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aus+uk / uk.d-i-y / Re: TOT: IM1 Odysseus lunar lander.

Re: Re:TOT: IM1 Odysseus lunar lander.

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From: junk@admac.myzen.co.uk (alan_m)
Newsgroups: uk.d-i-y
Subject: Re: Re:TOT: IM1 Odysseus lunar lander.
Date: Mon, 26 Feb 2024 13:03:28 +0000
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by: alan_m - Mon, 26 Feb 2024 13:03 UTC

On 26/02/2024 11:31, Graham. wrote:
> I've been waiting for Scott Manley's analysis.
>
> https://youtu.be/wynBeg7BYr0?si=D-2QHIWyK2tjQnNQ
>

Pity about the 5 minute embedded advert at the start (and yes I do have
ad blocker)

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Re: Re:TOT: IM1 Odysseus lunar lander.

<l43gllF4tvnU1@mid.individual.net>

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From: junk@admac.myzen.co.uk (alan_m)
Newsgroups: uk.d-i-y
Subject: Re: Re:TOT: IM1 Odysseus lunar lander.
Date: Mon, 26 Feb 2024 13:05:56 +0000
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by: alan_m - Mon, 26 Feb 2024 13:05 UTC

On 26/02/2024 13:03, alan_m wrote:
> On 26/02/2024 11:31, Graham. wrote:
>> I've been waiting for Scott Manley's analysis.
>>
>> https://youtu.be/wynBeg7BYr0?si=D-2QHIWyK2tjQnNQ
>>
>
> Pity about the 5 minute embedded advert at the start (and yes I do have
> ad blocker)
>

Try instead
https://youtu.be/wynBeg7BYr0

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Re: TOT: IM1 Odysseus lunar lander.

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From: nospam@needed.invalid (Paul)
Newsgroups: uk.d-i-y
Subject: Re: TOT: IM1 Odysseus lunar lander.
Date: Mon, 26 Feb 2024 12:15:35 -0500
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by: Paul - Mon, 26 Feb 2024 17:15 UTC

On 2/26/2024 8:05 AM, alan_m wrote:
> On 26/02/2024 13:03, alan_m wrote:
>> On 26/02/2024 11:31, Graham. wrote:
>>> I've been waiting for Scott Manley's analysis.
>>>
>>> https://youtu.be/wynBeg7BYr0?si=D-2QHIWyK2tjQnNQ" rel="nofollow" target="_blank">https://youtu.be/wynBeg7BYr0?si=D-2QHIWyK2tjQnNQ
>>>
>>
>> Pity about the 5 minute embedded advert at the start (and yes I do have ad blocker)
>>
>
> Try instead
> https://youtu.be/wynBeg7BYr0

You can see from Manley's analysis, it's an all-or-nothing
design philosophy. A high CG. A requirement to do antenna
pointing, using the nav capability of the main engine.
It's basically a demo of a nav system... that didn't nav.

And they reason I say that, is the set of assumptions is
frankly ridiculous. It's a brittle design, with no backup
systems. If this is your first craft, it should be hedging
its bets.

The only reason this mission got as far as it did,
was the chance occurrence of one of the payloads
provided by a third party, just happened to be a
nav proxy. And the staff were fast enough at coding,
to tie it in. Are the dynamics of the NASA lidar
(latency) good enough to replace their native system ?
Maybe the reason the roll was uncorrected, is the
loop response wasn't there.

If you're a rocket company, "telemetry sells shares".
You must have an antenna that works, "even if the
thing catches fire". And if that means incorporating
features to get the vehicle upright, that's basically
a dimension of antenna steering.

Paul

Subject	Author
Re: Re:TOT: IM1 Odysseus lunar lander.	alan_m
Re: Re:TOT: IM1 Odysseus lunar lander.	alan_m
Re: TOT: IM1 Odysseus lunar lander.	Paul