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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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Attitude errors of inertially coupled gravity gradient satellite with solar radiation pressure as dominant disturbance, noting slot problems in stabilized package accommodating damper motion
Adjustable tool facilitates the installation of Marmon clamps. It provides sufficient mechanical advantage to force the clamps into place, permitting one man operation. Two handles provide the major leverage, and a pivoting arm with a slot enables snap-out action.
Pneumatic impact wrench removes the nuts from freely turning bolts when the heads cannot be reached or the shafts anchored. It uses a fixed screwdriver blade that fits a slot cut into the threaded end of the bolt shaft.
Standard surface grinder performs precision machining of thin-wall stainless steel tubing by electrical discharge grinding. A related adaptation, a traveling wire electrode fixture, is used for machining slots in thin-walled tubing.
Increased turbine rotor blade loading through use of boundary layer control devices - vortex generator, tangential slot blowing, tandem airfoil, and jet flap
Theoretical study of plate thickness effect on bending stress distribution around slotted cracks
Surface wave pole contribution to admittance of rectangular waveguide-fed slot into dielectric slab
Attitude errors of inertially coupled gravity gradient satellite with solar radiation pressure as dominant disturbance, noting slot problems in stabilized package accommodating damper motion
Detector flake located parallel to a slotted mask mechanical differentiator, senses the rotation of a gimballed reaction wheel mounting. As the gimbal moves light passes through the mask and strikes a section of the detector, the electrical output of which has been calibrated in terms of degrees of rotation.
Plasma effects in antenna near zone field - admittance and ionization rise time measurements on Teflon-plugged waveguide slot antenna
Multiple circular-arc slotted stator for transonic speed operation
Solid propellant grain design and charge configuration, reviewing dendrite, wagonwheel, star, slotted, conocyl and finocyl grains
Standard crescent wrench has been modified to provide a means whereby one adjustable tool can be used with all sizes of electronic connectors. The machined wrench jaws provide lugs for engaging the standard size slots on the different connectors.
Computer program gives blade-to-blade solution of the two-dimensional, subsonic, compressible, nonviscous flow problem for a circular or straight infinite cascade of tandem or slotted turbomachine blades. The method of solution is based on the stream function using iterative solution of nonlinear finite-difference equations.
Coupling device enables a rigid shaft to be connected to or disconnected from a fixed base without disturbing the point of adjustment of the shaft in a socket or causing the shaft to rotate. The coupling consists of an externally threaded, internally slotted boss extending from the fixed base.
Scanning array was designed with properties of low RF loss and phase control. The array consists of a series of special waveguides, hybrids made up of two variable reactance branch arms for input signals, an edge slot for the difference port, and a sum arm for the unradiated signal.
Slots sitting astride the virtual wall in a multimode wave guide can be used for generation of one component of a circularly polarized beam. There is a high degree of efficiency without the use of a slow-wave structure.
Thirty-six element square array, with mutual coupling between crossed slots for array elements, is used as an electronically scanned tracking antenna. The system does not require the movement of the antenna or the presence of an operator.