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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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At least 253 records · Page 14

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NASA NTRS1977

Analysis and compilation of missile aerodynamic data. Volume 2: Performance analysis

A general analysis is given of the flight dynamics of several surface-to-air and two air-to-air missile configurations. The analysis involves three phases: vertical climb, straight and level flight, and constant altitude turn. Wind tunnel aerodynamic data and full scale missile characteristics are used where available; unknown data are estimated. For the constant altitude turn phase, a three degree of freedom flight simulation is used. Important parameters considered in this analysis are the vehicle weight, Mach number, heading angle, thrust level, sideslip angle, g loading, and time to make the turn. The actual flight path during the turn is also determined. Results are presented in graphical form.

Burkhalter, J. E.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur Launch Vehicle flights. Volume 1: Acoustics data

The payloads carried by the first four Titan Centaur launch vehicle flights were, a Viking spacecraft dynamic simulator, the Helios A spacecraft, and the two Viking spacecraft. Dynamic loads data were accumulated from these four flights for application to the Viking spacecraft. The accoustics data include time histories and spectral analysis plots of accoustic pressure measurements made in the Centaur and payload compartment during launch flight. Summary plots are presented to show composite spectra for liftoff and Mach 1/Max Q periods of flight.

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur launch vehicle flights. Volume 2, part 1: Vibration power spectral density analysis of launch and max Q flight

Summary plots are presented for the time histories and power spectral density analyses of vibration and acceleration on the spacecraft from the Titan Centaur launchings carrying the Viking dynamic simulator and the two Viking spacecraft (TC-1, TC-3 and TC-4).

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur launch vehicle flights. Volume 2, part 2: Vibration power spectral density analysis of launch and max Q flight

Power spectral density plots and associated time history plots are presented for the Titan-Centaur launch carrying the Viking dynamic simulator.

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur launch vehicle flights. Volume 2, part 3: Vibration power spectral density analysis of launch and max Q flight

Power spectral density plots and associated time history plots are presented for the Titan-Centaur launch carrying the Viking A spacecraft.

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur launch vehicle flights. Volume 2, part 4: Vibration power spectral density analysis of launch and max Q flight

Power spectral density plots and associated time history plots are presented for the Titan-Centaur launch carrying the Viking B spacecraft.

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur Launch Vehicle flights. Volume 3, part 1: Shock spectra of transients

Time histories and shock-spectra of vibration and acceleration were obtained during the TC-1, TC-4 and TC-3 launch and staging events. Summary plots are presented and comparisons to Viking Program midfrequency sine test requirements are made.

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur Launch Vehicle flights. Volume 3, part 2: Shock spectra of transients

Shock spectra are presented for the TC-1 (Viking dynamic simulator) flight.

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur Launch Vehicle flights. Volume 3, part 3: Shock spectra of transients

Shock spectra are presented for the TC-4 (Viking A Spacecraft) flight.

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur launch vehicle flights. Volume 3, part 4: Shock spectra of transients

Shock spectra are presented for the TC-3 (Viking B Spacecraft) flight.

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur Launch Vehicle flights. Volume 4, part 1: Titan Stage 1 and Centaur First Burn oscillations

Time history and PSD data are presented showing the character of the first longitudinal mode oscillation which occurred during the Centaur first burn of the TC-4 and TC-3 flights.

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur Launch Vehicle flights. Volume 4, part 2: Titan Stage 1 and Centaur First Burn oscillations

Power spectral density plots of vibration and strain data are presented for the Titan stage 1 burn and the Centaur main engine first burn of the TC-4 flight (Viking A spacecraft).

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur Launch Vehicle flights. Volume 4, part 3: Titan Stage 1 and Centaur First Burn oscillations

Power spectral density plots of vibration and strain data are presented for the Titan stage 1 burn and the Centaur main engine first burn of the TC-3 flight (Viking B spacecraft).

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur launch vehicle flights. Volume 5, part 1: Time history plots

Extended time history plots are presented for the TC-1, TC-3, and TC-4 flights. Vibration, strain, acceleration, force, and moment data are included.

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur launch vehicle flights. Volume 5, part 2: Time history plots

For abstract, see N77-28193.

Kachadourian, G.↗

NASA NTRS1977

A compilation of spacecraft loads data from four Titan Centaur launch vehicle flights. Volume 5, part 3: Time history plots

For abstract, see N77-28193.

Kachadourian, G.↗

NASA NTRS1986

Remote sensing investigations of wetland biomass and productivity for global biosystems research

The relationship between spectral radiance and plant canopy biomass was studied in wetlands. Spectroradiometer data was gathered on Thematic Mapper wavebands 3, 4, and 5, and correlated with canopy and edaphic factors determined by harvesting. The relationship between spectral radiance and plant canopy biomass for major salt and brackish canopy types was determined. Algorithms were developed for biomass measurement in mangrove swamps. The influence of latitudinal variability in canopy structure on biomass assessment of selected plants was investigated. Brackish marsh biomass estimates were obtained from low altitude aircraft and compared with ground measurements. Annual net aerial primary productivity estimates computed from spectral radiance data were compiled for a Spartina alterniflora marsh. Spectral radiance data were expressed as vegetation or infrared index values. Biomass estimates computed from models were in close agreement with biomass estimates determined from harvests.

Klemas, V.↗

NASA NTRS1988

A compilation of information and data on the Manson impact structure

A problem for the impact hypothesis for the Cretaceous-Tertiary (K-T) mass extinction is the apparent absence of an identifiable impact site. The Manson Impact Structure is a candidate because it is the largest recognized in the U.S.; it is relatively close to the largest and most abundant shocked quartz grains found at the K-T boundary; and its age is indistinguishable from that of the K-T boundary based on paleontological evidence, fission track dates, and preliminary Ar-40/Ar-39 measurements. The region of northwest central Iowa containing the Manson Impact Structure is covered by Quaternary glacial deposits underlain by Phanerozoic sedimentary rocks (mostly flat-lying carbonates) and Proterozoic red clastic, metamorphic, volcanic, and plutonic rocks. In a circular area about 22 miles (35 km) in diameter around Manson, Iowa, this normal sequence is absent or disturbed and near the center of the disturbed area granitic basement rocks have been uplifted some 20,000 ft (6000m). Attention was drawn to Manson initially by the unusual quality of the groundwater there. Within the structure three roughly concentric zones of rock associations have been identified: (1) displaced strata; (2) completely disrupted strata, and igneous and metamorphic rocks. Manson was established as an impact structure based on its circular shape, its central uplift, and the presence of shocked quartz within the granitic central uplift. A gravity survey identified locations of low-density brecciated rocks and high-density uplifted crystalline rocks, but the outer boundary of the structure could not be established. Aeromagnetic and ground magnetic surveys showed locations and depths of shallowly buried crystalline rock and the locations of faults. A refraction seismic survey identified the crystalline central uplift, determined that the average elevation of bedrock is 70 ft (20 m) higher outside the structure than within, and was used to map the bedrock topography within the structure. A connection between the Manson impact and the K-T boundary may be established or refuted through study of the impact energy, the impact time, and composition of host rock, possible impactors, and impact melts.

Hartung, Jack B.↗