After two consecutive explosions At the beginning of the year, Spacex has received permission from the US government for the ninth Starship test flight, which has just been announced for the night of Tuesday, May 27. The company has detailed the changes in the ship and the causes of the previous failure.
To the third is the defeated? Starbase technicians have been working frantically to implement improvements in the prototype that will fly in the ninth proof mission of the Starship program. This attempt comes after two consecutive failures of a new version of the ship, known as Starship Block 2.
Spacex has completed countless earth tests. After advancing in the investigation of the previous flight and with the authorization of the Federal Aviation Administration (FAA) in hand, everything is ready for the world’s largest rocket to surf the skies again. If there are no setbacks, the launch window will open on Tuesday, May 27 at 18:30, local time of Texas (01:30 in the morning of Wednesday 28 on Spanish peninsular hours).
Problem solved. In the two previous flights, which took place in January and March, Starship had a premature and explosive ending: the upper stage engines went out ahead, the ship lost control and ended up disintegrating itself into the upper atmosphere, spreading their remains near the Bahamas and the Turkish Islands and Caicos. A hard blow for Spacex, which had requested permission for 25 Starship test flights per year.
The January flight investigation, supervised by the FAA, determined that the flight failure had originated from a liquid oxygen escape and the consequent fire in the ship’s motor compartment, caused by more intense vibrations than expected.
Although Spacex made adjustments for the March flight, the ship failed again, giving rise to endless rumors about a design error In Starship version 2, slightly higher and with a new fuel feed system. The findings of the investigation, newly publishedThey reveal that the second incident was not related to the first, and that the vibrations problem had been solved before flight 8.
What failed on the flight. According to the March flight investigation, supervised by the FAA, the most likely cause of the loss of the ship was a hardware failure in one of its three central raptor engines. The ruling caused an accidental mixture and ignition, which caused an explosion.
Immediately after the explosion, the other two central engines and a vacuum raptor engine went out, causing Starship to lose control again. Spacex believes that the flight termination system was activated after he lost communications with the ship, ensuring its disintegration.
The improvements. Since the vibrations problem had already been solved with the implemented mitigations for flight 8, Spacex has now focused on the upper stage of the upper Starship stage, which have received reinforcements in key joints, a new system of nitrogen purge and improvements in the propellente drainage system.
It is a temporary solution that will cease to be necessary after the introduction of the raptor 3 engine, which has a more minimalist design with the integration of several components and includes reliability improvements to address this type of failures. Anyway, the FAA takes for good changes in the Raptor 2, highlighting that Spacex “has satisfactorily approached the causes of the mishap of flight 8”.
Tuning. A few days ago, the company successfully completed a long -lasting static ignition of the six starship 35 engines, the prototype that it will use in the ninth flight. This test has been an important stumbling block for flight 9 because the ship needed several attempts to complete it.
In a first attempt in early May, one of the engines issued a strong flash and part of its material came out. After the successful ignition, the Ship 35 returned to production facilities for final preparations; Presumably, the load of Starlink satellites and touch -up models in their thermal shield.
How will flight 9 be. The flight profile of the next week will be very similar to that of failed attempts, but with several important milestones. The super heavy rocket that will boost the ship, the booster 14, will be The first to be reused After its previous January flight, in which it rose to the edge of the space, separated from the Starship ship and returned to the launch platform to be trapped in the air through its mechanical arms.
29 of the 33 propeller engines are “second -hand”, although they were performed exhaustive inspections and only one -use components were replaced (such as the ablative thermal shield). Of course, this time it will not be recovered: the booster 14 will maneuver directly on the sea to Try a flight profile More risky, with a quick turn after the separation of stages, a more aggressive angle in the descent and a deliberately off motor in the spareness maneuver.
As for the Starship 35. The ship, on the other hand, will reach more than 160 kilometers of altitude and will demonstrate for the first time the load deployment, launching eight Starlink simulators with its system inspired by the caramels dispensers of fish. An hour after takeoff, it will resent the Indian Ocean to perform controlled ametering.
Beyond overcoming the above problems, one of the pending objectives is to prove the improved thermal shield of the Starship Block 2, which will be crucial to reuse the ship. The previous failures prevented the rocket from reaching the point where this shield comes into play: the reentry.
Spacex has eliminated a significant number of thermal tiles to test vulnerable areas. On flight 9 will try new metal tiles (One of them with active refrigeration) and new capture accessories for future landings. The new alerons of the ship will also be tested during the reentry.
The planes will be further this time. Despite the vote of confidence in Spacex, FAA has imposed some conditions, as the expansion of aerial exclusion zonesboth in the United States and in other countries. The danger zone for aircraft will be extended 1,600 nautical miles to the east from Starbase, crossing the Florida Strait until reaching the Bahamas and the Turkish and Caicos Islands, where the previous ships disintegrated.
This measure will affect 175 flights on more than 70 air routes, causing delays of about 40 minutes; But if Spacex reaches a streak of successful flights, it is likely that the exclusion zones will be reduced again. The next weeks will be crucial for Starship. He Flight 9 Success Not only would it mean to overcome the recent failures, but to give NASA, which awaits a lunar starship to transport astronauts from orbit to the surface of the moon in 2027.
Image | Spacex
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