Adhesion force analysis for prevention of particle resuspension in multiplexed inertial coalescence filters
Explore the source record for details and available documents.
Rawand M. Rasheed↗
SEARCH · Search NASA
Results for “preventative”
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Modified filter prevents conduction of microwave signals along high-voltage power supply leads
Very lossy powdered iron material, in the lining of a polyester resin, replaces the dielectric material in the short coaxial transmission line of a simple filter. The lossy material absorbs microwave signals along high voltage power supply leads.
Mathison, R. P.↗
Hot-air soldering technique prevents overheating of electrical components
By using a hot-air gun with a small orifice, heat may be localized to the soldering area of the chassis. The solder is placed around the capacitor which is inserted in the mounting hole so the ring is in contact with the chassis.
Source record↗
Test device prevents molecular bounce-back
A test device, which consists of six pyramidal reflectors joined together, acts as a baffle to impede the free path of the molecule to the test item by interposing a slanted surface which imparts an angular vector to the molecule and bounces it back to the chamber wall.
Hardgrove, W. F.↗
A DEVICE FOR THE HUMIDIFICATION OF INSPIRED DRY OXYGEN AND THE PREVENTION OF HYPERVENTILATION RESEARCH
Explore the source record for details and available documents.
Bartlett, R. G.↗
Instrument adjustment knob locks to prevent accidental maladjustment
A device, incorporating a collar with a hexagonal opening which fits snugly over a hexagonal nut used to engage instrument panel components, keeps the adjustment knob locked. A quick release mechanism frees the knob for rotational adjustment.
Source record↗
Safety restrainer prevents whipping of ruptured high-pressure hose
The braid at each end of a standard electric cable puller is modified to reinforce high pressure, flexible, fluid transfer hoses. This safety device acts as a restraint if the line ruptures.
Thompson, W. E.↗
Hydraulic drive system prevents backlash
Hydraulic drive system uses a second drive motor operating at reduced torque. This exerts a relative braking action which eliminates the normal gear train backlash that is intolerable when driving certain heavy loads.
Acord, J. D.↗
Keyed plugs and sockets prevent improper connections
Plugs and sockets individually keyed so that no plug can be mated with other than its proper socket facilitates multiple connection in electrical systems.
Buckey, D. L.↗
An Emergency Helium Bubbling Control System for the Prevention of Geysering in the Lox Suction Lines of S-IC
An emergency helium bubbling system was devised for geyser suppression in the LOX suction lines of S-IC . Flight model pressure and temperature transducers were compared to more accurate transducers to determine the best sensor configuration. Transducers were electronically simulated to calibrate the circuit design. A development system was tested for feasibility on a full- scale LOX flow line test facility.
BUBBLE↗
Quality control and nondestructive testing for the prevention of failures in scientific satellites.
Quality control and nondestructive testing of scientific satellite components stressing adequate standards and contractor responsibility
SPACECRAFT RELIABILITY↗
Nylon shock absorber prevents injury to parachute jumpers
Nylon shock absorbers reduce the canopy-opening shock of a parachute to a level that protects the wearer from injury. A shock absorber is mounted on each of the four risers between the shroud lines and the harness. Because of their size and location, they pose no problem in repacking the chute and harness after a jump.
Mandel, J. A.↗
Aluminum oxide filler prevents obstructions in tubing during welding
Granular aluminum oxide is used as filler in serpentine tubing while welding the tubing to a flat surface. The filler eliminates obstructions in the tubes formed by molten weld nuggets and is porous enough to allow gases to escape from the welding area.
Okelly, K. P.↗
Key-locked guard prevents accidental switch actuation
Switch guard, which locks in place on a panel, protects individual switches from accidental activation. The guard consists of a cup to cover the switch lever, a standard screw lock tumbler, and a stud that mates with a threaded adapter in the panel.
Hawthorne, K. C.↗
Fiber length and orientation prevent migration in fluid filters
Stainless steel fiber web filter resists fiber migration which causes contamination of filtered fluids. This filter is capable of holding five times more particulate matter before arbitrary cutoff pressure drop and shows excellent retention in fuel flow at high rates.
Reiman, P. A.↗
Electronic bidirectional valve circuit prevents crossover distortion and threshold effect
Four-terminal network forms a bidirectional valve which will switch or alternate an ac signal without crossover distortion or threshold effect. In this network, an isolated control signal is sufficient for circuit turn-on.
Kernick, A.↗
One-count memory circuit prevents machine mode interaction
One-count memory logic circuit used with electromechanical counter-printer machines operates in either count or print mode. The circuit advances the counter when the machine is in the count mode and provides storage for the count pulse when the machine is in the print mode.
De~forest, B.↗
Effectiveness of aluminum honeycomb shields in preventing meteoroid damage to liquid- filled spacecraft tanks Final report
Aluminum honeycomb spacecraft shielding for protection against meteoroid impact damage
Source record↗