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-   -   SpaceX Falcon 9 Live Landing Attempt (https://www.pprune.org/jet-blast/554107-spacex-falcon-9-live-landing-attempt.html)

Flagon 12th Jan 2015 16:03

Meanwhile, back in the 21st Century - does anyone know how the telegraph pole is kept upright? Presumably extending steerable cruciform fins at the top deployed for the freefall, but is it thrusters or gimballing exhaust for the delicate bit?

MG23 17th Jan 2015 04:03

Originally Posted by henry_crun (Post 8823881)
There is mention here of a cold gas attitude control system:

I believe it's cold gas thrusters outside the atmosphere, fins in the atmosphere with the engine off, and engine gimballing when the engine is running.

Landing video is up, didn't see anyone else post it yet:


Apparently the fins got stuck at a steep angle when the hydraulic fluid ran out, and the engine gimbal couldn't compensate for it and still decelerate enough to land softly.

Unfortunately, from the video, it looks like there won't be many pieces left that are large enough to determine whether it really will be reusable when they land it in one piece. Hopefully next time it will work.

Wasn't this also the first time they did a boostback manoeuvre where it turns around and heads back toward Florida? I think the previous attempts just fell into the sea wherever it was heading.

Edit: here you go, this is how it's supposed to work:


JFZ90 17th Jan 2015 10:07

Despite going wrong as above, that is pretty close, demonstrates they have clearly cracked a lot of the technical challenges to get this far, and a very impressive achievement.

ORAC 10th Feb 2015 06:59

Next try tonight.

ORAC 11th Feb 2015 07:46

SpaceX, Air Force sign deal for landing pad at Cape

SpaceX and the Air Force have reached an agreement to use a former Atlas launch pad on Cape Canaveral Air Force Station as a landing site for returning Falcon rocket boosters.

"The way we see it, this is a classic combination of a highly successful launch past morphing into an equally promising future," Brig. Gen. Nina Armagno, commander of the 45th Space Wing, said in a statement........

Located on "Missile Row," Launch Complex 13 first supported a test of an Atlas intercontinental ballistic missile in 1958, and later launches of unmanned planetary probes for NASA and classified Air Force missions. It was deactivated in 1978 after more than 50 launches and designated part of a National Historic Landmark, according to Air Force records.

"For decades, we have been refining our procedures for getting successful launches skyward here on the Eastern Range. Now we're looking at processes on how to bring first-stage rockets back to earth at the first landing pad at the Cape," Armagno said. "We live in exciting times here on the Space Coast."

JimNtexas 12th Feb 2015 17:59

Yesterday's Falcon 9 launch of the DSCOVR spacecraft to the L-1 point was picture perfect.

According to Elon Musk, the booster fly-back was successful, landing vertically within ten meters of the target.

Sadly, due to 10 meter wave conditions, Just Read The Instructions was recalled prior to what became a water landing of the Falcon 9 stage one.

ORAC 11th Apr 2015 04:34

SpaceX will try again to make history during the launch of its robotic Dragon cargo capsule to the International Space Station on Monday (April 13).

The company aims to bring the first stage of its Falcon 9 rocket back to Earth for a soft touchdown on an unmanned "spaceport drone ship" in the Atlantic Ocean after the booster sends Dragon on its way toward the orbiting lab. Liftoff is scheduled for 4:33 p.m. EDT (2033 GMT) Monday from Florida's Cape Canaveral Air Force Station; you can watch all the action live here at Space.com, courtesy of NASA TV.

WATCH LIVE NOW: HD Views from the International Space Station

TURIN 13th Apr 2015 20:06

Originally Posted by henry_crun (Post 8820759)
NASA says two days to catch up with ISS, so that's sometime tomorrow.

Live feed on NASA TV now.

ORAC 13th Apr 2015 20:37

Launched scrubbed due to weather, another try tomorrow..

TURIN 13th Apr 2015 20:44

Scrubbed due to thunderstorms.

sir 14th Apr 2015 20:23

Falcon is on the way, so far all ok. I caught a glimpse of the mission control crowd behind the windows sort of clapping and sort of looking disappointed - I wonder if stage 1 landing was a very near miss...?

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