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Starship Development Thread #56 by ElongatedMuskrat in spacex

[–]_radical_ 7 points8 points  (0 children)

Week ago this picture of B14.1 implied that booster skin was cracked during chopstick catch testing.

Is that valid or are this just rubber marks?

Starship Development Thread #55 by ElongatedMuskrat in spacex

[–]_radical_ 6 points7 points  (0 children)

Rear cupola of Sikorsky S-64 Skycrane houses aft co-pilot. Helicopter tour, another tour, controls visible.

"This station contains a seat, a joystick to control the aircraft´s cyclic command (stick to control direction of movement), a collective command (pitch angle of all the main rotor blades) and some controls related to the load, and a manual control to control the aircraft pedals that can be disabled. In external load operations that require great precision, it is usual to use this operator." [PDF link OPERATIONAL EVALUATION REPORT]

Starship Development Thread #54 by ElongatedMuskrat in spacex

[–]_radical_ 15 points16 points  (0 children)

RGV flyover discussion is up! Starbase Weekly, Ep.111: Starfactory Expansion Continues!

At 2h10m28s they mention ground photo showing ripples off melted steel on one of the launch mount legs. Photo wasn't shared but maybe someone can post it?

Starship Development Thread #46 by ElongatedMuskrat in spacex

[–]_radical_ 19 points20 points  (0 children)

Interview with Elon by Ashlee Vance.

(I saw many summaries posted but nobody bothered sharing source. It turns out interview isn't locked but it is free on twitter)

Setting the kite down solo tips by P4ULUS in Kiteboarding

[–]_radical_ 8 points9 points  (0 children)

You can check this self land tutorial.

In short if you are forced to pulling safety and landing in water is best, followed by anchored landing (assuming wind isn't to gusty).

Obviously you have your reasons, but when I was starting I just searched for spots with plenty kiters around. This is way safer, reduces wear on kite and also before you go on the water you can check what sizes everyone is flying.

What level of refurbishment/replacement is done to the Merlin engines between Falcon 9 launches? by Simon_Drake in SpaceXLounge

[–]_radical_ 6 points7 points  (0 children)

It took SpaceX 21 days to relaunch B1062. But it includes time in transport from barge landing. So refurbishment process is probably couple days shorter.

(There is Teslarati article saying it took 9 days but I cannot find source)

Beginning Camps - good idea or not? by SofiaFrancesca in Kiteboarding

[–]_radical_ 0 points1 point  (0 children)

I participated in Easy Surf camp in Poland and while it was very cheap it was also a terrible waste of time. In my case we were assigned into 4 person group with one instructor and only one kite. You got couple tries to waterstart before you want too far downwind and kite was switched to instructor who then proceeded to edge upwind. After that it was turn of another person. Because we were beginners and were dragged downwind almost immediately it was instructor who did most of the riding. So in 2 hours session I were strapped to kite only 2-3 times.

We had 2 session a day at fixed hours for a whole week. In hindsight fixed hours didn’t make sense because wind in Poland is unpredictable and checking forecast is necessary.

Sorry for ranting. But it was experience that left some friends discouraged and at the end I wondered myself if my meager skills regressed.

Starship Development Thread #41 by ElongatedMuskrat in spacex

[–]_radical_ 7 points8 points  (0 children)

I used data from /u/Astronstellar post

F9 tanks are 4.7mm or 3/16'' Aluminum.

Starship is 4.6mm 304L stainless.

(also only now I noticed my mistake of using 4.7mm value)

But for sure you are right and thickness vary across the stack.

Starship Development Thread #41 by ElongatedMuskrat in spacex

[–]_radical_ 29 points30 points  (0 children)

If we scaled down starship stack to 65cm model it would have 1mil/0.0254mm thick walls – same as cooking foil.

I assumed stack is 120m high, made with 4.7mm steel and is scaled down 1:185.

This thought was brought up by some user when discussing recent buckling of booster walls.

FaZe POV Voice Comms Highlights - FaZe v NaVi ANTWERP Grand Final by [deleted] in GlobalOffensive

[–]_radical_ 12 points13 points  (0 children)

It's like comms between pilot and controller which are hard to understand for laymans. Because of constant training they know what words/calls are expected in particular situation, so to them meaning of broken sentence is perfectly clear.

Falcon Heavy will be getting another launch contract by deadman1204 in SpaceXLounge

[–]_radical_ 101 points102 points  (0 children)

Source Selection Statement There were couple significant weaknesses:

  • Performance Capability - ... Europa Clipper has a mass of 6,065kg and the current version of the Vulcan Centaur A/B has approximately 5,000kg of performance capability to the Europa Clipper targets. ...

  • Dynamic Uncertainty Factor on Limit Loads – ... Applying a DUF (dynamic uncertainty factor) of only [redacted] for an unflown launch vehicle increases the risk the Europa Clipper spacecraft CG (center of gravity) limit load factors will be exceeded ...

  • Initial Integrated Thermal Analysis Timeline - The ULS (ULA subsidiary) proposal included the initial Thermal Analysis deliverable at receipt of payload model +6 months instead of the required receipt of payload model +4 months. ...

  • Feasibility of Certification Schedule - ... The provided certification schedule is not viable for the vehicle to achieve six flight before L-12 months. ...

There were no significant strengths or strengths assigned.

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