<div dir="ltr">"RFA is working on expendable designs, but using super cheap parts (automotive<span class="gmail-Apple-converted-space"> </span><br>grade parts, not aerospace parts), which sounds dangerous at first, but if you<span class="gmail-Apple-converted-space"> </span><br>think about it, cheap automotive grade parts are better quality (more<span class="gmail-Apple-converted-space"> </span><br>consistant dimensions and materials) than manually milled space parts were back<span class="gmail-Apple-converted-space"> </span><br>in the '60s."<div><br></div><div>True that. I started to work only in the early 2000s and it was in automotive. Imagine my shock, when I transitioned into general aviation and I found out that tolerances etc were less strict than in automotive. It's really counterintuitive, but it's like that.</div><div><br></div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>All the best,</div><div><br></div><div><p class="MsoNormal" style="color:rgb(34,34,34)">Frank<u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)"><u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)">Frantisek (Frank) Borsik<u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)"><u></u> <u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)"><a href="https://www.linkedin.com/in/frantisekborsik" style="color:rgb(17,85,204)" target="_blank">https://www.linkedin.com/in/frantisekborsik</a><u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)">Signal, Telegram, WhatsApp: +421919416714 <u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)">iMessage, mobile: +420775230885<u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)">Skype: casioa5302ca<u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)"><a href="mailto:frantisek.borsik@gmail.com" style="color:rgb(17,85,204)" target="_blank">frantisek.borsik@gmail.com</a></p></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Aug 28, 2024 at 5:01 PM David Lang via Starlink <<a href="mailto:starlink@lists.bufferbloat.net">starlink@lists.bufferbloat.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">Rocket Labs is aiming for the small/medium satellite market where customers <br>
don't want to pay for a dedicated flight of a F9, and don't want to wait for a <br>
transporter rideshare program (either because of schedule or to get a specific <br>
orbit). Right now with Electron, they can launch 500-700Kg to orbit vs the F9 <br>
13,000 rtls, 18,000 drone ship, 23,000 expended (falcon heavy can get to 68,000 <br>
expendable)<br>
<br>
Their next rocket (Neutron) will be a reusable 1st stage and super-cheap 2nd <br>
stage with an early design goal of 13,000 drone ship landing payload. It could <br>
be real competition to the F9 (even limited to smaller payloads)<br>
<br>
Rocket Labs is one of the few companies that I expect to survive (as they are <br>
working on a partially reusable rocket), but they will <br>
be a 2nd or 3rd tier provider.<br>
<br>
with the exception of RFA (see below), I don't see any expendable rockets <br>
surviving very long<br>
<br>
ULA talks about possibly modifying a Vulcan to break the engines off the first <br>
stage and landing them, then building a new 1st stage for the next flight (and <br>
2nd stage). Their target is to eventually hit 24 launches/year.<br>
<br>
RFA is working on expendable designs, but using super cheap parts (automotive <br>
grade parts, not aerospace parts), which sounds dangerous at first, but if you <br>
think about it, cheap automotive grade parts are better quality (more <br>
consistant dimensions and materials) than manually milled space parts were back <br>
in the '60s.<br>
<br>
Stoke is working on a fully reusable rocket. It's a very interesting design, but <br>
their current design is for 5,000kg payload capacity (if this design works, they <br>
may scape up)<br>
<br>
Blue Origin is saying they may fly New Glen as early as October. It's 1st stage <br>
is designed to land, and per a recent interview, Jeff Bezos has two teams <br>
working on the 2nd stage, one with the focus of building a reusable 2nd stage so <br>
efficient it makes no sense to use an expendable one, and the other team working <br>
on an expendable 2nd stage so cheap it doesn't make sense to use an expendable <br>
one. If New Glen works, it will be in the same class as a Falcon Heavy with a <br>
design payload of 45,000kg<br>
<br>
SpaceX Starship is designed to be fully reusable and have a payload capacity of <br>
100,000-200,000kg with launch costs in the same ballpark as Neutron<br>
<br>
A few years ago Elon Musk said that fuel for a Starship would run around <br>
$1m/launch and launch pad, manpower, permits, etc run another $1m. Neutron <br>
needs less fuel, but the expendable 2nd stage costs, and (more importantly)<br>
limits the flight rate to the 2nd stage production rate. A lower flight rate <br>
would be fewer flights to spread the fixed costs (manpower, faciliites) across. <br>
So it's a toss-up which would end up cheaper.<br>
<br>
David Lang<br>
<br>
<br>
<br>
On Wed, 28 Aug 2024, Hesham ElBakoury via Starlink wrote:<br>
<br>
> Date: Wed, 28 Aug 2024 04:48:44 -0700<br>
> From: Hesham ElBakoury via Starlink <<a href="mailto:starlink@lists.bufferbloat.net" target="_blank">starlink@lists.bufferbloat.net</a>><br>
> Reply-To: Hesham ElBakoury <<a href="mailto:helbakoury@gmail.com" target="_blank">helbakoury@gmail.com</a>><br>
> To: Dave Taht via Starlink <<a href="mailto:starlink@lists.bufferbloat.net" target="_blank">starlink@lists.bufferbloat.net</a>><br>
> Subject: [Starlink] Formidable SpaceX Challenger<br>
> <br>
> "Elon Musk may soon face a formidable challenger in the space industry<br>
> <<a href="https://www.benzinga.com/news/24/08/40540099/elon-musk-promised-to-make-fully-reusable-rockets-13-years-ago-today-spacexs-starship-is-designed-to" rel="noreferrer" target="_blank">https://www.benzinga.com/news/24/08/40540099/elon-musk-promised-to-make-fully-reusable-rockets-13-years-ago-today-spacexs-starship-is-designed-to</a>><br>
> . Peter Beck, the CEO of Rocket Lab USA, Inc. RKLB, is preparing to launch<br>
> a new, larger rocket that could rival Musk’s SpaceX and potentially disrupt<br>
> the billionaire’s space dominance."<br>
><br>
> <a href="https://www.benzinga.com/news/24/08/40571227/while-elon-musk-is-busy-taking-a-dig-at-boeing-after-starliner-fails-to-bring-astronauts-back-from-i" rel="noreferrer" target="_blank">https://www.benzinga.com/news/24/08/40571227/while-elon-musk-is-busy-taking-a-dig-at-boeing-after-starliner-fails-to-bring-astronauts-back-from-i</a><br>
><br>
><br>
> Hesham<br>
>_______________________________________________<br>
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</blockquote></div>