From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-x52a.google.com (mail-ed1-x52a.google.com [IPv6:2a00:1450:4864:20::52a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 5A2AE3B29E for ; Sat, 12 Feb 2022 14:42:52 -0500 (EST) Received: by mail-ed1-x52a.google.com with SMTP id z21so49853edb.13 for ; Sat, 12 Feb 2022 11:42:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=nJTIOyovMbr5OgPW59LGf1OccHeuBBeoh/F1p7JDrA8=; b=oFzNcI5Sp0JN4P5hwQtm2CpEcXUVDp3g1n/XgxERqETgfh9eLm8ieyJjOL4yadCgIx 3DifC8DWfjUBBboPL1Wt4HFQXfPuUQc57enMUyiq8f5ULbyGuuGwbBMEQCFQQzB80u4L wqQ+X5pZdoNNwOlyZvM9pshiRvZVl+mqNNZg1s414RvdxwI/OqH/6xIOu7CErAZBwwTo byivKazOu6TvYzgATU5wfnAprjL2ddyUhAYUJ7hf3ogyUz9UazG3AR54k+PBV06RH48t tyfGnuUULym1CujqWLhRM6oUVYm9gtR4DqtX5O7oEy9RD+BSQ4MNvJNGBKyAuK5OXLz9 Yx+g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=nJTIOyovMbr5OgPW59LGf1OccHeuBBeoh/F1p7JDrA8=; b=Xa3DP2dJ4SwkNdRiX4jawIkRlQbyB02QzBR6dIYOpByz/uCbSKvjQkfL3s9BAxqh2T xoxzuJlg1JYZsB9lE9yVe5SmS/wPiyU/0maHDmtJK5Geq3EE9LpBGGS4J6t8R67VGKRV IFBvT/TB5wZ2c6vCTbu/dZ3dBppcEN6hGNPhO6UtPdXaUYiTWuMiaYELx7s6BpUbhk0a GS7AXWgHY12jVLJ0OCHTZpAlObxs7g8gwS8rljxIX5KqaPUYYlDQhA2KpKBReoZtJ2h+ 4oG2JOL7MqE8Ip6/rslCoSpJCVKTM9MDeae7Vd5wzodAqgxFtx7BiX0CSAURdxFSGYef TeXw== X-Gm-Message-State: AOAM5327sf2NLubs5NyhENmaQcz+eAdnHp9Lpu/19cVDy3Ip5zfQWyXc tKVnvvElxYAZYn/fKrqqHQNXu6TWEOegTS6VnnqNXcXQ17Y= X-Google-Smtp-Source: ABdhPJxHgfr2sqXja0GOASQXJTgj9X7eVzApmqscKcI73YQ9ASUCW5Mk8A0as7F/6bn5HcArYJ9FKwj/SftmTC+WlBQ= X-Received: by 2002:a05:6402:4415:: with SMTP id y21mr7822579eda.162.1644694971113; Sat, 12 Feb 2022 11:42:51 -0800 (PST) MIME-Version: 1.0 References: <20220212103610.576e44b1@spidey.rellim.com> In-Reply-To: <20220212103610.576e44b1@spidey.rellim.com> From: Dave Taht Date: Sat, 12 Feb 2022 11:42:39 -0800 Message-ID: To: "Gary E. Miller" Cc: starlink@lists.bufferbloat.net Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [Starlink] saving ship 20 X-BeenThere: starlink@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Starlink has bufferbloat. Bad." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Feb 2022 19:42:52 -0000 On Sat, Feb 12, 2022 at 10:36 AM Gary E. Miller wrote: > > Yo Dave! > > On Sat, 12 Feb 2022 09:01:50 -0800 > Dave Taht wrote: > > > (is there a good email list for spacex, rather than starlink stuff? > > I'm really not into twitter, reddit, etc) > > > > After watching elon musk's presentation thursday night I was struck by > > the symbolism of ship 20 behind him and wondering why the planned > > flight was to attempt a splashdown at the end. > > I agree this is not the place, but if not, where? I used to haunt an alt.space list that I can no longer remember the name of= . > > > I could think of a more leapfrog-like approach where they left it in > > orbit, to analyze the effects of a longer term stay there, testing > > restarts, or vacuum welding problems on the engines, using as a > > agena-like target for rendezvous maneuvers, trying out repairing or > > replacing various parts... > > It is very hard to inspecct a booster in space. One of the big wins for > the returnable rocket has been the after action failure analysis. You > can see all the things the almost screwed the mission, Then improve them > for the next one. Having a pause to inspect the lost tiles, and assess the damage before even attempting re-entry strikes me as a good idea. I hope they've lined up some good telescopes this time to take a peek at it. Always sad we didn't get that done for columbia. Developing the capability to do on-orbit repair, also is a good goal. A small robot to do external inspection? It seems pointless to attempt re-entry if you determined it was going to fail and seems better to plan on exploring other options. > > And, as we have seen many times, getting back in one piece is the hardest > part to get right. So why not have a plan B involving staying in orbit, rather than burning up= ? > > > Do they not have enough thrust, even with an empty payload bay, to > > stay up there? > > I'm sure they do, but to stay up they would need a course corrction > or two. testing restart seems smart. > > Is there a dummy payload planned? I was thinking of one of bigalow's > > demo inflatable habs, and along that rathole was, why not just cut a > > hole in the side and spray in insulation... > > Maybe another Tesla? Something cheesier than that. But I could envision instruments, at least. > RGDS > GARY > -------------------------------------------------------------------------= -- > Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 > gem@rellim.com Tel:+1 541 382 8588 > > Veritas liberabit vos. -- Quid est veritas? > "If you can't measure it, you can't improve it." - Lord Kelvin > _______________________________________________ > Starlink mailing list > Starlink@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/starlink --=20 I tried to build a better future, a few times: https://wayforward.archive.org/?site=3Dhttps%3A%2F%2Fwww.icei.org Dave T=C3=A4ht CEO, TekLibre, LLC