Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Orbital lifetime predictions of Low Earth Orbit satellites and the effect of a DeOrbitSail
Thesis (MEng)--Stellenbosch University, 2013.
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | en_ZA |
| Published: |
Stellenbosch : Stellenbosch University
2013
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613780676968448 |
|---|---|
| access_status_str | Open Access |
| author | Afful, Michael Andoh |
| author2 | Steyn, W. H. |
| author_browse | Afful, Michael Andoh Steyn, W. H. |
| author_facet | Steyn, W. H. Afful, Michael Andoh |
| author_sort | Afful, Michael Andoh |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MEng)--Stellenbosch University, 2013. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/85862 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:41:35.119Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/85862 Orbital lifetime predictions of Low Earth Orbit satellites and the effect of a DeOrbitSail Afful, Michael Andoh Steyn, W. H. Opperman, B. D. L. Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. Deorbit sail Orbital lifetime predictions Low earth orbit satellites Orbit decay Deorbiting of spacecraft Dissertations -- Electrical and electronic engineering Space debris SUNSAT Artificial satellites -- Orbits Theses -- Electrical and electronic engineering Thesis (MEng)--Stellenbosch University, 2013. ENGLISH ABSTRACT: Throughout its lifetime in space, a spacecraft is exposed to risk of collision with orbital debris or operational satellites. This risk is especially high within the Low Earth Orbit (LEO) region where the highest density of space debris is accumulated. This study investigates orbital decay of some LEO micro-satellites and accelerating orbit decay by using a deorbitsail. The Semi-Analytical Liu Theory (SALT) and the Satellite Toolkit was employed to determine the mean elements and expressions for the time rates of change. Test cases of observed decayed satellites (Iridium-85 and Starshine-1) are used to evaluate the predicted theory. Results for the test cases indicated that the theory tted observational data well within acceptable limits. Orbit decay progress of the SUNSAT micro-satellite was analysed using relevant orbital parameters derived from historic Two Line Element (TLE) sets and comparing with decay and lifetime prediction models. The study also explored the deorbit date and time for a 1U CubeSat (ZACUBE-01). A proposed orbital debris solution or technology known as deorbitsail was also investigated to gain insight in sail technology to reduce the orbit life of spacecraft with regards to de- orbiting using aerodynamic drag. The deorbitsail technique signi cantly increases the e ective cross-sectional area of a satellite, subsequently increasing atmospheric drag and accelerating orbit decay. The concept proposed in this work introduces a very useful technique of orbit decay as well as deorbiting of spacecraft. AFRIKAANSE OPSOMMING: Gedurende sy leeftyd in die ruimte word 'n ruimtetuig blootgestel aan die risiko van 'n botsing met ruimterommel of met funksionele satelliete. Hierdie risiko is veral hoog in die lae-aardbaan gebied waar die hoogste digtheid ruimterommel voorkom. Hierdie studie ondersoek die wentelbaanverval van sommige Lae-aardbaan mikrosatelliete asook die versnelde baanverval wanneer van 'n deorbitaal meganisme gebruik gemaak word. Die Semi-Analitiese Liu Teorie en die Satellite Toolkit sagtewarepakket is gebruik om die gemiddelde baan-elemente en uitdrukkings vir hul tyd-afhanlike tempo van verandering te bepaal. Toetsgevalle van waargenome vervalde satelliete (Iridium-85 en Starshine-1) is gebruik om die verloop van die voorspelde teoretiese verval te evalueer. Resultate vir die toetsgevalle toon dat die teorie binne aanvaarbare perke met die waarnemings ooreenstem. Die verloop van die SUNSAT mikrosatelliet se wentelbaanverval is ook ontleed deur gebruik te maak van historiese Tweelyn Elemente datastelle en dit te vergelyk met voorspelde baan- elemente. Die studie het ook ondersoek ingestel na die voorspelde baan-verbyval van 'n 1-eenheid cubesat (ZACUBE-01). Die impak op wentelbaanverval deur 'n voorgestelde oplossing vir die beperking van ruimterommel, 'n deorbitaalseil, is ook ondersoek. So seil verkort 'n satelliet se ruimte- leeftyd deur sy e ektiewe deursnee-area te vergroot en dan van verhoogde atmosferiese sleur en sonstralingsdruk gebruik te maak om die vervalproses te versnel. Hierdie voorgestelde konsep is 'n moontlike nuttige tegniek vir versnelde baanverval en beheerde deorbitalering van ruimtetuie om ruimterommel te verminder. 2013-11-28T13:51:49Z 2013-12-13T17:35:11Z 2013-11-28T13:51:49Z 2013-12-13T17:35:11Z 2013-12 Thesis http://hdl.handle.net/10019.1/85862 en_ZA Stellenbosch University xiv, 118 p. : ill. application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Deorbit sail Orbital lifetime predictions Low earth orbit satellites Orbit decay Deorbiting of spacecraft Dissertations -- Electrical and electronic engineering Space debris SUNSAT Artificial satellites -- Orbits Theses -- Electrical and electronic engineering Afful, Michael Andoh Orbital lifetime predictions of Low Earth Orbit satellites and the effect of a DeOrbitSail |
| title | Orbital lifetime predictions of Low Earth Orbit satellites and the effect of a DeOrbitSail |
| title_full | Orbital lifetime predictions of Low Earth Orbit satellites and the effect of a DeOrbitSail |
| title_fullStr | Orbital lifetime predictions of Low Earth Orbit satellites and the effect of a DeOrbitSail |
| title_full_unstemmed | Orbital lifetime predictions of Low Earth Orbit satellites and the effect of a DeOrbitSail |
| title_short | Orbital lifetime predictions of Low Earth Orbit satellites and the effect of a DeOrbitSail |
| title_sort | orbital lifetime predictions of low earth orbit satellites and the effect of a deorbitsail |
| topic | Deorbit sail Orbital lifetime predictions Low earth orbit satellites Orbit decay Deorbiting of spacecraft Dissertations -- Electrical and electronic engineering Space debris SUNSAT Artificial satellites -- Orbits Theses -- Electrical and electronic engineering |
| url | http://hdl.handle.net/10019.1/85862 |
| work_keys_str_mv | AT affulmichaelandoh orbitallifetimepredictionsoflowearthorbitsatellitesandtheeffectofadeorbitsail |