SCIENTIFIC AND TECHNICAL AEROSPACE REPORTS
A Biweekly Publication of the National Aeronautics and Space Administration
VOLUME 43, ISSUE 16 - AUGUST 12, 2005
13 ASTRODYNAMICS
Includes powered and free flight trajectories; orbital and launching dynamics.
20050196278 Air Force Inst. of Tech., Wright-Patterson AFB, OH USA
A Numerical Analysis for Passive Attitude Stabilization Using a Tethered Balloon on a Gravity Gradient Satellite
Maramba, Ernest M.; Mar. 2005; 120 pp.; In English; Original contains color illustrations Report No.(s): AD-A435263; AFIT/GA/ENY/05-M07; No Copyright; Avail: Defense Technical Information Center (DTIC)
This research effort analyzes the fundamental dynamics governing a satellite with a gravity gradient boom and a tethered balloon. Satellites that use gravity gradient booms for passive attitude control are characterized by undamped pitch oscillations and no roll control. The tethered balloon acts as a high drag device that accounts for the most drag on the satellite system. By attaching a drag device, the system resists rolling movements while also damping oscillations. This could potentially be a cost effective method for increasing satellite stabilization. The goal of this research is to model the dynamics and determine the feasibility of a gravity gradient stabilized satellite with an attached balloon. A simulation written in Matlab analyzes the behavior of such a satellite. The research is limited to circular orbits around a spherical Earth and includes only in-plane motion for each mass. Stable ranges for certain tether characteristics are found for three different satellites. DTIC
Artificial Satellites; Attitude (Inclination); Attitude Control; Attitude Stability; Gravity Gradient Satellites; Numerical Analysis; Tethered Balloons
Source: NASA.
|
IHS sells products and services designed to meet the needs of today's aviation & aerospace engineers, including:
- Quick access to FAA, JAA, ICAO and UK-CAA information and regulations.
- Validated engineering methods, data, principles, worked examples, programs and related equations on over 1340 specific aerospace, process, structural and mechanical engineering topics.
- The IHS Fasteners eCatalog, providing decision support for the identification, specification and sourcing of aerospace & defense standard fasteners/hardware such as bolts, screws, nuts, washers, rivets, studs, etc.
- Standards documents and collections from the top aerospace & aviation standards development organizations, including SAE International, AIAA, AIA, FAA and NASA.
|