Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 13 of 13 for “"Electromagnetic Formation Flight"”.
-
Electromagnetic formation flight of satellite arrays
… arrays use propellant as a reaction mass. For formation flying systems, propellant becomes a critical consumable which can be quickly exhausted while maintaining relative orientation. Furthermore, the total required propellant mass is highly dependant on [delta]V, which requires propellant mass …
-
Electromagnetic formation flight dipole solution planning
Electromagnetic Formation Flight (EMFF) describes the concept of using electromagnets (coupled with reaction wheels) to provide all of the necessary forces and torques needed to maintain a satellite's relative position and attitude in a formation of satellites. With EMFF, this formation can be …
-
Micro-electromagnetic formation flight of satellite systems
Electromagnetic formation flight (EMFF) investigates the concept of using electromagnets to provide the forces to maintain a satellite's relative position in a formation. Thus far, high temperature superconducting (HTS) wire has been considered the enabling technology and the concept has been sized …
-
Dynamic and thermal control of an electromagnetic formation flight testbed
Formation flight of multiple spacecraft is an emerging method for completing complex space missions in an efficient manner. A limitation found in maintaining such formations is the need for precise control at all times. Using traditional thruster propulsion systems can be costly and life-limiting …
-
Cryogenic heat pipe for cooling high temperature superconductors with application to Electromagnetic Formation Flight Satellites
An emerging method of propellant-less formation flight propulsion is the use of electromagnets coupled with reaction wheels. This technique is called Electromagnetic Formation Flight (EMFF). In order to create a large magnetic field necessary for actuating formation flying spacecraft, EMFF uses …
-
Design and implementation of the state estimator for trajectory following of an electromagnetic formation flight testbed
Formation fight of multiple satellites is an attractive concept for achieving complicated space missions that are di±cult or impossible with a single monolithic satellite. Since traditional thrusters require propellant consumption for maintaining the formation of multiple satellites, one concern is …
-
Development and validation of an Electromagnetic Formation Flight simulation as a platform for control algorithm design
Electromagnetic Formation Flight (EMFF) consists of using electromagnetic forces to position or orient satellites in a relative target location or attitude and achieve a certain target formation on orbit. This thesis introduces the fundamental equations of EMFF and the design of the Resonant …
-
Path planning and position control and of an underactued [sic] electromagnetic formation flight satellite system in the near field
Electromagnetic formation flight is the process of using electromagnetic actuators (coils) on multiple spacecraft to produce relative (internal) forces in order to control the relative position and orientation of the spacecraft. This thesis demonstrates the ability to experimentally generate the …
-
Dynamics of multi-body space interferometers including reaction wheel gyroscopic stiffening effects : structurally connected and electromagnetic formation of flying architectures
… structurally connected interferometers and electromagnetic formation flying interferometers. For structurally connected interferometers, we develop a coupled disturbance analysis method that accurately predicts a space telescope's optical performance in the presence of reaction wheel …
-
Dynamic programming applied to electromagnetic satellite actuation
Electromagnetic formation flight (EMFF) is an enabling technology for a number of space mission architectures. While much work has been done for EMFF control for large separation distances, little work has been done for close-proximity EMFF control, where the system dynamics are quite complex. …
-
A performance-driven experiment framework for space technology development using the International Space Station
… an attachment to the SPHERES facility that tests Electromagnetic Formation Flight using electromagnetic coils attached to the vehicle. The RINGS experiment campaign is reviewed with a focus on the lessons learned from the operational phase of the project. From these lessons, the experiment …
-
New decentralized algorithms for spacecraft formation control based on a cyclic approach
When considering the formation control problem for large number of spacecraft, the advantages of implementing control approaches with a centralized coordination mechanism can be outpaced by the risks associated with having a primary vital control unit. Additionally, in formations with a large …
-
Determining Feasibility of a Propulsionless Microsatellite Formation Flight Mission
<p>Benefits of developing missions with multiple formation flying spacecraft as an alternative to a traditional monolithic vehicle are becoming apparent. In some cases, these missions can lower cost and increase flexibility among other situational advantages. However, there are various limitations …