Author Topic: SpaceX Starship : First Flight : Starbase, TX : 20 April 2023 - DISCUSSION  (Read 532652 times)

Online FutureSpaceTourist

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 50715
  • UK
    • Plan 28
  • Liked: 85226
  • Likes Given: 38177
twitter.com/teslaownerssv/status/1392989623169667073

Quote
Starship to do an orbital flight from Texas to Hawaii. 🤯🤯🤯 @elonmusk

https://twitter.com/elonmusk/status/1393064162335485952

Quote
3/4 of the way around the Earth

Offline joek

  • Senior Member
  • *****
  • Posts: 4910
  • Liked: 2816
  • Likes Given: 1105
We saw F9 first stages crash onto the drone ship and cause some damage. Seems that the much higher mass SH booster would be a substantial risk to a drone ship. Not all that surprising that they would want at least one dress rehearsal landing on water before risking a ship.

Likely depends on how much confidence they have dealing with off-nominal landing situations. We have seen F9 boosters divert-abort (from drone ship) when it puts the drone ship at risk. If they think they have that covered, expect they might go for it.

Offline Robotbeat

  • Senior Member
  • *****
  • Posts: 39359
  • Minnesota
  • Liked: 25388
  • Likes Given: 12164
So this is interesting and seems to imply they're just gonna get rid of the SS and SH at the end of the flight.

Though I'll admit, I'm a little surprised they don't even seem interested in recovery... not even going to try and land the SH on a  drone ship? Maybe even if they did land it, it would be too much effort at this point to properly secure it and return it to port and they can learn enough from a 'disposable' flight. (I am hesitant to say 'expendable' as they are choosing to get rid of these stages)

We saw F9 first stages crash onto the drone ship and cause some damage. Seems that the much higher mass SH booster would be a substantial risk to a drone ship. Not all that surprising that they would want at least one dress rehearsal landing on water before risking a ship.
Again, nothing in the FCC thing suggest they will be dumping the SH booster into the drink. It suggest the opposite.
Chris  Whoever loves correction loves knowledge, but he who hates reproof is stupid.

To the maximum extent practicable, the Federal Government shall plan missions to accommodate the space transportation services capabilities of United States commercial providers. US law http://goo.gl/YZYNt0

Online FutureSpaceTourist

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 50715
  • UK
    • Plan 28
  • Liked: 85226
  • Likes Given: 38177
https://twitter.com/djsnm/status/1392960208771575813

Quote
And of course the landing is targetted and controlled, but there will be no landing barge, I'm, not sure if that means they'll tow it back or sink it. Given that it's [Starship] gone through reentry there's lots of value in looking at it. (assuming it doesn't break up)

https://twitter.com/elonmusk/status/1393083299526889473

Quote
We need to make sure ship won’t break up on reentry, hence deorbit over Pacific

Offline tater

  • Full Member
  • *
  • Posts: 126
  • NM
  • Liked: 136
  • Likes Given: 264
Again, nothing in the FCC thing suggest they will be dumping the SH booster into the drink. It suggest the opposite.

Exactly.

Starship says "splashdown" and the booster says "touchdown." That can't be accidental.

Offline su27k

  • Senior Member
  • *****
  • Posts: 6414
  • Liked: 9104
  • Likes Given: 885
Again, nothing in the FCC thing suggest they will be dumping the SH booster into the drink. It suggest the opposite.

They'll probably expend the first few SuperHeavy boosters, this is in the latest NSF Starship article:

Quote
The Launch Tower will also sport a crane for mating Starship atop Super Heavy and eventually large mechanical arms that will “catch” the booster when it returns to the launch site.

The latter is not expected to occur during the first few flights, likely resulting in SpaceX undertaking the path it used during the first Falcon 9 booster landings, with a soft touchdown on water.

Same info from reddit sources, they'll probably only fly 16 to 18 Raptors per booster, so not a big loss, they pancaked 12 Raptors just to figure out belly flop.
« Last Edit: 05/14/2021 06:22 am by su27k »

Offline steveleach

  • Senior Member
  • *****
  • Posts: 2405
  • Liked: 2957
  • Likes Given: 1014
Again, nothing in the FCC thing suggest they will be dumping the SH booster into the drink. It suggest the opposite.

Exactly.

Starship says "splashdown" and the booster says "touchdown." That can't be accidental.
I wonder if SpaceX make things deliberately ambiguous and then sit around laughing at all the arguments that result on forums like this  ;D

Offline Slarty1080

  • Senior Member
  • *****
  • Posts: 2754
  • UK
  • Liked: 1877
  • Likes Given: 818
So this is interesting and seems to imply they're just gonna get rid of the SS and SH at the end of the flight.

Though I'll admit, I'm a little surprised they don't even seem interested in recovery... not even going to try and land the SH on a  drone ship? Maybe even if they did land it, it would be too much effort at this point to properly secure it and return it to port and they can learn enough from a 'disposable' flight. (I am hesitant to say 'expendable' as they are choosing to get rid of these stages)

We saw F9 first stages crash onto the drone ship and cause some damage. Seems that the much higher mass SH booster would be a substantial risk to a drone ship. Not all that surprising that they would want at least one dress rehearsal landing on water before risking a ship.
New vehicle and all that must introduce a degree of risk, but I'm not sure its that great a risk. They should be able to model the landing fairly well by now and in general it should be a lot easier to land Superheavy than Falcon 9 as they have the ability to hover SH unlike F9.
My optimistic hope is that it will become cool to really think about things... rather than just doing reactive bullsh*t based on no knowledge (Brian Cox)

Offline Star One

  • Senior Member
  • *****
  • Posts: 14181
  • UK
  • Liked: 4052
  • Likes Given: 220
How about launching a Crew Dragon just a bit later in order to shadow and photograph the partial orbit and re-entry

Sounds very expensive. Cheaper to launch a Falcon 9 with literally nothing but a camera on the second stage. If they want a picture of Starship on orbit, I don't see why they couldn't have a camera which is ejected from starship and sends the images back as it floats away.
Or they will just task a commercial reconnaissance satellite to do the job.

Offline Humuku

  • Member
  • Posts: 21
  • Liked: 20
  • Likes Given: 23
Kauai has the Pacific Missile Range, so it is a good place to get information about your EDL performance, esspecially if it takes you above the Reagan Test Center on Kwajalan beforehand. A full orbit would be problematic, because a malfunction could result in a crash on inhabited land. So I would say: Awesome planning!

Offline libra

  • Full Member
  • ****
  • Posts: 1818
  • Liked: 1230
  • Likes Given: 2357
https://en.wikipedia.org/wiki/Air_Force_Maui_Optical_and_Supercomputing_observatory

It imaged Columbia back in 2003 (sigh  :(  how far in time does that sounds) - it could certainly image an even larger Starship.

Offline DreamyPickle

  • Full Member
  • ****
  • Posts: 955
  • Home
  • Liked: 921
  • Likes Given: 205
I can't believe they are going to attempt this. All the hardware for BN2 and SN20 is at most a few stacked barrels, how are they going to weld them into a full stack in a few months?

Offline uhuznaa

  • Full Member
  • ***
  • Posts: 344
  • Liked: 294
  • Likes Given: 24
Again, nothing in the FCC thing suggest they will be dumping the SH booster into the drink. It suggest the opposite.

Exactly.

Starship says "splashdown" and the booster says "touchdown." That can't be accidental.

This is just an FCC document, don't read too much into these words. Heck, in the image in this document the ship even has windows...

Offline Jarnis

  • Full Member
  • ****
  • Posts: 1314
  • Liked: 832
  • Likes Given: 204
I can't believe they are going to attempt this. All the hardware for BN2 and SN20 is at most a few stacked barrels, how are they going to weld them into a full stack in a few months?

Just like they welded BN1 and SN15 in just a few months.

I'm far more worried about the obital launch pad infrastructure and July is obviously an optimistic target, but launch this year seems pretty likely.

Offline CMac

  • Full Member
  • **
  • Posts: 205
  • Ireland
  • Liked: 110
  • Likes Given: 10
They might reduce suborbital testing and focus on getting the orbital facility up and running. All hands on new facility?

Offline nacnud

  • Extreme Veteran
  • Senior Member
  • *****
  • Posts: 2691
  • Liked: 981
  • Likes Given: 347
They might reduce suborbital testing and focus on getting the orbital facility up and running. All hands on new facility?

Building stainless starship skins is one set of skills,
Building steel framed buildings is another set of skills,
Building ground support equipment and plumbing is another set of skills,
as is building rocket engines, and software, etc

So all these things can happen in parallel.
« Last Edit: 05/14/2021 10:35 am by nacnud »

Offline capoman

  • Full Member
  • ****
  • Posts: 998
  • Ontario Canada
  • Liked: 1443
  • Likes Given: 1332
I’m pretty sure they are not going to do a hop and likely no SH drone ship landing. If they were planning a drone ship landing, they would want to do a hop to test whatever legs that would use. We have seen no evidence of legs AFAIK.

Not sure a hop of SH would tell them much. It’s really just a larger version of SN5 or 6, and the early hops were really about testing Raptor, plumbing and avionics. SH is just stretched version of SN5 and SN6.

Primary goals for this mission are likely:

SS and SH stacking and integration
SH launch and staging
SS reentry and heatshield testing

Secondary goals are likely:

Boost back and targeted return using grid fins for SH, likely on water
Targeted soft landing on water

Not sure what they might do about potential recovery. Safing the vehicles for recovery, partial recovery or sampling heatshield e.g. may be problematic. Might end up as target practice.

Offline spacenut

  • Senior Member
  • *****
  • Posts: 5226
  • East Alabama
  • Liked: 2604
  • Likes Given: 2920
Would they have one of the platforms ready to put out in the Gulf for the SH landing?   

Offline kevinof

  • Full Member
  • ****
  • Posts: 1594
  • Somewhere on the boat
  • Liked: 1869
  • Likes Given: 1262
Doubt it. Nowhere near finished and also needs propulsion, control and positioning. Think they are at least 8/12 months from having anything near that.

Would they have one of the platforms ready to put out in the Gulf for the SH landing?

Offline CorvusCorax

  • Full Member
  • ****
  • Posts: 1921
  • Germany
  • Liked: 4148
  • Likes Given: 2825
Doubt it. Nowhere near finished and also needs propulsion, control and positioning. Think they are at least 8/12 months from having anything near that.

Would they have one of the platforms ready to put out in the Gulf for the SH landing?

The platforms in question already have propulsion, control and positioning, that comes standard with free floating oil platforms. All they need to do is remove all the stuff so there's a clear, level deck.

Like this:

https://twitter.com/Herbo/status/1392556639434256390


Tags:
 

Advertisement NovaTech
Advertisement Northrop Grumman
Advertisement
Advertisement Margaritaville Beach Resort South Padre Island
Advertisement Brady Kenniston
Advertisement NextSpaceflight
Advertisement Nathan Barker Photography
1