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Path: news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail
From: Cryptoengineer <petertrei@gmail.com>
Newsgroups: rec.arts.sf.written
Subject: =?UTF-8?Q?Re=3A_=E2=80=9CSpaceX_reached_space_with_Starship_Flight_?=
 =?UTF-8?Q?9_launch=2C_then_lost_control_of_its_giant_spaceship_=28video=29?=
 =?UTF-8?B?4oCd?=
Date: Tue, 3 Jun 2025 15:05:52 -0400
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On 6/2/2025 4:36 PM, Lynn McGuire wrote:
> On 5/30/2025 12:23 PM, Cryptoengineer wrote:
>> On 5/29/2025 3:55 PM, Lynn McGuire wrote:
>>> On 5/29/2025 4:05 AM, Robert Carnegie wrote:
>>>> On 29/05/2025 00:07, Lynn McGuire wrote:
>>>>> “SpaceX reached space with Starship Flight 9 launch, then lost 
>>>>> control of its giant spaceship (video)”
>>>>>
>>>>> https://www.space.com/space-exploration/launches-spacecraft/spacex- 
>>>>> launches-starship-flight-9-to-space-in-historic-reuse-of-giant- 
>>>>> megarocket-video
>>>>>
>>>>> “SpaceX launched its Starship megarocket for the ninth time ever 
>>>>> today (May 27), on a bold test flight that featured the first-ever 
>>>>> significant reuse of Starship hardware.”
>>>>>
>>>>> “Starship‘s two stages separated as planned on Flight 9, and the 
>>>>> upper stage even reached space, which was an improvement over the 
>>>>> giant vehicle’s most recent two flights. But SpaceX ended up losing 
>>>>> both stages before they could accomplish their full flight goals.”
>>>>>
>>>>> “”Starship made it to the scheduled ship engine cutoff, so big 
>>>>> improvement over last flight!” SpaceX CEO Elon Musk wrote on social 
>>>>> media after the flight. “Leaks caused loss of main tank pressure 
>>>>> during the coast and re-entry phase. Lot of good data to review.” 
>>>>> Musk said the next three Starship test launches could lift off 
>>>>> every three to four weeks in the days ahead.?
>>>>>
>>>>> Bummer.
>>>>
>>>> Next they're going to explode when they
>>>> come down.  Has this been thought through?
>>>
>>> This is engineering development at its finest.  Simulation only gets 
>>> you so far.
>>>
>>> SpaceX is working an incredibly complicated problem.  Weight versus 
>>> fuel and thrust.  The materials are also a serious complication as 
>>> the temperature of outer space is extremely variable from cryogenic 
>>> to hot (the unfiltered Sun shining on parts).
>>
>> SpaceX fully expected to lose the booster on the way down. They were
>> testing using a higher angle of attack approach to reduce required
>> fuel, and also intended to simulate loss of a atmospheric engine
>> on the way down, to see if one in the outer ring could compensate.
>>
>> The (different) problems that led to the loss of Starship on flights
>> 7 and 8 appear to be solved, but a leak in one of the fuel tanks led
>> to a loss of pressurization, making attitude control impossible.
>>
>> The door for the 'pez dispenser' to release satellites didn't work,
>> not clear why.
>>
>> pt
> 
> The new version 3 Starlink satellites are huge, the size of a 737 
> according to Musk.
> 
> Lynn
> 
Cite? They have to fit in Starship's 9m wide cargo bay.

pt