1959
DOI: 10.1115/1.4008217
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The Penetration of Planetary Atmospheres

Abstract: The problems of penetrating a planetary atmosphere are reviewed and techniques for penetration are discussed. These techniques are resolved into two general classes: (1) Gradual entry into the atmosphere with relatively low deceleration loads and heating rates low enough so that the heat may be rejected by thermal radiation from the surface; and (2) direct entry with higher deceleration loads and higher heating rates with the heat being absorbed by the body surface.

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Cited by 5 publications
(3 citation statements)
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“…An atmospheric scale height H 8.5 km and reference density ρ ref 1.215 kg∕m 3 at reference altitude h ref 0 km are assumed [22]. While the analyses presented in this work are restricted to Earth, Gazley has applied the Allen-Eggers solution to Mars and Venus with good results, indicating applicability at the terrestrial planets with atmospheres [23]. Further evaluation of the efficacy of the Allen-Eggers approximate solution at other planetary destinations is left for future investigation.…”
Section: Example Entry Trajectoriesmentioning
confidence: 99%
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“…An atmospheric scale height H 8.5 km and reference density ρ ref 1.215 kg∕m 3 at reference altitude h ref 0 km are assumed [22]. While the analyses presented in this work are restricted to Earth, Gazley has applied the Allen-Eggers solution to Mars and Venus with good results, indicating applicability at the terrestrial planets with atmospheres [23]. Further evaluation of the efficacy of the Allen-Eggers approximate solution at other planetary destinations is left for future investigation.…”
Section: Example Entry Trajectoriesmentioning
confidence: 99%
“…The simplified expressions in Eqs. (20)(21)(22)(23)(24)(25)(26)(27)(28) are typically presented in texts on atmospheric entry [12][13][14]26,27], as they readily provide insight into several ballistic entry phenomena. First, the altitudes at which maximum acceleration and heat rate occur are not functions of velocity to first order: they are determined by vehicle parameters, planetary parameters, and the flight-path angle.…”
Section: Simplified Expressionsmentioning
confidence: 99%
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