World Library  
Flag as Inappropriate
Email this Article


Article Id: WHEBN0032394485
Reproduction Date:

Title: Pssc-2  
Author: World Heritage Encyclopedia
Language: English
Subject: 2011 in spaceflight, STS-135, Resourcesat-2, Zhongxing-10, USA-230
Publisher: World Heritage Encyclopedia


Diagram of PSSC-2
Mission type Technology
Operator US Air Force
COSPAR ID 2011-031B
Spacecraft properties
Manufacturer Aerospace Corporation
Launch mass 3.7 kilograms (8.2 lb)
Start of mission
Launch date 8 July 2011, 15:29 (2011-07-08T15:29Z) UTC
Rocket Space Shuttle Atlantis STS-135
Launch site Kennedy LC-39A
Orbital parameters
Reference system Geocentric
Regime Low Earth

PSSC-2, or Pico-Satellite Solar Cell Testbed 2,[1] also known as PSSC-Testbed 2, is a miniaturised satellite which will be operated by the United States Air Force as part of a technology demonstration programme. It was the last satellite to be deployed from a Space Shuttle.[2]


PSSC-2 was launched aboard Space Shuttle Atlantis on its final mission, STS-135. The launch took place from Launch Complex 39A at the Kennedy Space Center, at 15:29 UTC on 8 July 2011.[3] PSSC-2, along with a deployment mechanism, was carried to orbit in the payload bay of the Shuttle, attached to the right wall behind the Orbiter Docking System.[4] It remained attached during Atlantis' visit to the International Space Station, and was originally scheduled to be deployed at 07:11 UTC on 19 July, the day after undocking.[5] With the extension of the STS-135 mission, undocking, and hence deployment, was delayed by one day.[6]

Animated view of the PSSC-2 deploy, the final object deployed by the Space Shuttle Program.

PSSC-2 is the second PSSC satellite, following PSSC-1 which was deployed from Space Shuttle Endeavour during STS-126 in 2008. It carries two technology demonstration experiments: Miniature Tracking Vehicle (MTV), and the Compact Total Electron Content Sensor (CTECS). MTV will test the satellite's ability to function as a reference body for tracking stations, whilst CTECS will observe the signals from occulting Global Positioning System satellites in order to study the density of the ionosphere. The satellite also carries cameras intended to capture the last images of a Space Shuttle in orbit, shortly after separation.[2]

PSSC-2 is a 3.7-kilogram (8.2 lb) spacecraft which was built by the Aerospace Corporation, and is equipped with three-axis stabilisation, adaptive communications systems, and systems to monitor the energy produced by its solar cells. Four ammonium perchlorate solid rocket motors, each capable of generating 40 newtons (9.0 lbf) of thrust, will be used for manoeuvring one month after launch; either to raise the satellite's orbit or to deorbit it.[7]


  1. ^ Press Kit,
  2. ^ a b STS-135: The Final Mission (Press Kit), NASA, July 2011, pp. 100–101 
  3. ^ McDowell, Jonathan. "Issue 644". Jonathan's Space Report. Retrieved 12 July 2011. 
  4. ^ Gebhardt, Chris (17 June 2011). "STS-135/ULF-7 – The Final Flight’s Timeline Takes Shape". Retrieved 12 July 2011. 
  5. ^ Harwood, William (8 July 2011). "STS-135 Flightplan". Spaceflight Now. Retrieved 12 July 2011. 
  6. ^ Harwood, William (11 July 2011). "Space station resupply pod hoisted from Atlantis' bay". Spaceflight Now. Retrieved 12 July 2011. 
  7. ^ Krebs, Gunter. "PSSC-Testbed 2". Gunter's Space Page. Retrieved 12 July 2011. 
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.