spacetoday.net: space news from around the web

ExoLance
Proton launch anomaly blamed on turbopump bearing
Posted: Wed, Feb 13, 2013, 6:47 AM ET (1147 GMT)
Investigators have blamed a turbopump bearing failure for the premature shutdown of a Proton upper stage in December, International Launch Services (ILS) announced Tuesday. The company said "a combination of adverse conditions", not specified in the release, damaged a bearing in the oxidizer side of the turbopump powering the engine in the Briz-M upper stage. That bearing failed during the fourth engine burn of the upper stage, shutting the engine down several minutes early and leaving the rocket's payload, the Yamal-402 satellite, in a lower-than-planned transfer orbit. Engineers were able to maneuver the spacecraft to geosynchronous orbit using its own thrusters. The completion of the investigation clears the way for the Proton to return to commercial service with the launch of the Satmex 8 satellite in March.
<<previous article   next article>>
news in brief
China launches experimental satellite
Posted: Tue, Sep 30 7:46 AM ET (1146 GMT)

Proton returns to flight with government satellite launch
Posted: Sun, Sep 28 8:43 AM ET (1243 GMT)

Sierra Nevada files protest of CCtCap award
Posted: Sat, Sep 27 9:37 AM ET (1337 GMT)

news links
Tuesday, September 30
A highway’s ending is a spaceport’s beginning
The Space Review — 6:18 am ET (1018 GMT)
ULA, Blue Origin and the BE-4 engine
The Space Review — 6:17 am ET (1017 GMT)
Fixing the curse of incumbency
The Space Review — 6:16 am ET (1016 GMT)
Review: The Copernicus Complex
The Space Review — 6:14 am ET (1014 GMT)


about spacetoday.net   ·   info@spacetoday.net   ·   mailing list