Show simple item record

dc.contributor.advisorDutta, Atri
dc.contributor.authorKarampudi, Prathyusha
dc.date.accessioned2019-09-06T17:14:22Z
dc.date.available2019-09-06T17:14:22Z
dc.date.issued2019-07
dc.identifier.othert19033
dc.identifier.urihttp://hdl.handle.net/10057/16551
dc.descriptionThesis (M.S.)-- Wichita State University, College of Engineering, Dept. of Aerospace Engineering
dc.description.abstractSpace debris are defunct man-made satellites orbiting in the low-earth orbit (LEO) and Geo-synchronous orbit (GEO) orbiting around earth with high velocities posing a serious threat for current and future missions. Controlling the growth of debris is of great importance for sustained space operations. This has led researchers to investigate a wide variety of active debris removal missions basing on their characteristics: contact less, contact, capturing and drag augmentation methods. This thesis discusses space debris removal using ground based lasers. The effect of laser ablation on de-orbiting process was investigated using Sims-Flanagan model, where change in momentum translates in gradual change in the debris trajectory. A 5 cm spherical shaped debris of mass 0.1 kg was modeled using a series of change in velocities ( Δv's) due to multiple laser engagements to achieve the target orbit of 120 km altitude. The translational dynamics of the debris was determined assuming laser propagation vector non-tangential to its surface under the influence of atmospheric drag. It was observed that the total de-orbit time decreases with the increase in laser coupling coefficient and decrease in laser pulse duration. The model estimated hours to reach the target perigee radius with laser engagement of each 30 seconds, for the coupling coefficient of 6 units, and the correspondingly seconds and engagements for the 6ns laser pulse duration. The model also observed that the atmospheric drag influenced the de-orbit time exponentially accelerating the process as it approaching the earth atmosphere.
dc.format.extentxii, 63 pages
dc.language.isoen_US
dc.publisherWichita State University
dc.rightsCopyright 2019 by Prathyusha Karampudi All Rights Reserved
dc.subject.lcshElectronic dissertation
dc.titleLaser ablation based on-orbit debris removal
dc.typeThesis


Files in this item

Thumbnail

This item appears in the following Collection(s)

  • Master's Theses [1406]
    This collection includes Master's theses completed at the Wichita State University Graduate School (Fall 2005 --)

Show simple item record