Dragon's flight to space station put on hold [Spaceflight Now]
Musk said engineers commanded valves in Dragon's propulsion system to repeatedly open and close, hoping to dislodge potential blockage in helium pressurization lines leading to oxidizer tanks supplying three of the craft's four thruster pods.
"We think there may have been a blockage of some kind or stuck check valves going from the helium pressurant tank to the oxidizer tank," Musk said, cautioning that conclusion was just one possibility based on a preliminary investigation. "Whatever that blockage is seems to have alleviated."
うまく起動しなかった3つのスラスタポッドについて、タンクを加圧するヘリウム供給系の閉塞も疑って何度も開閉コマンドを送ったとかなんとか。
■Dragon Rendezvous With Station Set for Sunday [NASA]
NASA TV coverage of rendezvous and grapple on Sunday, March 3 will begin at 3:00 a.m. Eastern time. Coverage of berthing operations on NASA TV will begin at 7:30 a.m.
現在ドラゴン宇宙船は正常に制御されており、日本時間で3日19時〜20時頃にISSへ接近しアームに把持される予定で進められています。
