Space shuttle electric power distribution considerations
Space shuttle electric power distribution system design and development
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Space shuttle electric power distribution system design and development
NASTRAN computer program used to calculate lateral deflections of weak spacecraft antenna boom to determine stiffness at small strains
Design, development, and characteristics of open cycle, gas core nuclear rocket engine
Comparison of logistics problems and cost aspects in selection of aircraft for earth resources surveys
N-port networks interconnection by NASAP-70 transfer function capability for large scale circuit problems, considering Laemmel and Cascade Parameter methods
Laboratory test set for integration of data compression and error correction encoding of digital communications system
Error correction coding/decoding techniques integration, discussing convolutional and block coding and Viterbi, Sequential and Threshold decoding algorithms
Hadley Rille origin as lava channel and partly collapsed lava tube, taking into account topographic configuration, terrestrial analogs, geomorphology and meteoroid bombardment
Jet transport aircraft stability and controllability under atmospheric turbulence conditions, discussing longitudinal and lateral- directional characteristics with particular attention to unstable spiral mode
Orbital nonpropulsive vent system to remove excess or residual propellant vapors and waste gases with minimum impulse imbalances imparted to vehicle
Safe disposal for nuclear zirconium hydride reactors for manned space base mission
Milky Way galaxy poloidal magnetic field generation with hydromagnetic dynamos, showing galactic cosmic rays as major driving force
Statistical phase space cross sections for helium ion-nitrogen molecule reactions, including dispersion and short range forces in intramolecular potential energy function
Apollo 11 and 12 lunar rocks and soil chemical composition, considering petrogenesis and major and trace elements abundance
The preceding papers have discussed the aerodynamics and heating of several vehicles designed for atmospheric reentry from satellite orbits. Because of large heating inputs, some fundamental questions about the structure of these vehicles are also raised. Although there are many factors which influence structural design, only a brief examination of the relationship between heating input and structural weight is discussed here. For this purpose the heating inputs associated with the four vehicles shown in figure 1 are employed.
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Target signal requirements for aircraft navigation systems that use radiometric receivers which map thermally emitted power radiated by terrain or power radiated by ground-based beacons are discussed. For selected millimeter wavelength bands, microwaves suffer relatively little degradation by absorption or scattering on passage through the atmosphere, despite extreme weather variations. Interest centers on 8-millimeter waves because of component availability, portability (small size), high image resolution, and all-weather capability at this wavelength. The idea of radiometric airborne navigation is introduced. Elements of radiometry, terrain radiation, and atmospheric transmission characteristics are reviewed. Data pertaining to these elements at 8 mm wavelength are collected. Calculation of radiometric contrasts is discussed for some simple models of terrain targets.