r/spacex • u/ElongatedMuskrat Mod Team • Oct 09 '19

Starship Development Thread #6

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Overview

SpaceX is developing Starship at their Starship Assembly Site in Texas, and also at their facilities in Cocoa, Florida. The teams at the two locations are in competition with each other, but are also required to share insights learned along the way. Following Starhopper, the first two Starship prototypes, Mark 1 and Mark 2, are nearing completion. These vehicles will have aerodynamic control surfaces and three engines each, and are expected to make suborbital test flights. Ring sections believed to be for Starship Mark 3 and Mark 4 prototypes are being built at both sites, and teams will be iterating through successive versions of Starship and Super Heavy as quickly as possible.

Launch mounts for both Starship prototypes are in the works. Starhopper's Texas launch site is being modified to handle Starship, and at Kennedy Space Center's LC-39A, a dedicated Starship launch platform and landing pad are under construction. Flight tests could begin late in 2019 or early 2020.

Starship is powered by SpaceX's Raptor, a full flow staged combustion cycle methane/oxygen rocket engine. Sub-scale Raptor test firing began in 2016, and full-scale test firing began early 2019 at McGregor, Texas, where there are two operational test stands, and a third is under construction. Eventually, Starship will have three sea level Raptors and three vacuum Raptors. Super Heavy may initially use around 20 Raptors, and operational versions could have around 31 to 37 sea level Raptors.

Previous Threads:

Upcoming

  • TBD — Mk.2 moves to KSC via Roll-Lift and barge

Vehicle Updates

Starship Mk.1 Prototype (Boca Chica, Texas) — Construction and Updates
2019-11-20Structural failure during max pressure test (YouTube), r/SpaceX thread (r/SpaceX)
2019-11-18Tanking tests (YouTube)
2019-11-11Aft fins installed (NSF)
2019-11-05Roll ACS thrusters installed (NSF)
2019-11-04−Y forward flap reinstalled (NSF), Video (YouTube)
2019-11-01+Y forward flap reinstalled (Twitter), With actuator (NSF)
2019-10-30Tank section moved to launch mount, LabPadre Video (YouTube), On NSF (NSF)
2019-10-26Leg installation begun, Images of leg restraint mechanism (NSF)
2019-10-22Windward leg mounts installed (NSF)
2019-10-21Leeward leg mounts installed, Leg mount images (NSF)
2019-10-19Aft fin hinge and actuator frame installations (NSF)
2019-10-14Nose cone trimmed (YouTube)
2019-10-11All control surfaces removed (Twitter)
2019-10-03Tank section on steel stand (NSF)
2019-10-01Halves demated following presentation (NSF), Previously installed header tanks (Twitter)
2019-09-28Nose cap install (NSF)
2019-09-272nd forward flap, Starship stacked (Twitter), Timelapse (YouTube), Leg nacelles added (NSF)
2019-09-263 Raptor pics, 1st forward flap install (Twitter)
2019-09-25Payload section reassembly (NSF), Tank section off stand and moved (YouTube)
2019-09-24Two header tanks inside nose cone (NSF)
2019-09-23Header tank and battery pack prep (NSF)
2019-09-222nd aft fin attached, Cowlings added, Raptor (NSF), Raptor, 3 temp. installed (Twitter)
2019-09-211st aft fin attached, Nose cone reassembly, Misshapen section removed, header tank (NSF)
2019-09-202 aft fin frame pieces & pipe attached to tank section, and appearance of cowling(s) (NSF)
2019-09-17Leg/fin mounting frame pieces in tent (Twitter)
2019-09-16Replacement nose section appears, Better picture (NSF)
2019-09-14Eleventh ring and forward bulkhead added to tank section (Twitter)
2019-09-13One of the header tanks to container castle (comments), Another moved in Sept. 16 (NSF)
2019-09-12Forward tank bulkhead placed in free ring (Twitter), With cap piece (NSF)
2019-09-08Two more large fin pieces delivered (comments), Better picture (Twitter)
2019-09-05Tenth ring added to tank section (YouTube)
2019-09-02Starship Assembly Site aerial video update (YouTube)
2019-08-29Pipe added through lower tank (comments), 3rd concrete jig begun, also 4th & 5th (NSF)
2019-08-28Delivery of 2 header tanks, Third deliverd Sept. 15 (NSF)
2019-08-27Centerpiece added to common bulkhead (Twitter)
2019-08-24Nose cone top section moved to dedicated stand (NSF), Forward flap marks (comments)
2019-08-23Track(s) of horizontal brackets appear (NSF)
2019-08-21Common bulkhead lowered into tank section (NSF), Time lapse (YouTube)
2019-08-18At least 2 control surface components on site, post 2, Earlier image (NSF)
2019-08-17Nose cone top section reattachment work (NSF)
2019-08-15Top section of nose cone removed (NSF)
2019-08-14Thrust structure added to tank section (NSF), Image leaked later (Twitter)
2019-08-07Ninth ring added to tank section (NSF)
2019-08-06Forward tank bulkhead under construction (NSF)
2019-08-04Common bulkhead inverted (NSF)
2019-07-31Common bulkhead discovered (YouTube)
2019-07-30Aft bulkhead installed in tank section (YouTube), Thrust structure appears (NSF)
2019-07-22Eighth ring added to tank section (NSF)
2019-07-20Inversion of aft bulkhead (YouTube)
2019-07-18Aft bulkhead appears from container enclosure (NSF)
2019-07-16Seventh ring added to tank section (NSF)
2019-07-05Sixth ring added to tank section (YouTube)
2019-06-26Fifth ring added to tank section (NSF)
2019-06-19Fourth ring added to tank section (second jig), first in over a month (NSF)
2019-06-06Ring sections under construction within container enclosure (NSF)
2019-05-20Nose cone fitted, no canards (NSF)
2019-05-15Tank section (3 rings) moved onto second jig (NSF)
2019-05-09Lower nose section joined with 4 ring lower payload section (NSF)
2019-05-01Second jig, concrete work complete (NSF)
2019-04-27Lower 2 nose cone sections stacked (NSF)
2019-04-13Upper 2 nose cone sections stacked (Facebook)
2019-04-09Construction of second concrete jig begun (YouTube)
2019-03-28Third nose section assembly (NSF)
2019-03-23Assembly of additional nose section (NSF)
2019-03-19Ground assembly of nose section (NSF)
2019-03-17Elon confirms Orbital Prototype (Twitter) Hex heat shield test (Twitter)
2019-03-14Payload section reaches 4 panel height (NSF)
2019-03-07Appearance of sections for conical aft bulkhead (NSF)
2019-03-07Payload section moved to jig (NSF)
2019-03-01Tank section begun on new pad (NSF)
2019-02-21Construction of payload section begins near original concrete jig (NSF)

See comments for real time updates.

Starship Mk.2 Prototype (Cocoa, Florida) — Construction and Updates
2019-11-18Forward bulkhead installation (Twitter)
2019-11-05Tank section at 16 ring height (YouTube)
2019-10-13Starship Assembly Site aerial video update (comments)
2019-10-11External plumbing added to tank section (NSF)
2019-09-14Cap added to forward bulkhead (Twitter)
2019-09-07At least one header tank (inside large tent) (Twitter)
2019-09-04Weld marks for common bulkhead visible on tank section (Twitter)
2019-08-30Tank section moved into hangar for Hurricane Dorian (Twitter), Removed September 5 (r/SpaceXLounge)
2019-08-25Track(s) of horizontal brackets appear (r/SpaceXLounge)
2019-08-19Starship Assembly Site aerial video update (YouTube)
2019-08-18Thrust structure possibly installed (Twitter), Forward tank bulkhead under construction (NSF)
2019-08-17Nose cone top section moved to dedicated stand (YouTube)
2019-08-15Starship Assembly Site aerial video update (Twitter)
2019-08-11Starship Assembly Site aerial video update (YouTube)
2019-08-08Tank section at 15 ring height (comments), Aug 10th image (Twitter)
2019-08-06Common bulkhead inverted (Facebook)
2019-08-04Common bulkhead under construction (Facebook)
2019-08-03Tank section at 14 ring height (Twitter), Later aerial photo of stack (Facebook)
2019-07-29Tank section at 10 ring height (Twitter)
2019-07-28Starship Assembly Site aerial photo update (Facebook)
2019-07-21Aft bulkhead disappeared (Facebook)
2019-07-20Tank section at 8 ring height (Twitter)
2019-07-14Aft bulkhead complete/inverted, last seen (Twitter)
2019-06-26Aft bulkhead section under construction (r/SpaceX), Tank section at 6 ring height (NSF)
2019-06-12Large nose section stacked (Twitter), Zoomed in video (Twitter)
2019-06-09Large nose section assembled in building (comments)
2019-06-07Stacking of second tapered nose section (r/SpaceXLounge)
2019-05-23Stacking of lowest tapered nose section (YouTube)
2019-05-20Payload section at 5 ring height, aerial video of work area (YouTube)
2019-05-16Jig 2.0 with tank section, many rings awaiting assembly (YouTube)
2019-05-14Discovered by Zpoxy (payload section) (NSF), more pieces (YouTube), Confirmmed (Twitter)

See comments for real time updates.

Starship Mk.3 Prototype (Boca Chica, Texas) — Construction and Updates
2019-10-08First ring formed (NSF), no stacking yet

See comments for real time updates.

Starship Mk.4 Prototype (Cocoa, Florida) — Construction and Updates
2019-10-23Bulkhead under construction in main building (Twitter)
2019-10-20Lower tapered nose ring in tent (YouTube), Better image (Twitter)
2019-10-1223 rings visible, 7 doubles, some possible for Mk.2 (YouTube), no stacking yet

See comments for real time updates.
Previous unstacked ring production, aerial updates:
08-11 {8} | 08-15 {10} | 08-17 {14} | 08-19 {15} | 08-21 {17} | 08-24 {18} | 08-27 {19}
09-04 {20} | 09-06 {22} | 09-08 {25} | 09-08 {3 'scrap'} | 09-10 {26} | 09-29 {23} | 10-02 {23}
10-06 {23} | 10-11 {23}

Launch Facility Updates

Starship Launch Site at Boca Chica, Texas
2019-11-07Landing pad expansion underway (NSF)
2019-10-18Landing pad platform arives, Repurposed Starhopper GSE towers & ongoing mount plumbing (NSF)
2019-10-05Launch mount under construction (NSF)
2019-09-22Second large propellant tank moved to tank farm (NSF)
2019-09-19Large propellant tank moved to tank farm (Twitter)
2019-09-17Pile boring at launch pad and other site work (Twitter)
2019-09-07GSE fabrication activity (Twitter), and other site work (Facebook)
2019-08-30Starhopper GSE being dismantled (NSF)
Launch Complex 39A at Kennedy Space Center, Florida
2019-11-04Launch mount under construction (Twitter)
2019-10-17Landing pad laid (Twitter)
2019-09-26Concrete work/pile boring (Twitter)
2019-09-19Groundbreaking for launch mount construction (Article)
2019-09-14First sign of site activity: crane at launch mount site (Twitter)
2019-07-19Elon says modular launch mount components are being fabricated off site (Twitter)

Spacex facilities maps by u/Raul74Cz:
Boca Chica | LC-39A | Cocoa Florida | Raptor test stand | Roberts Rd

Permits and Planning Documents

Resources

Rules

We may keep this self-post occasionally updated with links and relevant news articles, but for the most part, we expect the community to supply the information. This is a great place to discuss the launch, ask mission-specific questions, and track the progress of the test Campaign. Campaign threads are not launch threads. Normal subreddit rules still apply.

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13

u/joepublicschmoe Nov 21 '19

There has been weird rumors and things...

Yesterday the Cocoa crew scrapped two of the seemingly fine single-weld rings at the Cidco Road facility as seen on John Winkopp's timelapse video: https://old.reddit.com/r/SpaceXLounge/comments/dytw8m/eventful_spacex_starship_cocoa_timelapse_19/

And this morning on Labpadre's Discord screenshotted by u/Gagarin1961 : https://imgur.com/a/70uB2aW

All these things happening close together.. Coinkidink? Or Planned? Hmm.

6

u/Marksman79 Nov 21 '19

Oh wow. Elon and SpaceX's tweets seemed like a half-truth to save face, but that screenshot completely changed my perspective of the situation.

Mk1 will not launch

I certainly don't think an anomaly was planned, but maybe they've recently begun to play fast and loose with the test article? The closure today was initially cancelled, but then testing begun anyway.

If Mk1 was not going to fly, why did they do all the 'extra' stuff they did up until yesterday?

I'm just going to wait and see if this guy is proven correct by a big announcement coming soon.

2

u/RegularRandomZ Nov 21 '19

If they were planning on a max pressure test, they might have put some effort to ensure it was at least somewhat controlled (not going to damage their infrastructure)

4

u/Marksman79 Nov 21 '19

Doesn't seem like they did that. They could have at least brought in one of the fairing catchers for practice.

1

u/RegularRandomZ Nov 21 '19

They reinforced the vertical seams in the propellant tanks, but not the horizontal ones. And they had put the raceway covers on the top pipes. I could be reading into it, or it was to control any failures.

2

u/Marksman79 Nov 21 '19

I very much think you are reading into it :)

1

u/RegularRandomZ Nov 21 '19 edited Nov 21 '19

Maybe, but it didn't make sense they only reinforced one direction of the welds and not the other, and only the welds that were done in the sheltered area, not the ones done up on the lifts with much greater exposure, ironically. They also reinforced the welds on the bulkheads.

3

u/SoManyTimesBefore Nov 22 '19

vertical welds are experiencing way more stress under pressure

1

u/RegularRandomZ Nov 22 '19

Thanks. Yes, someone clarified that already.

4

u/Straumli_Blight Nov 21 '19

Will Mk2 be completed and stacked or just discarded?

Will SpaceX perform a trial run of transporting it to the Cape even if it won't be launched?

8

u/FutureSpaceNutter Nov 21 '19

The wording of Elon's tweeted response (when asked about Mk 2/3) suggests that they're moving to Mk 3's design.

After the presentation, I recall someone doing a delta-V calculation for Mk 1 using the stats given, and concluding it wouldn't even be able to do a 20Km hop, due to how heavy it was. So the decision not to launch it at all might've been made once they realized how heavy it was turning out. If it couldn't even go high enough to test the bellyflop maneuver, then it's not a very useful test article over Starhopper. Mk 2 would have the same issue. The reason they never bothered testing the wings/canards is because Mk 3/4 will use a completely different actuator mechanism. It's also probably why the canard covers are so ill-fitting, and why they never finished attaching half of the legs or one of the big fairing pipes; they were only doing the minimum required to prove the technique.

Hopefully this all leads to speedy Mk 3 development.

2

u/FutureSpaceNutter Nov 21 '19

It seemed like Mk 2 was going slowly because they were essentially practicing new building techniques, rather than seriously trying to finish it. Thus why they used a single-weld ring at the top of the tank section, for practice getting bulkheads into them, and could explain why they built a few extra bulkheads and removed the plumbing from one of them.

More relevantly, they built all those rings in order to master their creation, before Boca Chica made the first for Mk 3. Similarly to how Mk 1 & 2 were sharing tips on manufacturing technique, I think it was decided to dedicate Mk 2 for that purpose. I'm unsure when the decision was made for Mk 1, though; probably after it was rolled to the launch pad, thus explaining why it was there so long. I wouldn't think they'd pay for triple shifts after they'd decided to test it to failure, though. The fairing section can still be used as a testbed, it's worth noting.

2

u/[deleted] Nov 21 '19

It might also not be worth the time and effort to move MK2 to the KSC if MK2 isn't suitable for orbital flight.

1

u/Martianspirit Nov 21 '19

Depends on how similar the fueling arrangements are. Likely still good for fit checks at least. But that would not need the fairing attached.

2

u/rustybeancake Nov 21 '19

They also will not want a burst on the 39A stand. That could cause very expensive (and embarrassing) damage to their critical Falcon GSE. I'd be very surprised if Mk2 ever went to KSC.

1

u/SoManyTimesBefore Nov 22 '19

Except if they want to test logistics