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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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Observations of Van Allen radiation regions by Explorer VI satellite - differential energy spectrum for trapped protons in inner belt
Observations of Van Allen radiation regions by Explorer VI satellite - charged particle variations, scintillation counter data, and other particle counter information
Properties of Van Allen outer radiation belt determined by ion chamber and Geiger counter instruments aboard Explorer VI satellite
Observations of Van Allen radiation regions by Explorer VI satellite - trapped energetic electrons in outer belt
Observations of Van Allen radiation regions by Explorer VI satellite - Capetown anomaly and shape of outer belt, particle trajectories, and neutron albedo decays
An integrating ionization chamber and a single Geiger counter were flown on United States satellite Explorer VI in an elliptical orbit extending to 48,000 km. In addition to the Van Allen inner zone and the great outer zone, a stable and distinct intermediate zone was detected throughout August and September 1959. The outer-zone intensity showed a large decrease following the sudden commencement of a geomagnetic storm. Later in the storm the outer zone increased to much in excess of its prestorm level. During stable periods the outer zone was fairly constant and less intense than it had been observed to be with Pioneer III or Pioneer IV or the first Soviet cosmic rocket. Cosmic-ray background counting rates were reached on most passes in August and Septmeber near apogee of the satellite. The radiation ?dumped? from the outer zone during the geomagnetic storm fits very well with the intensity and latitude distribution required to account for balloon observations of auroral X rays made during the IGY period. This paper is based on preliminary analysis of Explorer VI data.
Problems relating to the influence of lunar and solar perturbations on the motion of artificial satellites are analyzed by an extension of Cayley's development of the perturbative function in the lunar theory. In addition, the results are modified for incorporation into the Hansen-type theory used by the NASA Space Computing Center. The theory is applied to the orbits of the Vanguard I and Explorer VI satellites, and the results of detailed computations for these satellites are given together with a physical description of the perturbations in terms of resonance effects.
Correlation of variations of explorer vi count rates with simultaneous visual auroras and high- altitude x-ray bursts
Characteristics of extraterrestrial ring current system observed by Explorer VI and Pioneer V satellites
Low-frequency hydromagnetic waves in geomagnetic field - data obtained from magnetometer, aspect indicator and scintillation counter on explorer 6 satellite
Explorer vi and pioneer v data reduction and analysis
Van allen belt in august and september 1959 - properties of outer belt measured by explorer vi
Analysis of explorer vi & pioneer v data on radiation belts & geomagnetic field
Explorer vi and pioneer v data reduction and analysis
The orbit of explorer vi - a test of the dynamic model atmosphere
Since September of 1956, nine Jupiter-C missiles have been launched from the firing pad at Cape Canaveral. The first Jupiter-C firing tested the propulsion system, air frame, and guidance components of the missile, and the second and third firings tested a model of the Jupiter nose cone under realistic re-entry conditions. The remaining six Jupiter-C missiles were used as the launching vehicles for EXPLORER satellites I through VI (Fig. 1). Of the six satellite firings, EXPLORERs I, III, and IV achieved satisfactory orbits. The Jupiter-C missile was designed and developed as a joint program under the technical direction of the Jet Propulsion Laboratory and the Army Ballistic Missile Agency. The Jet Propulsion Laboratory developed the three high-speed stages, and the Army Ballistic Missile Agency handled the development, construction, and operation of the first-stage booster rocket and the guidance system. Many other organizations have contributed to the success of the EXPLORER satellite program, most notably the State University of Iowa, the Air Force Cambridge Research Center, and the satellite tracking teams of the Vanguard organization.
Method of determining the definitive orbit of a satellite affected by drag, and test of model atmosphere using explorer vi orbit