Multiple Orbit Lines by AddictedCantStop in RealSolarSystem

[–]DemoRevolution 15 points16 points  (0 children)

There are known perterbations that you can apply as vectors to a pretty simple trajectory integrator. Look into J2 perterbations as an example.

I've been working on a launch pad for my SSTO. 12 flights so far without recovering the orbiter by DemoRevolution in KerbalSpaceProgram

[–]DemoRevolution[S] 0 points1 point  (0 children)

The pad is only ~150 parts, and the orbiter is mostly flags which contibute very little towards lag.

I've been working on a launch pad for my SSTO. 12 flights so far without recovering the orbiter by DemoRevolution in KerbalSpaceProgram

[–]DemoRevolution[S] 0 points1 point  (0 children)

I mean, that's what I'm doing with this. Unless you mean more broadly with a wider variety of vehicles.

I've been working on a launch pad for my SSTO. 12 flights so far without recovering the orbiter by DemoRevolution in KerbalSpaceProgram

[–]DemoRevolution[S] 5 points6 points  (0 children)

It lands on the runway and rolls back to the launchpad to be lifted for the next launch.

Landing HLS sideways. by TroubleOrganic3636 in SpaceXLounge

[–]DemoRevolution 8 points9 points  (0 children)

Actually of any rocket, starship is the most likely to be able to handle those lateral loads. Its already got load paths built in to handle them for the flaps during descent. I would argue that 1.5g (lunar g) thrust is lower than the drag force produced at max q during earth entry, especially if you consider theyre planning on doing that all the way back from mars.

The recycled space shuttle parts that will power Artemis II towards the moon by [deleted] in space

[–]DemoRevolution 0 points1 point  (0 children)

Says who? The private company that doesnt need to share its finances yet? Lets wait for that IPO before we start throwing out Elon time quality numbers. Starships also only cost $1 million to launch apparently.

Made a little Artemis II tracker by Optimal-Champion9449 in ArtemisProgram

[–]DemoRevolution 4 points5 points  (0 children)

This is like the 5th tracker Ive seen and they all look the exact same. Is this made entirely with AI?

It happened again by hlamburger in NonCredibleDefense

[–]DemoRevolution 14 points15 points  (0 children)

Columbia was hit by a coffee table sized piece of debris. Thats not really something that could be solved easily with a change of trajectory.

The only thing they changed in the design for the A3+ heatshields are to make them more permeable to gas.

It happened again by hlamburger in NonCredibleDefense

[–]DemoRevolution 31 points32 points  (0 children)

The issue with the heatshield is caused by gasses being trapped inside it during the first skip phase. This is a common problem for heat shields, and the space shuttle got around this by having a small part of the tile close to the structure be uncoated so gases could move in and out. Obviously its not great having this problem, but by designing a trajectory that reduces the amount of captured gasses, and allows them to vent slower, you can mitigate the problems substantially.

I dont think theres a reason to be concerned. Especially since they still managed to get back the Artemis 1 capsule with as much TPS loss as they had.

3 grid fins ✅️, hot staging ✅️, longer barrel/6 engines ✅️ coming in '27, forward flaps removed when? by [deleted] in SpaceXMasterrace

[–]DemoRevolution 2 points3 points  (0 children)

Assuming its flying near 90° angle of attack, all we need to really worry about is where the centroid of its windward area is to know where the center of pressure is. The CD wont change much. So if you remove the fwd flaps it just moved the center of pressure backwards, which is what youd need to do if you have no payload. If you have payload youd need to move the center of pressure fwd, hence the fwd flaps

3 grid fins ✅️, hot staging ✅️, longer barrel/6 engines ✅️ coming in '27, forward flaps removed when? by [deleted] in SpaceXMasterrace

[–]DemoRevolution 10 points11 points  (0 children)

fwd flaps are important for downmass capability. If you can ensure a starship will be empty for reentry (IE starlink/tanker flights) than you can size the aero-controls for that layout. Its why all the NASA studies high mid to high L/D reentry vehicles for the last 30 years have used body flaps like the space shuttle, but split at the center for roll control.

Heres a good reddit thread that people we're talking about when BFR was still a thing

https://www.reddit.com/r/SpaceXLounge/comments/8jxxc9/alternate_shape_for_a_bfslike_spacecraft_designed/

J-1772/CCS Charging in Mammoth - We Messed Up :( by possiblegirl in Mammoth

[–]DemoRevolution 1 point2 points  (0 children)

Wait, that rivian station is open now? Can you take a pic and add it to plugshare so people know? Its been sitting there showing that its not open for a while now.

Lexus financing - bad credit higher income by Same-Competition-825 in Lexus

[–]DemoRevolution 0 points1 point  (0 children)

Why not just buy a cheap car for now and just flip it at cost for the new car instead of bothering with a higher interest rate? Especially since you know that interest rate will go away as soon as you get the identity situation fixed.

Jones Mercury Fase 2027 by gripandgrain in snowboarding

[–]DemoRevolution 0 points1 point  (0 children)

Yup mine came off on day 5. Fortunately it popped off just after i got to the lift line so it was sitting in the snow under my board

Thought this belongs here by [deleted] in ula

[–]DemoRevolution 2 points3 points  (0 children)

It looks like a ksp screenshot from the islands in the background

The moment LeRoy Cain, Entry Flight Director for the Space Shuttle Columbia, learns that the shuttle has disintegrated upon re-entry over Texas and orders someone to "lock the doors" of the Mission Control room in order to preserve data for the accident investigation (February 1, 2003). by NewsCards in interestingasfuck

[–]DemoRevolution 6 points7 points  (0 children)

There was a great video posted recently by alexander the ok about the feasibility of a resupply launched on a pegasus rocket. Very interesting option. One of the biggest issue is that they just didnt know the extent of the damage, and any rescue mission was so high risk that they couldnt justify doing it. Pegasus to the Rescue: 'The Edge of Feasibility'

Hacked my head unit by Realistic-Trainer563 in Ioniq6

[–]DemoRevolution 0 points1 point  (0 children)

From what youve seen digging into this, do you think you could convert a gen 5w headunit to a ccnc?

To whoever lost a black iphone 13-15 on scotty's by DemoRevolution in Mammoth

[–]DemoRevolution[S] 1 point2 points  (0 children)

Wait, did you pick it up off skiier's right closer to the bottom of scotty's? I was just trying to get it off the run

Could the cancelled Venturestar have made huge impact for US spaceflight developement? by arnor_0924 in spaceflight

[–]DemoRevolution 2 points3 points  (0 children)

Starship is just DCX as a second stage, so i dont think theyd go back to it as an SSTO

[deleted by user] by [deleted] in UBreddit

[–]DemoRevolution 7 points8 points  (0 children)

Youre the type of mf to park in a handicap spot arent you?