Engineering topics

Eggers, A. J., Jr.

Publications and source records attributed to Eggers, A. J., Jr..

13 records

NASA NTRS1990

Hypersonic waverider configurations from the 1950's to the 1990's

The conceptual evolution of waverider configurations and their applications to hypersonic air vehicles are examined in the context of evolving mission requirements and technological advances. The fundamental objective of employing configurations which tend to maximize the payload fraction is emphasized, and the achievement of this objective over the time period of interest is reviewed, starting with high drag ballistic vehicles through low lift-drag ratio lifting bodies to the revived interest in high lift-drag ratio configurations. Practical applications of research in the area of lifting waveriders are discussed with particular reference to the B-70 Valkyrie and the Space Shuttle.

Eggers, A. J., Jr.↗

NASA NTRS1973

Progress and problems in atmosphere entry

Explore the source record for details and available documents.

Eggers, A. J., Jr.↗

NASA NTRS1970

Hypersonic aircraft technology and applications

Hypersonic aircraft technology, discussing long range transport, reusable launch vehicles and propulsion systems

Cohen, N. B.↗

NASA NTRS1967

Lifting entry vehicles for future space missions.

Lifting entry vehicles requirements for near earth and planetary missions, noting four thermal protection systems

THERMAL PROTECTION↗

NASA NTRS1966

Lifting entry vehicles for future space missions.

Lifting requirements of entry vehicles for near- earth planetary missions

PLANETARY ENTRY↗

NASA NTRS1966

Flight craft Patent

Designing spacecraft for flight into space, atmospheric reentry, and landing at selected sites

Edwards, G. G.↗

NASA NTRS1966

Progress and problems in atmosphere entry.

Theoretical and experimental work in flow field analysis has enhanced ability to predict aerodynamic heating in atmospheric entry

REENTRY PHYSICS↗

NASA NTRS1965

Progress and problems in atmosphere entry.

Theoretical and experimental work in flow field analysis has enhanced ability to predict aerodynamic heating in atmospheric entry

REENTRY PHYSICS↗

NASA NTRS1965

Progress and problems in atmosphere entry

Progress and problems in atmospheric entry for manned and unmanned planetary probes - reentry physics

REENTRY PHYSICS↗

NASA NTRS1965

Nonslender bodies of revolution having minimum pressure drag.

Nonslender bodies of revolution with minimum pressure drag, noting derivation of minimizing curves for Newtonian flow

SUPERSONIC FLOW↗

NASA NTRS1963

SOME GENERAL CONSIDERATIONS OF MANNED LUNAR RETURN MISSIONS

Manned lunar return mission planning, discussing the utilization of one space vehicle or two for the lunar orbit rendezvous and return phases

LUNAR FLIGHT↗

NASA NTRS1955

Experimental Investigation of a Body Flare for Obtaining Pitch Stability and a Body Flap for Obtaining Pitch Control in Hypersonic Flight

Aircraft body flare for pitch stability and body flap for pitch control in hypersonic flight

AIRCRAFT CONFIGURATION↗

NASA NTRS1953

A Study of the Motion and Aerodynamic Heating of Missiles Entering the Earth's Atmosphere at High Supersonic Speeds

A simplified analysis is made of the velocity and deceleration history of missiles entering the earth's atmosphere at high supersonic speeds. It is found that, in general, the gravity force is negligible compared to the aerodynamic drag force and, hence, that the trajectory is essentially a straight line. A constant drag coefficient and an exponential variation of density with altitude are assumed and generalized curves for the variation of missile speed and deceleration with altitude are obtained. A curious finding is that the maximum deceleration is independent of physical characteristics of a missile (e.g., mass, size, and drag coefficient) and is determined only by entry speed and flight-path angle, provided this deceleration occurs before impact. This provision is satisfied by missiles presently of more usual interest.

Allen, H. Julian↗