29 Mar 2024, 03:23 [ UTC - 5; DST ]
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Post subject: Re: Starship SN-10 - Success! Posted: 03 Mar 2021, 19:33 |
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Joined: 01/16/17 Posts: 93 Post Likes: +59
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Check again Doug, another rapid unscheduled disassembly.
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Post subject: Re: Starship SN-10 - Landed Okay-ish, then the KABOOM Posted: 03 Mar 2021, 20:49 |
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Joined: 11/01/08 Posts: 2626 Post Likes: +645
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:50 mark
[youtube]http://youtu.be/FOnNoDlZipw[/youtube]
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Post subject: Re: Starship SN-10 - Landed Okay-ish, then the KABOOM Posted: 03 Mar 2021, 22:02 |
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Joined: 12/03/14 Posts: 19252 Post Likes: +23615 Company: Ciholas, Inc Location: KEHR
Aircraft: C560V
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Something is wrong with the engine mixtures. Random bursts of sooty exhaust, and different colors for different engines even at the same time (orange, blue, etc). Seems like they have not yet dialed in the raptor mixture control. These two engines are definitely not at the same mixture: Attachment: raptor-mixture-1.png Off mixture wastes fuel or oxidizer and reduces thrust. Maybe they transposed sensors which would lead to both engines ending up at opposite extremes of mixtures. Mike C.
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_________________ Email mikec (at) ciholas.com
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Post subject: Re: Starship SN-10 - Landed Okay-ish, then the KABOOM Posted: 03 Mar 2021, 22:14 |
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Joined: 08/14/13 Posts: 6058 Post Likes: +4636
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Username Protected wrote: Something is wrong with the engine mixtures. Random bursts of sooty exhaust, and different colors for different engines even at the same time (orange, blue, etc). Seems like they have not yet dialed in the raptor mixture control. These two engines are definitely not at the same mixture: Attachment: raptor-mixture-1.png Off mixture wastes fuel or oxidizer and reduces thrust. Maybe they transposed sensors which would lead to both engines ending up at opposite extremes of mixtures. Mike C. Are you trying to resurrect the twin vs single AND the LOP/ROP argument all in one post? Impressive!
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Post subject: Re: Starship SN-10 - Landed Okay-ish, then the KABOOM Posted: 03 Mar 2021, 23:38 |
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Joined: 01/02/08 Posts: 7202 Post Likes: +5102 Company: Rusnak Auto Group Location: Newport Coast, CA
Aircraft: Baron B55 N7123N
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Username Protected wrote: I thought this was about a Beech Starship...I need to get out more. If the s/n didn’t start with NC- it ain’t no Starship!
_________________ STAND UP FOR YOUR COUNTRY
Sven
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Post subject: Re: Starship SN-10 - Success! Posted: 03 Mar 2021, 23:56 |
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Joined: 04/26/13 Posts: 19768 Post Likes: +19436 Location: Columbus , IN (KBAK)
Aircraft: 1968 Baron D55
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Username Protected wrote: Check again Doug, another rapid unscheduled disassembly. It was not a RUD. It was a rapid in-situ de-fueling Maybe don’t bounce the landing next time? Still making good progress. SN11 is up soon.
_________________ My last name rhymes with 'geese'.
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Post subject: Re: Starship SN-10 - Success! Posted: 03 Mar 2021, 23:59 |
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Joined: 01/16/17 Posts: 93 Post Likes: +59
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Username Protected wrote: Check again Doug, another rapid unscheduled disassembly. It was not a RUD. It was a rapid in-situ de-fueling Maybe don’t bounce the landing next time? Still making good progress. SN11 is up soon.
RISDF just doesn't have the same ring to it as RUD does though
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Post subject: Re: Starship SN-10 - Landed Okay-ish, then the KABOOM Posted: 04 Mar 2021, 04:56 |
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Joined: 12/07/17 Posts: 7026 Post Likes: +5805 Company: Malco Power Design Location: KLVJ
Aircraft: 1976 Baron 58
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Username Protected wrote: Something is wrong with the engine mixtures. Random bursts of sooty exhaust, and different colors for different engines even at the same time (orange, blue, etc). Seems like they have not yet dialed in the raptor mixture control. These two engines are definitely not at the same mixture: Attachment: raptor-mixture-1.png Off mixture wastes fuel or oxidizer and reduces thrust. Maybe they transposed sensors which would lead to both engines ending up at opposite extremes of mixtures. Mike C. I’m guessing different throttle settings. One of the objectives on this flight was to test throttle response on the raptors. It would make sense to play with one and not mess with the other one lest your break it. That keeps the third one (which I believe was shut down at the time of that picture) as a reserve for the landing maneuver if the throttle excursions brick one engine.
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Post subject: Re: Starship SN-10 - Landed Okay-ish, then the KABOOM Posted: 04 Mar 2021, 08:22 |
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Joined: 12/03/17 Posts: 8136 Post Likes: +8578 Location: Brevard, NC
Aircraft: Lancair LNC2 - SOLD
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Username Protected wrote: Something is wrong with the engine mixtures. I noticed that as well. The engine on the right is running way too rich. I can't say whether that was intentional...
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Post subject: Re: Starship SN-10 - Landed Okay-ish, then the KABOOM Posted: 04 Mar 2021, 15:07 |
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Joined: 04/26/13 Posts: 19768 Post Likes: +19436 Location: Columbus , IN (KBAK)
Aircraft: 1968 Baron D55
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Username Protected wrote: Good analysis by Scott Manley
Scott's awesome. I retract my "Rapid In-Situ De-Fueling" acronym in favor of his "RUSH": Rapid, Unscheduled Second Hop. And with that we have another Starship milestone: The first prototype to fly twice
_________________ My last name rhymes with 'geese'.
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