今次又測試 D 乜
The upcoming flight will aim to complete
similar objectives targeted on the previous flight test, which debuted the Starship and Super Heavy V3 vehicles, while also
carrying next-generation Starlink V3 satellites for the first time.
Watch “Critical Path”, the latest episode in the ongoing Starship series that followed SpaceX engineers and technicians through the final days before launch of the first Starship V3.
The
booster’s primary test objective will be executing a successful launch, ascent, stage separation, boostback burn, and landing burn at an offshore landing point in the Gulf of America. There have been several modifications to hardware and software to address issues seen on the previous flight.
上次booster失敗結論: At stage separation on Flight 12, slight differences in engine startup on the ship caused the directional flip of the booster to be off by approximately 90 degrees. The
startup sequence has been modified to be more robust to timing variability and more reliably flip in the desired direction, which is done to increase overall performance. After stage separation and the flip, the Super Heavy booster attempted its boostback burn.
Five of its 33 engines experienced issues when attempting to re-light causing the boostback burn to end early. The Super Heavy on this upcoming flight has
hardware modifications to improve re-light reliability along with
updates to engine alarms and aborts to match the conditions seen in the multi-engine flight environment.
The
Starship upper stage’s primary objectives include the deployment of 20 Starlink V3 satellites, a relight of a single Raptor engine while in space, and another controlled entry, descent, and splashdown in the Indian Ocean. There have also been
several modifications to Starship’s propulsion system to address the engine out issue experienced on the previous flight.
Approximately 40 seconds after stage separation, Starship lost one of its three Raptor vacuum optimized engines. The vehicle was able to demonstrate its engine out capability and reach its planned suborbital trajectory.
Several hardware and operational modifications have been made to address the interconnected causes with additional reliability improvements planned in upcoming versions of the Raptor engine.
