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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Simulation of direct current microdischarges for microthruster applications

Kothnur, Prashanth Srinivasa, January 1900 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2005. / Vita. Includes bibliographical references.
12

Spacecraft formation flying : dynamics and control /

Lin, Hua. January 2008 (has links)
Thesis (M.Sc.)--York University, 2008. Graduate Programme in Earth and Space Science. / Typescript. Includes bibliographical references (leaves 92-97). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR51555
13

Adaptive control applied to the Cal Poly spacecraft attitude dynamics simulator a thesis /

Downs, Matthew C. Mehiel, Eric A. January 1900 (has links)
Thesis (M.S.)--California Polytechnic State University, 2009. / Mode of access: Internet. Title from PDF title page; viewed on Feb. 10, 2010. Major professor: Dr. Eric Mehiel. "Presented to the faculty of California Polytechnic State University, San Luis Obispo." "In partial fulfillment of the requirements for the degree of Master of Science in Aerospace Engineering." "October, 2009." Includes bibliographical references (p. 55-56).
14

Hybrid particle-finite element simulation of large deformation dynamics in composite materials

Park, Young-keun 28 August 2008 (has links)
Not available / text
15

Continuum structural representation of flexure and tension stiffened one-dimensional spacecraft architectures

Larsen, Jeffrey James. January 2009 (has links) (PDF)
Thesis (MS)--Montana State University--Bozeman, 2009. / Typescript. Chairperson, Graduate Committee: Christopher H. M. Jenkins. Includes bibliographical references (leaves 59-61).
16

Model based reasoning applied to the diagnosis of spacecraft electrical power system faults.

Adamovits, Peter J. (Peter Joseph), Carleton University. Dissertation. Engineering, Aerospace. January 1992 (has links)
Thesis (M. Eng.)--Carleton University, 1992. / Also available in electronic format on the Internet.
17

Strain-based displacement estimation for precision spacecraft structures

Coleman, Craig S. 12 1900 (has links)
For precision spacecraft structures used for antennas and reflectors of telescopes, determination of in-orbit structural displacement and its control is very important. While this kind of measurement is relatively easy to carry out in a laboratory setting, it can be problematic in a real world environment. A procedure for the real-time determination of displacements at any point of a vibrating body can be utilized by measuring strain that is present. The procedure could employ measurement devices like Fiber Bragg Gratings, which are capable of very fine strain measurements. This thesis presents the finite element analysis of a truss similar to the NPS Space truss to observe the behavior of the strain relative to the displacement. A relationship between strain and displacement for the truss is derived.
18

Army space and transformation

Scherer, Clay S. 09 1900 (has links)
The Army is undergoing a Transformation process, the outcome of which will be an enhanced warfighting capability via the Objective Force. Space is a key enabler for the Army's Objective Force capabilities and Joint combat operations. The Army has a long history of success in the space mission area that stretches back to the 1940s. The Army established doctrine for conducting space operations in support of the Objective Force. This thesis explains why the Army is involved in space from historical, doctrinal and policy perspectives. The Army created force structure for Space Support Elements (SSE) at the tactical level and organic to Division headquarters, and has planned and proposed additional space elements at the Brigade, Corps and Army organizational levels. The FA40, (Space Operations), Career Field is a relatively new personnel category that brings space products and services to the warfighter. Proper distribution of the FA40 personnel pool is a critical part of assuring the success of the FA40 Career Field. This thesis presents recommendations on how the Army can better organize its space force structure, allocate personnel and develop future space capabilities requirements documents to ensure relevancy in a transformed Army.
19

Ground-based high energy power beaming in support of spacecraft power requirements

Guoan, Christopher M. 06 1900 (has links)
This thesis investigates the feasibility of projecting ground-based laser power to energize a spacecraft electrical bus via the solar panels. The energy is projected through a telescope, using modern optical compensation systems, at controlled wavelengths. Research conducted on high-energy lasers has matured to the point today, that the bulk of the power required by spacecraft on orbit can be projected from the surface of the earth. With battery life being the greatest limitation on spacecraft lifespan, the ability to provide electrical power from the surface to a satellite in eclipse with degraded batteries could mean multi-billion dollar cost savings by extending the lifetime of current and future satellites. / US Navy (USN) author.
20

Electric propulsion and controller design for drag-free spacecraft operation in low earth orbit

Marchetti, Paul J. January 2006 (has links)
Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords:Spacecraft; electric propulsion; LEO; GRACE; Drag-free. Includes bibliographical references (leaves 111-112).

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