Jay Fortner

Space nerd among other things

[Jay Fortner @That1Polski]

@TrackingTheSB Why are they messing with us like this? 😤

[Jay Fortner @That1Polski]

@TJ_Cooney Curious if it is unable to maintain attitude with the asymmetric thrust resulting from an engine out scenario. Would be a little surprising but could explain why they couldn’t complete the burn with one

[Jay Fortner @That1Polski]

@paxunova @the_creature107 @Truthful_ast Wouldn’t be surprised if SpaceX has been cooking something up in the background

[Jay Fortner @That1Polski]

@_Testflight_ Next up: 600th reflight of an orbital class rocket

[Jay Fortner @That1Polski]

@Arthurs_rockets Rovers are lowkey worse than planes lmao

[Jay Fortner @That1Polski]

@KenKirtland17 Based on the orbit data I’ve seen the satellite is pretty much dead. It has a decent amount of delta V but nowhere near the thrust to compete with the drag at perigee

[Jay Fortner @That1Polski]

@AtmoPierce @chet_wiltshire @planet4589 @blueorigin @AST_SpaceMobile That delta V with that thrust and the 6.1 ton public mass of the satellite would require over 100 days of continuous propulsion to achieve. No chance at saving it if this is its true orbit

[Jay Fortner @That1Polski]

@OmniAeronautica @EraserheadCap @blueorigin So many thing wrong with this. It was T-4, not T+4, and even if it was T+4, that would put it after stage separation not before

[Jay Fortner @That1Polski]

@NASA_Marshall Are we still in a hold?

[Jay Fortner @That1Polski]

@Mal_active @aphesming @laufyx @Lyrask1 Tbh I would probably try to find a gravity assist around the Mun

[Jay Fortner @That1Polski]

@megagoose11 Thanks a lot

[Jay Fortner @That1Polski]

@Arthurs_rockets That’s just a result of using a prop, blades rotating downwards produce more thrust than those rotating up, meaning you have asymmetric thrust and a yaw moment towards the ascending blade, especially at high power. That’s why having a decent rudder/vertical stab is important

[Jay Fortner @That1Polski]

@CoversEuanD @Flight2Starship All of the engines are static fired before being put on the vehicle. The only purpose of on vehicle static fires is to verify delivery and ignition systems function, which a short static fire does just fine. Anything longer just causes unnecessary wear to the flame trench

[Jay Fortner @That1Polski]

@blueorigin Max-Q at 1:36 really demonstrates the low TWR at liftoff

[Jay Fortner @That1Polski]

@kez611_ @megagoose11 Time warp to the proper orbital alignment for the direction you want to burn

[Jay Fortner @That1Polski]

@jaketropolis Kerbal scientists when they figure out that space near Gilly is just as much of a vacuum as space near Kerbin

[Jay Fortner @That1Polski]

@KerbalNut @SpaceX Usually when SpaceX posts about static fires it means they went well so probably expected

[Jay Fortner @That1Polski]

@moejama64 Probably doable with a Jupiter gravity assist, only need about 11-12 km/s of delta v for that. Also could use Venus and Earth gravity assists. A straight sun dive from Earth is just about the least efficient way to do it and not really possible with any current rocket

[Jay Fortner @That1Polski]

@elchuchii @ControlledPairs @firefly_actual Can still put 3 relays in a lower non-synchronous orbit to cover most of them