. 24/7 Space News .
Efforts To De-Spin WIRE Continue
Greenbelt Md - March 6, 1999 - Efforts to establish control of the Wide-Field Infrared Explorer (WIRE) spacecraft are continuing. The spacecraft continues to spin, but the rate of spin has stabilized at about 60 revolutions per minute. Last night, controllers sent commands to the spacecraft to see if the telescope could be gently moved in order to reduce solar input. However, imparting even the extremely light magnetic countering force on the rotating spacecraft caused the spacecraft�s solar arrays to begin oscillating and the maneuver was stopped.

"We are still hopeful that we can take advantage of the fact that WIRE�s rotation rate has finally stabilized, but our efforts last night proved we have to develop a different scheme," said Jim Watzin, Small Explorer Project Manager. "We are totally focused on gaining full control of WIRE and we won�t do anything to jeopardize other systems."

Watzin said the WIRE team is devising a new plan which will involve building a software program that would use the spacecraft�s onboard attitude control system to "de-spin" the spacecraft." Watzin said it would take several days to develop this software package.

WIRE was launched March 4 at 9:57 p.m. EST on from Vandenberg Air Force Base, Calif. Ground controllers determined that WIRE was spinning instead of maintaining a stable position in orbit and was warmer than expected. The spacecraft carries frozen hydrogen to cool its instrument. Controllers believe the hydrogen is venting as it warms up, causing the spacecraft to spin. Spacecraft controllers do not know what specifically caused the situation.

The WIRE team is communicating with the spacecraft. "The subsystems are in good shape," said Watzin. "The solar arrays are generating power and the battery is fully charged. We have plenty of power to effect a recovery."

  • WIRE Press Announcements (Detailed)
  • WIRE Science Website
  • Orbital (Pegasus launcher)

  • Main Small Explorer's Web Site

    Wired Reports At SpaceDaily

  • WIRE Unraveled: Satellite Fate Unknown
  • Pegasus Cleared For Second Launch Attempt
  • Wired For Wide Galactic Coverage

    Orbital Sciences Reports From Spacer.Com

  • Orbital Wins Boulder Solar Science Sat
  • Orbital To Outfit 50,000 Hertz Cars With GPS
  • Orbital to Acquire Raytheon's Transportation Management Solutions Business Unit
  • Orbital and Coleman Win Small Launcher Contracts
  • Pegasus Lofts Brazil EOsat
  • Orbital Set To Launch Brazil EOsat
  • OrbComm Completed With Pegasus Launch
  • Orbital Signs Constellation
  • Orbital Chalks Up Billions
  • Orbital Wins ECCO Deal
  • Orbital Launches TRACE
  • SNOE and Teledesic 1 Launched
  • Orbital Wins $1.7 Billion in 1997
  • Orbital Selected For $16M GALEX Satellite
  • FAA Pulls Pegasus Launch License
  • Orbital Sciences Wins Booster Contract




    Thanks for being here;
    We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

    With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

    Our news coverage takes time and effort to publish 365 days a year.

    If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.
    SpaceDaily Contributor
    $5 Billed Once


    credit card or paypal
    SpaceDaily Monthly Supporter
    $5 Billed Monthly


    paypal only














  • The content herein, unless otherwise known to be public domain, are Copyright 1995-2016 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service.