Dynamics Modeling of Electromagnetic Formation Flight
Abstract
Electromagnetic formation flight (EMFF) is a method of holding satellite arrays in a formation without the use of propellant. A formation of smaller satellites that work together can be more effective and cheaper than one larger satellite performing a similar mission. EMFF will enable the United States Air Force to develop flexible, robust space systems by splitting different systems and payloads into modules that link together on orbit and fly in a formation. Such systems will reduce the complexity of design as well as increase the ability to respond to unforeseen occurrences during mission operations. The concept of EMFF relies on the fact that the spacecraft in the formation are flying relative to each other and uses attraction and repulsion forces to actuate the system. The research presented here analyzes these relative forces while detailing the development and verification of a Simulink dynamics model for an electromagnetic formation flight project at the Space Systems Laboratory. Biot-Savart's law is used to characterize the magnetic fields from each coil and model the resulting forces and torques. The model uses finite element analysis to compute the forces and torques exchanged between difference segments on the two coils. The simulation has been accurate in modeling the forces and torques induced by resonant coils as a result of their relative position and orientation thereby allowing future researchers to develop and test formation-flying control algorithms before using the valuable on-orbit time allocated for hardware testing.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 06, 2013
- Accession Number
- AD1015629
Entities
People
- Andrew R. Hilton
- David W. Miller
- Gregory J. Eslinger
Organizations
- United States Air Force Academy