Ruptured gas duct blamed for Proton failure
Posted: Tue, Apr 22, 2008, 7:29 AM ET (1129 GMT)
A Russian commission has concluded that a ruptured gas duct caused the premature shutdown of the upper stage of a Proton rocket launched last month, International Launch Services announced Monday. Investigators concluded that the duct, which runs from the gas generator to a propellant pump turbine in the Breeze M upper stage, ruptured late in the second burn of the stage on the March 15 launch, causing the engine to shut down prematurely and ultimately stranding the AMC-14 payload in a transfer orbit; the satellite's owner declared the satellite a total loss earlier this month. The duct likely ruptured because of the combined effects of duct wall erosion, high temperatures and prolonged low frequency pressure fluctuation in the duct, according to investigators. The commission identified a number of corrective actions for both that particular failure as well as steps to improve the reliability of the Breeze M main engine. No timetable for making those changes and returning the vehicle to flight were announced.
A Russian commission has concluded that a ruptured gas duct caused the premature shutdown of the upper stage of a Proton rocket launched last month, International Launch Services announced Monday. Investigators concluded that the duct, which runs from the gas generator to a propellant pump turbine in the Breeze M upper stage, ruptured late in the second burn of the stage on the March 15 launch, causing the engine to shut down prematurely and ultimately stranding the AMC-14 payload in a transfer orbit; the satellite's owner declared the satellite a total loss earlier this month. The duct likely ruptured because of the combined effects of duct wall erosion, high temperatures and prolonged low frequency pressure fluctuation in the duct, according to investigators. The commission identified a number of corrective actions for both that particular failure as well as steps to improve the reliability of the Breeze M main engine. No timetable for making those changes and returning the vehicle to flight were announced.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
US and UK militaries conduct coordinated satellite maneuvers
Posted: Sun, Sep 21 8:30 AM ET (1230 GMT) Blue Origin retires a New Shepard capsule after payload flight
Posted: Sun, Sep 21 8:25 AM ET (1225 GMT) |
|
news links
|
|
Sunday, October 12
Rocket Lab Secures Multiple Launches with Japan Aerospace Exploration Agency (JAXA)
Rocket Lab — 10:51 am ET (1451 GMT) Is NASA losing the moon race? All eyes are on the megarocket launching Monday for answers
CNN — 10:46 am ET (1446 GMT) Scientists use Cassini data to discover new molecules in Enceladus water jets
NasaSpaceFlight.com — 10:45 am ET (1445 GMT) French space defense startup Dark ceases operations
Space News — 10:36 am ET (1436 GMT) The moon cozies up to Jupiter on Oct 13. Here's how to see it
SPACE.com — 10:35 am ET (1435 GMT) |
