Results 261 to 270 of about 69,393 (296)

Propulsion requirements for drag-free satellites

Journal of Spacecraft and Rockets, 1970
Drag-free satellite design and propulsion requirements, noting orbit perturbation ...
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Errata-Drag Coefficients for AstronomicalObservatory Satellites

Journal of Spacecraft and Rockets, 1975
The first several lines immediately after Eq. (9) should read as follows: " where ?, , £2» ^3 are direction cosines of the south galactic pole, expressed in earth equatorial coordinates. The corresponding geometry is shown in Fig. 5." The last sentence on p.
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Embedded Model Control Application to Drag-Free and Satellite-to-Satellite Tracking

2006 14th Mediterranean Conference on Control and Automation, 2006
This paper describes the realization of a generic simulator for formation flying satellites, and the design and application of Embedded Model Control (EMC) to the spacecraft control, as potentially applicable to a constellation of drag-free satellites.
MASSOTTI, Luca, CANUTO, Enrico, SILVESTRIN P.   +2 more
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Recommended Drag Coefficients for Aeronomic Satellites

2013
Densities derived from accelerometer measurements depend on the drag coefficient assigned to the satellite. Although laboratory measurements increase our understanding of gassurface interactions, they are not adequate to determine the appropriate drag coefficient because it is not known how the surface conditions at any particular altitude relate to ...
Mildred M. Moe, Steven D. Wallace, Kenneth Moe   +2 more
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Drag coefficients for astronomical observatory satellites

Journal of Spacecraft and Rockets, 1975
The first experimental European communications satellite Symphonie is a geostationary satellite. The satellite is designed and built in a joint project by French and German aerospace firms. A description is given of the basic technical concept of the satellite. The apogee motor is discussed along with the satellite stabilization system.
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The Drag Brake Manned Satellite System

1960
The manned satellite designs which have been most frequently proposed are extrapolations either of airplanes or of missile nose cones. This paper presents a new approach to the design of a manned satellite system. The central feature of this design is a variable area drag brake.
R. W. Detra, A. R. Kantrowitz, F. R. Riddell, P. H. Rose   +3 more
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Mass center estimation in spinning drag-free satellites

Guidance, Control and Flight Mechanics Conference, 1971
Analog mass center estimator for spinning drag- free orbiting satellite, using free-falling proof mass shielded from external forces inside satellite cavity as ...
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Satellite Drag Perturbations in an Oblate Diurnal Atmosphere

AIAA Journal, 1975
Analytic expressions are derived that describe decay rates in period and eccentricity, and rotation in perigee argument for orbits of small eccentricity ...
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Operational satellite drag model standards

33rd Aerospace Sciences Meeting and Exhibit, 1995
F Marcos, C Baker, A Hedin, J Liu, J Bass   +4 more
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Satellite Orbital Drag

2016
Eftyhia Zesta, Cheryl Y. Huang
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