switch-operated starting device and a microammeter begins functioning quickly in a high vacuum. The microammeter is also protected by its circuit design from spurious currents.
Self-starting multistep methods for numerical integration of ordinary differential equations
Electrodeless discharge borosilicate glass lamp is used in various high-resolution optical systems. It is partially charged with krypton, contains small amounts of rubidium, and is enclosed in a hermetically sealed envelope that maintains the lamp at an optimum temperature during discharge. The lamp is quickly started by its excitation coil.
Remote method initiates an electric arc over a large range of gaps between two water-cooled electrodes of an arc-heated wind tunnel without disassembling the arc unit. This type of starting system can be used on both three-phase ac arc heaters and dc arc heaters.
Power arc welder formed as a hand-held welding gun touch-starts, retracts a consumable electrode to create the desired arc, and then commences feeding of the consumable electrode at the rate required to form the intended bead or spot. This device achieves uniform spot welds repeatedly.
Gas pressurized, liquid bipropellant injection feed system starting flow transient criteria - effects on combustion stability
Starting salaries of engineers and scientists - patterns of demand affecting changes in salary since World War II
Optimal free-space fixed thrust trajectories using impulsive trajectories as starting iteratives
Random noise effects and optimal control of nuclear rocket start-up for rapid and precise attainment of full power
Optimal free-space fixed thrust trajectories using impulsive trajectories as starting iteratives
Multiple start-stop solid propellant rocket motor using highly aluminized ammonium perchlorate annular propellant grains
Experimental evaluation of gas injection start of Brayton cycle turbocompressor operating on gas bearings
Schematic is provided on a self-starting circuit for a switching regulator which uses a logic circuit to sense a change in output voltage and provides a correction signal for dc power sources. With this device, the total power consumed by the logic circuitry is held to a minimum, and the circuit receives the optimum regulated supply power.
Method which calculates start-up characteristics of centrifugal pumps reveals a capacity to predict pressure drop characteristics of pumps with vaned diffusers. Calculations are based on pump geometry, design-point flow, speed, and pressure rise, and the pump characteristic within range of approximately ten percent of the design-point flow.
Main impulse fields of magnetic storm sudden starts near local absorption region of cosmic radio noise in ionosphere
Factors affecting injection starts of closed-loop single-shaft Brayton power plant
Motor starting characteristics of two inductor alternators
Flow field of impulsively started circular cylinder, noting drag due to nonlinear convection