F region photochemical nightglow emissions.
Bates theory of atomic oxygen excitation in upper atmosphere as cause of F layer nightglow emissions
NIGHT IONOSPHERE↗
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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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Determination of rates of production and loss of electrons in the F region of the ionosphere from observations of geostationary satellite transmissions
Rates of production and loss of F region electrons determined from VHF telemetry transmissions from geostationary satellite
Smith, F. L., III↗
Maintenance of the tropical night-time F layer.
Tropical night F layer maintenance mechanism, noting airglow enhancement and ionization source association with plasma drifts
Brown, W. E.↗
Electron production and loss rates in the F region.
Electron production and loss rates in F region from measurements of Faraday rotation imposed on VHF telemetry transmissions from geostationary satellite
Smith, F. L., III↗
Electron-spin memory in the optical-pumping cycle of F centers in alkali halides and electron-spin resonance of the relaxed excited state.
Electron spin memory in optical pumping cycle of potassium halides F centers, measuring relaxed excited state g factors and spin resonance line widths
Mollenauer, L. F.↗
Analysis of broken plane trajectories for the Pioneer-F mission
Analysis of broken plane trajectories for Pioneer F mission
Teren, F.↗
RTCC requirements for missions E, F, and G - Greenwich hour angle formulation for the predictor
Computing hour angle from mean equinox at beginning of nearest Besselian year to Greenwich meridian for RTCC predictor for Apollo Missions E, F, and G
Flanagan, P. F.↗
Analysis of in-flight pressure fluctuations leading to engine compressor surge in an F-111A airplane for Mach numbers to 2.17
F-111A airplane in-flight inlet pressure fluctuations for engine compressor surge, discussing average turbulence factor
Burcham, F. W., Jr.↗
Analysis of broken plane trajectories for the Pioneer-F mission
Pioneer-F Jupiter flyby mission planning, considering use of optimum broken plane trajectories to increase launch opportunity and/or payload capability
Teren, F.↗
Comparison of radar and optical temperature measurements in the F region
F region radar and optical temperature measurements, discussing Doppler and backscatter ion temperature
Evans, J. V.↗
OGO-F-06 ion mass spectrometer Final report, Mar. 1966 - Jun. 1970
Design, test evaluation, and performance failure analysis of ion mass spectrometer for OGO-F
Hanson, W. B.↗
An investigation of two variations of the gas generator method to calculate the thrust of the afterburning turbofan engines installed in an F-111A airplane
Two variations of gas generator method to calculate thrust of afterburning turbofan engines installed in F-111A aircraft
Burcham, F. W., Jr.↗
Equatorial spread F - Implications of vhf radar observations
VHF radar measurements of scattering by field aligned irregularities associated with equatorial spread F
Balsley, B. B.↗
Source and identification of heavy ions in the equatorial F layer.
Further evidence is presented to show that the interpretation of some Ogo 6 retarding potential analyzer (RPA) results in terms of ambient Fe+ ions is correct. The Fe+ ions are observed only within dip latitudes of plus or minus 30 deg, and the reason for this latitudinal specificity is discussed in terms of a low-altitude source region and F region diffusion and electrodynamic drift. It is shown that the polarization field associated with the equatorial electrojet will raise ions to 160 km out of a chemical source region below 100 km but it will do so only in a narrow region centered on the dip equator. Subsequent vertical ExB drift, coupled with motions along the magnetic fields, can move the ions to greater heights and greater latitudes. There should be a resultant fountain of metallic ions rising near the equator that subsequently descends back to the E and D layers at tropical latitudes.
Hanson, W. B.↗
High frequency fatigue testing of Udimet 700 at 1400 F
An investigation pertaining to the development of life prediction methods for materials subjected to high temperature creep/fatigue conditions is presented. High frequency (13.4 kHz) fatigue data were measured at 1400 F on specimens of the nickel-based alloy Udimet 700. Tests were conducted on the virgin material, as well as on specimens which had received prior exposures to high temperature, fatigue, and creep.
Conn, A. F.↗
System design of the ATS-F RFI measurement experiment.
Description of the system design of an RFI measurement experiment regarding optimal sharing of the 5.925- to 6.425-GHz frequency band between the ATS-F synchronous satellite and terrestrial telecommunication systems. The parametric measurements made will include transmitted and received power levels, propagation-path loss and variations as a function of range, elevation angle, RF polarization, and geographical location of interference sources. The technical objectives of the C-band RFI experiment are outlined, a functional diagram of the total system for the RFI measurement experiment is presented, and the design features of the receiver RF and IF circuits, the filters and detectors, and the computer control are summarized. A basic RFI measurement plan is presented which defines and briefly states the measurement procedure, which involves a number of different measurement modes, each of which is described in detail.
Henry, V. F.↗
Observations of the inner F and K coronas below 2220-A wavelength.
The inner coronal continuum has been observed and measured below 2220 A on the slitless spectra obtained by Speer et al. (1970) at the March 7, 1970 eclipse. These observations set some constraints on the brightness of the inner F corona and hence on the scattering efficiency of the inner interplanetary dust cloud particles in the far ultraviolet. They neither confirm nor reject the possibility that the inner dust cloud has the same sharp upturn in scattering efficiency below 2220 A observed in the zodiacal light and in the interstellar medium.
Orrall, F. Q.↗
The ATS-F radio frequency interference measurement experiment
The technical objectives of the uplink interference tests and measurements to be performed during this experiment are set forth as the determination of the integrated interference power from all 6-GHz terrestrial sources sharing the common carrier band with the RF field of view of the ATS-F satellite; the establishment of practical limits of receiver antenna gain-to-noise temperature ratios for satellites sharing the common 6-GHz carrier band; and the determination of the geographical and frequency distribution of 6-GHz terrestrial sources sharing the common carrier band. A brief description of the RF interference measurement system with some details on its hardware and subsystems is included. The performance characteristics of the mission and a measurement program are discussed.
Henry, V. F.↗