The gust and draft velocities from records of NACA instruments installed in P-61C airplanes participating in thunderstorm flights at Clinton County Army Air Field, Ohio, from June 2, 1947 to June 7, 1947, are presented.
Topic: NASA Technical Reports Server (NTRS)
The NACA is conducting a general investigation of servo-mechanisms for use in powering aircraft control surfaces. This paper presents a theoretical analysis and the results of bench tests of a control-booster system which employs a variable displacement hydraulic pump. The booster is intended for use in a flight investigation to determine the effects of various booster parameters on the handling qualities of airplanes. Such a flight investigation would aid in formulating specific requirements...
Topic: NASA Technical Reports Server (NTRS)
Man-machine system simulation for flight vehicles
Topic: NASA Technical Reports Server (NTRS)
Topic: NASA Technical Reports Server (NTRS)
We first undertook experiments with air, devoted principally to the investigation of the disturbances due to the differences in the nature of the flow to the nozzle. The difficulty of measuring the air, however, caused us to experiment with water. Due to the possibility of measuring the capacity of the container, this method was much more accurate than measuring with Pitot tobes.
Topic: NASA Technical Reports Server (NTRS)
Topic: NASA Technical Reports Server (NTRS)
Topic: NASA Technical Reports Server (NTRS)
Flow across tube banks was investigated by surveys of total dynamic and static pressure by visualization of the flow through the use of titanium tetrachloride smoke, by thermocouple surveys of heated tubes, and by hot-wire surveys of both heated and unheated tubes. It was found that turbulence increased as the depth of the bank increased and that the broad wake behind each tube affected flow over the succeeding tubes.
Topic: NASA Technical Reports Server (NTRS)
Topic: NASA Technical Reports Server (NTRS)
Topic: NASA Technical Reports Server (NTRS)
Topic: NASA Technical Reports Server (NTRS)
Effect of distributed boundary-layer suction on operating pressure ratio of a supersonic wind tunnel was investigated. Investigation was made in 3.84- by 10-inch supersonic tunnel operating at Mach number 2.0 and suction was applied in neighborhood of the normal shock to two walls of a constant-area extension of test section. A reduction of 4 percent of operating pressure ratio was attributed to improved flow conditions at subsonic-diffuser inlet. The theoretical normal shock was, in practice,...
Topic: NASA Technical Reports Server (NTRS)
Topic: NASA Technical Reports Server (NTRS)
Topic: NASA Technical Reports Server (NTRS)
Topic: NASA Technical Reports Server (NTRS)
Cameo - computer-independent abstract machine- language encoder and operating system
Topic: NASA Technical Reports Server (NTRS)
Red line of atomic oxygen in day airglow
Topic: NASA Technical Reports Server (NTRS)
Vertical radio frequency test range for antenna radiation measurement
Topic: NASA Technical Reports Server (NTRS)
Cameras for manned space flight and lunar photography
Topic: NASA Technical Reports Server (NTRS)
Tables of x-coefficients and lambda-factors for triple angular correlation measurements in nuclear reaction studies
Topic: NASA Technical Reports Server (NTRS)
Description and operation of spacecraft in space electric rocket test /sert/ thrustor flight test
Topic: NASA Technical Reports Server (NTRS)
Rotational invariance of maxwell vector equations
Topic: NASA Technical Reports Server (NTRS)
The curve of the inner walls of a superconducting cylinder is plotted from the flux lines of the magnetic field to be contained. This shaping reduces maximum flux densities and permits a stronger and more uniform magnetic field.
Topic: NASA Technical Reports Server (NTRS)
A conical-walled valve plug is designed to seal against a recessed spherical valve seat. This insures proper sealing during numerous seating cycles even though the valve stem is misaligned or forced out of its proper axis.
Topic: NASA Technical Reports Server (NTRS)
A low-cost fitting, fabricated from standard connectors, is used for disconnecting flow lines in cryogenic systems. Utilizing vacuum-jacketed lines made from two sizes of tubing welded at the ends, the connectors are stronger and setup time is reduced.
Topic: NASA Technical Reports Server (NTRS)
Elastic, pressure-sensitive orifice is used to automatically regulate the rate of gas flow into bearings under varying loads. Formed of a molded elastomer, theses orifices increase the stability of gas bearings.
Topic: NASA Technical Reports Server (NTRS)
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.
Topic: NASA Technical Reports Server (NTRS)
From accurate scale drawings of a model, photographic negatives of the cross sections are printed on thin sheets of aluminum. These cross-section images are cut out and mounted, and mahogany blocks placed between them. The wood can be worked down using the aluminum as a built-in template.
Topic: NASA Technical Reports Server (NTRS)
A bridge circuit giving an adjustable output voltage that varies linearly with temperature is formed with temperature compensating diodes in one leg. A resistor voltage divider adjusts to temperature range across the bridge. The circuit is satisfactory over the temperature range of minus 20 degrees centigrade to plus 80 degrees centigrade.
Topic: NASA Technical Reports Server (NTRS)
A contoured shell for restraining animals is made by thermoforming plastic over the anesthetized, frozen specimen. It may be vented, or pieces may be cut out to facilitate working in localized areas.
Topic: NASA Technical Reports Server (NTRS)
Performance of a sealed-silver cadmium battery on explorer xii
Topic: NASA Technical Reports Server (NTRS)
Static stability and control characteristics of aircraft model with tail surfaces outboard of wing tips
Topic: NASA Technical Reports Server (NTRS)
Comparison of heat transfer rates to blunt bodies of revolution & evaluation of effects of body-nose geometry on heat transfer rates
Topic: NASA Technical Reports Server (NTRS)
Guidance of spacecraft approaching earth at supercircular velocities on desired perigee
Topic: NASA Technical Reports Server (NTRS)
Proportional navigation guidance systems - radar antenna positioning effects on speed of response
Topic: NASA Technical Reports Server (NTRS)
Lubrication characteristics of bearing steel in liquid oxygen in rocket engines
Topic: NASA Technical Reports Server (NTRS)
Wind tunnel investigation at subsonic & transonic speed of static aerodynamic and control characteristics of capsule-booster model
Topic: NASA Technical Reports Server (NTRS)
Radio-attenuation measurement /ram a1/ test, four- stage solid-propellant rocket vehicle - performance and design
Topic: NASA Technical Reports Server (NTRS)
Utilization of delta-wing interceptor aircraft in evaluation of low lift-drag ratios on approach and landing
Topic: NASA Technical Reports Server (NTRS)
Free flight aerodynamic heating data obtained from flat-faced cylinder at mach 10.9
Topic: NASA Technical Reports Server (NTRS)
Effect of stores on a swept-wing heavy bomber
Topic: NASA Technical Reports Server (NTRS)
Visual boundary for human perception of vertical rate of descent
Topic: NASA Technical Reports Server (NTRS)
Analysis of weight parameters influence on propulsion requirements of orbit-launched vehicles
Topic: NASA Technical Reports Server (NTRS)
Sighting problems associated with sextant type measurement of star position for space navigation
Topic: NASA Technical Reports Server (NTRS)
Effect of altimeter-system accuracy on aircraft collision probability
Topic: NASA Technical Reports Server (NTRS)
Survey of large space chambers - vacuum chambers to simulate space environment
Topic: NASA Technical Reports Server (NTRS)
Low frequency power spectrum of cosmic-ray variations during igy
Topic: NASA Technical Reports Server (NTRS)
Internal compression inlet with throat bleed-off at hypersonic flow
Topic: NASA Technical Reports Server (NTRS)
From mercury project to interplanetary manned space flight
Topic: NASA Technical Reports Server (NTRS)
Simultaneous missile launching - statistical analysis
Topic: NASA Technical Reports Server (NTRS)
