STS-109 Crew Replaces Power Control Unit | SpaceRef

STS-109 Crew Replaces Power Control Unit

STATUS REPORT
Date Released: Wednesday, March 6, 2002
Source: Johnson Space Center

STS-109 Extravehicular Activity

STS-109 Mission Guide

EVA Operations Reference

STS-109 EVA Timeline

Spacewalk Number One, Flight Day Four: Replace -V2 Solar Array and Diode Box Assembly, Install Diode Box Controller Cross Strap Harness

Spacewalk Number Two, Flight Day Five: Replace +V2 Solar Array and Diode Box Assembly and Reaction Wheel Assembly-1

Spacewalk Number Three, Flight Day Six: Replace Power Control Unit (PCU)

Spacewalk Number Four, Flight Day Seven: Replace Faint Object Camera with the Advanced Camera for Surveys, Install Electronics Support Module and Perform Power Control Unit Cleanup Tasks

Spacewalk Number Five, Flight Day Eight: Install the Near-Infrared Camera and Multi-Object Spectrometer (NICMOS) Cryogenic Cooler and NICMOS Cooling System Radiator

The STS-109 crew successfully replaced the Hubble Space Telescope's Power Control Unit during the mission's third space walk this morning. Mission Specialists John Grunsfeld and Rick Linnehan began their excursion outside Space Shuttle Columbia at 2:28 a.m. CST (0828 GMT) and wrapped it up at 9:16 a.m. CST (1516 GMT).

The start of the space walk was delayed about two hours due to a water leak in Grunsfeld's spacesuit. After analyzing the situation, the flight control team decided to have Grunsfeld put on another suit and to press ahead with space walk's objectives.

In order for Grunsfeld and Linnehan to replace the unit, Hubble was powered down for the first time in its history at 3:37 a.m. CST (0937 GMT). It was successfully turned back on at 8:02 a.m. CST (1402 GMT) after the installation of the new Power Control Unit.

Mission Specialist Nancy Currie operated the shuttle's robot arm, and Mission Specialists Jim Newman and Mike Massimino coordinated the space walk. Newman and Massimino are scheduled to perform the mission's fourth space walk Thursday morning.

Share and Enjoy: These icons link to social bookmarking sites where readers can share and discover new web pages.

Mercury - Venus - The Moon - Mars - Jupiter - Saturn - Pluto

RADWIN empowers service providers so they can deliver high speed Wireless broadband Access services.

Find hose reels and watering systems

Quality leather chairs in a variety of styles.

News from Commercial Space Watch

- Recovery Act: Water Management in California: Cyber Infrastructure for Irrigation Optimization

- Former Shuttle Astronaut-Astronomer, Sam Durrance, Joins the CSF Suborbital Researchers Group

- Satellite-Based Earth Observation Market Entering Phase of Impressive Growth

- NASA and Lighting Science Sign Agreement to Develop Lighting for Space Exploration

- Sky No Longer the Limit for Digital Magazines

- NASA Develops Algae Bioreactor as a Sustainable Energy Source

- Aerojet Engines Support Space Shuttle Atlantis' Re-stocking Mission to International Space Station

- Suborbital Applications Researchers Group Meets in Washington

- NewSpace Is Under Attack

- Pratt & Whitney Rocketdyne Successfully Tests Thruster for Unmanned Lunar Lander

- bacus Technology Corporation Awarded NASA Kennedy Space Center Small Business Prime Contractor of the Year - 2009

- NASA ARC Memo; Procurement Sensitivity of the Competition of Aeronautics and Exploration Mission Modeling and Simulation Request for Proposal NNA09274979R

- Lockheed Martin Tests Carbon Nanotube-Based Memory Devices on NASA Shuttle Mission

- Leonid Meteor Shower to Perform Late Tonight

- Sri Lanka signs agreement with SSTL for space capability

- Decorate your home with nautical decor

- Dieses Portal stellt Ihnen die besten online Casino Bonus und Pokerr�ume im Internet vor.

- Play free bingo games and black out bingo.

- 220Marketing specializes in providing mortgage marketing for mortgage companies and managers.

- Take your time to tour our site and check out all the fun games we operate. In addition to the 20 online bingo rooms we operate, we also have online keno.

- TV Stands