spacetoday.net: space news from around the webin association with SpaceNews


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
Dragon returns to Earth
Posted: Thu, May 21 8:00 PM ET (0000 GMT)

Atlas launches X-37B on fourth mission
Posted: Thu, May 21 7:50 PM ET (2350 GMT)

news links
Thursday, May 21
UB student team to participate in NASA challenge
Univ. at Buffalo Reporter — 7:34 pm ET (2334 GMT)
House passes bill to benefit commercial space industry
USA Today — 7:30 pm ET (2330 GMT)


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