Actions for Neutral Orbital Altitude Density Effects on the International Space Station

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Neutral Orbital Altitude Density Effects on the International Space Station

Author
Smith, O.E.
Published
1997.
Physical Description
1 electronic document
Additional Creators
Adelfang, S. I. and Smith, R. E.
Online Version

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Restrictions on Access
Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
One of the design requirements of the International Space Station (ISS) is that each year accelerations of one micro-g cannot be exceeded at the ISS internal payload location for 6 periods of not less than 30 consecutive days. Although there are other causes, this study deals only with the accelerations caused by atmospheric drag. The critical ambient neutral density, computed using the Marshall Engineering Thermosphere Model, required to produce accelerations of one micro-g on the ISS, is estimated using an atmospheric drag acceleration equation. Results show that the design requirements may be difficult to meet during periods of extremely high solar activity; the planned reboost and altitude strategies for the ISS may have to be revised to allow for the uncertainty in the prediction of neutral atmospheric density within the 100-day period established for orbital decay before reboost.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19970028145.
Accession ID: 97N26979.
NASA-CR-205357.
NAS 1.26:205357.
Terms of Use and Reproduction
No Copyright.
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