Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
ISAAC: A REXUS STUDENT EXPERIMENT TO DEMONSTRATE AN EJECTION SYSTEM WITH PREDEFINED DIRECTION
Visa övriga samt affilieringar
2015 (Engelska)Ingår i: EUROPEAN ROCKET AND BALLOON: PROGRAMMES AND RELATED RESEARCH, 2015, s. 235-242Konferensbidrag, Publicerat paper (Refereegranskat)
Resurstyp
Text
Abstract [en]

ISAAC - Infrared Spectroscopy to Analyse the middle Atmosphere Composition was a student experiment launched from SSC's Esrange Space Centre, Sweden, on 29th May 2014, on board the sounding rocket REXUS 15 in the frame of the REXUS/BEXUS programme. The main focus of the experiment was to implement an ejection system for two large Free Falling Units (FFUs) (240 mm x 80 mm) to be ejected from a spinning rocket into a predefined direction. The system design relied on a spring-based ejection system. Sun and angular rate sensors were used to control and time the ejection. The flight data includes telemetry from the Rocket Mounted Unit (RMU), received and saved during flight, as well as video footage from the GoPro camera mounted inside the RMU and recovered after the flight. The FFUs' direction, speed and spin frequency as well as the rocket spin frequency were determined by analyzing the video footage. The FFU-Rocket-Sun angles were 64.3 degrees and 104.3 degrees, within the required margins of 90 degrees +/- 45 degrees. The FFU speeds were 3.98 m/s and 3.74 m/s, lower than the expected 5 +/- 1 m/s. The FFUs' spin frequencies were 1.38 Hz and 1.60 Hz, approximately half the rocket's spin frequency. The rocket spin rate slightly changed from 3.163 Hz before the ejection to 3.117 Hz after the ejection of the two FFUs. The angular rate, sun sensor data and temperature on the inside of the rocket module skin were also recorded. The experiment design and results of the data analysis are presented in this paper.

Ort, förlag, år, upplaga, sidor
2015. s. 235-242
Serie
ESA Special Publications, ISSN 0379-6566 ; 730
Nyckelord [en]
ISAAC, REXUS, ejection system, pre-defined direction
Nationell ämneskategori
Rymd- och flygteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-186694ISI: 000373647300032ISBN: 978-92-9221-294-0 (tryckt)OAI: oai:DiVA.org:kth-186694DiVA, id: diva2:934130
Konferens
22nd ESA Symposium on European Rocket and Balloon Programmes and Related Research, JUN 07-12, 2015, Tromso, NORWAY
Anmärkning

QC 20160608

Tillgänglig från: 2016-06-08 Skapad: 2016-05-13 Senast uppdaterad: 2016-06-08Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Personposter BETA

Tibert, Gunnar

Sök vidare i DiVA

Av författaren/redaktören
Ivchenko, NickolayOlentsenko, GeorgiTibert, GunnarYuan, Yunxia
Av organisationen
Rymd- och plasmafysikFarkost och flyg
Rymd- och flygteknik

Sök vidare utanför DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetricpoäng

isbn
urn-nbn
Totalt: 627 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf