Liftoff is scheduled for Monday (Sept. 28) at 8:15 a.m. EDT (1215 GMT).
365 comments
-- they have an orbital launcher with the largest diameter cargo bay
-- larger sats have bigger antennas and bigger PV area and more bus power. this scales as diam^2
-- 26 x Starlink v3 ~40-65 tons to LEO
-- every launch generates revenue, locks out the orbit for competitors.
-- they can launch more volume, more mass and cheaper than anyone else by a large margin
-- the design is validated - things will work
-- there is technical debt, issues but the rocket did the job
Caveats
-- timelines for full reusability are optimistic etc
-- there will be other issues in scaling to launching gigawats into orbit
-- cooling will have to be
-- Musk might go Full Villan mode before the thing works
[meta] I really didn't like that other negative comment getting voted to the top. Looks like it's made by someone who never worked in a bigco. For every bigco I worked, at any time there were hundreds if not thousands of open issues. You could list them and try arguing the company is about to fail and you'd scare people who don't know better.
It's the judgement of the severity of the issue that matters not #no_of_issues. And if there were 0 issues would our job exist?
[edit] getting the formatting right is very hard, maybe we could get a preview / TinyMCE ?
There just isn't much to do in space. You have:
- Telecommunications.. Can scale only so much. Starlink is cool. Compared to Iridium it's way way cheaper. But demand is .. modest? It seems to only beats fiber on the ground in special situations
- Telescopes looking up. This is limited by science budgets that aren't going to change much.
- Telescopes looking down. Those people have infinite budgets and already have all the satellites they'd want. If you're not in NATO then can't depend on SpaceX anyway - so they're not capturing that market.
- Tourism. Vomiting for several hours in zero-G will be a thrill for some for a bit, but I don't see this being a huge industry. Maybe on par with basejumping or something.
- Mining.. seems impractical scifi.. premised on wanting to build huge structures in space - but again, for what goal ultimately?
It's sort of like if you made access to Antarctica 100x cheaper. It'd be great, but it's hard to imagine it's going to suddenly open up a ton of demand.
But I'd love to hear counter arguments :)
-- SpaceX is building a starship factory, not just starship. The market won't deliver enough demand, they need to create their own
-- V3 Starlink constellation targets 100k sats. With 50 sats per flight (100t to orbit) you need 2000 flights to build constellation and then 400 flights per year to replace sats after 5y lifespan.
-- There was that idea of ballistic human travel but this is unlikely to materialize
-- There also was solarsat/powersat where solar power is beamed from space and if you massaged your math the right way the numbers were ~promising
-- AI saves the day. We "need" 1mln AI sats. That solves the demand and justifies the spending. for now
It is not designed to compete with finer. Go somewhere truly remote and see how it’s changing the world very quickly. I’ve seen it first hand in Arctic Canada, Australia and North Africa. Before starlink the best they had was dialup. Now they video chat family and doctors, do school online and so much more. Easily a few billion people will use it.
You also forgot about AI data centres in orbit, on which SpaceX have pegged virtually all their valuation in.
I swear to God LinkedIn would describe taking a shit in a public park this way. The West Coast is out of their damn minds.
Genuinely interested. How does or doesn't an existing satellite constrain other operators from desirable orbits? Is it irrelevant because many satellites can share the same orbit at different phase angles (i.e. satellite train), and there are more than enough similar orbits to go around? How many spacecraft would it take to actually be a concern (accounting for attrition from end-of-life ones going out of service, and the point of crowding where diminishing spatial/temporal buffers available for the collision avoidance adjustments needed to practically maintain your desired orbit become too risky).
full duration full throttle burns of Raptor3 are common and I'm pretty sure a part of qc for each new engine anyway. Payload weight doesn't strain the engines, once they're throttled at 100% then they're throttled at 100% no matter how much or how little payload there is.
Their engineers understand mass, and how to distinguish it.
They push them to the limits in testing/development to make them reliable in production.
Starship still in testing/development.
> Rockets from the Falcon 9 family have a success rate of 99.57% and have been launched 703 times over 16 years, resulting in 700 full successes, two in-flight failures [...], one pre-flight failure [...], and one partial failure [...]. The active version of the rocket, the Falcon 9 Block 5, has flown 633 times successfully and failed once [...], resulting in a 99.84% success rate.
Source: https://en.wikipedia.org/wiki/List_of_Falcon_9_and_Falcon_He...
I guess the next defense will be it only exploded after safely delivering payload
Launch window is 8:15 AM to 9:30 AM eastern time.
Superheavy will land 7min after launch. Starship lands 9hrs post launch.
Edit: Both will be splashdowns (originally said they'll be caught)
SpaceX's flight profile says both are splashdowns?
> During operational flights, SpaceX plans to bring both Super Heavy and Ship back to the launch pad, where they'll be caught by the tower's "chopstick" arms. The company has already done this three times with Super Heavy but has not yet attempted it with Ship.F9 fits how many?
>F9 fits how many?
Zero. Starlink v3 is too big for the F9 payload fairing. It's not just a matter of mass, the diameter and overall volume is important as well. In terms of performance, last I read they're supposed to add 1 Tbps of capacity each, so assuming they all work the first time all 26 would be around 10x the network addition of a full F9 v2 Mini launch. But the larger antennas would have other advantages beyond sheer bandwidth, and they'll be able to start getting more serious about direct to cell.
Don't worry, there is absolutely no chance this will happen in 2028. There are many detailed takedowns of why the "Human Landing System" schedule is preposterous, but here's HN's idlewords:
https://mceglowski.substack.com/p/how-should-we-think-about-...
> This would be an ambitious but achievable cadence for Starship, particularly if the tanker Starships didn’t have to be reusable, and could be made without a heat shield or control surfaces. Just how much time SpaceX has to reach this cadence is an interesting question, since right now NASA and SpaceX are locked in a game of chicken around who can commit to the least realistic timeline. But it probably has to get in gear by early 2027.
This is good evaluation. A launch every week in 2027 is ambitious, but not impossible.
I don't think a week is enough to gather data and fix subsequent launch
An by the way, the whole point of Starship is not just doing it, it is doing it cheaply (by space standards). The whole reusability thing is part of it, and so is the "assembly line" approach that lets SpaceX treat their experimental rockets like fireworks. If the goal was just to lift a lot of mass off the ground, it is not even a great design, reusability in particular is costly in terms of payload capacity.
I suppose we should be grateful that SpaceX has found and collected enough of these crazy people in one place on this mission.
well US government found new toys (proxy war) instead of space
Would HN describe a huge program that didn't do the thing it was designed to do a "feat of engineering"?
I'd also consider the attempts at fusion energy to be very impressive engineering projects even though none have them have yielded a stable source of fusion energy
Hell yeah, that was the longest 10 minutes.
Update: Or maybe not? They're reviewing the status now.
Update 2: Go for orbit!
Update 3: Orbital insertion complete!!
Update 4: First Starlink satellites successfully deployed!
near-orbit was planned, they just had to burn longer. It's in the timeline: https://www.spacex.com/launches/starship-flight-14
But yeah, they had a big decision to make in those few minutes between engine cutoff ang insertion burn.