Computer Science
Scientific paper
Aug 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974oppt.workr....s&link_type=abstract
In Dynatrend, Inc. Proc. of Outer Planet Probe Technol. Workshop, Sect. 1 through 11 18 p (SEE N75-20358 12-12)
Computer Science
Atmospheric Composition, Planetary Atmospheres, Accelerometers, Equations Of Motion, Pressure Measurement, Temperature Measurement
Scientific paper
Atmospheric structure of outer planets as determined by pressure, temperature, and accelerometers is reviewed and results obtained from the PAET earth entry are given. In order to describe atmospheric structure, entry is divided into two regimes, high and low speed. Acceleration is then measured: from these measurements density is determined as a function of time. The equations of motion are integrated to determine velocity, flight path angle, and altitude as a function of time. Density is then determined as a function of altitude from the previous determinations of density and altitude as a function of time. Hydrostatic equilibrium was assumed to determine pressure as a function of altitude. Finally the equation of space applied to determine temperature as a function of altitude, if the mean molecular weight is known. The mean molecular weight is obtained independently from either the low speed experiment or from the composition experiments.
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