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VIDEO: Yesterday's Spacex Falcon landing attempt
Spacex ^ | Aptil 15, 2015 | SpaceX

Posted on 04/15/2015 5:06:04 PM PDT by Vince Ferrer

Here is the video:

SpaceX CRS-6 First Stage Landing


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To: Delta 21
Parachute ‘em into the sea. Auto inflate buoyancy, activate lighting/tracking.

Go get ‘em.

Sounds suspiciously like the recovery method used for the Space Shuttle SRBs.


21 posted on 04/15/2015 5:55:50 PM PDT by Yo-Yo (Is the /sarc tag really necessary?)
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To: Yo-Yo

SRB are simple steel tubes, filled with rubber to burn out a hole in the back.

These are true rocket engines (very, very high-speed, super-small clearance turbo-pumps at many tens of thousands of rpm pump cryogenic fuels and liquids, gyro’s, radio, controls, hydraulics .... You CAN’T land that in salt water.


22 posted on 04/15/2015 5:59:13 PM PDT by Robert A Cook PE (I can only donate monthly, but socialists' ABBCNNBCBS continue to lie every day!)
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To: Vince Ferrer
It looks as if the altitude was miscalculated by a good 500 feet and it simply ran out of room to maneuver.
23 posted on 04/15/2015 6:04:01 PM PDT by Kirkwood (Zombie Hunter)
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To: Delta 21
Parachute ‘em into the sea. Auto inflate buoyancy, activate lighting/tracking.

Go get ‘em.

The point of salvaging the booster is to re-use the engines -- which aren't going to respond well to a salt water bath.

24 posted on 04/15/2015 6:04:46 PM PDT by okie01
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To: Delta 21

SpaceX already tried parachutes, but they considered the effort a failure. Salt water is really bad for the rockets. The space shuttle solid rocket boosters landed in the ocean and were reused, but there was so much refurbishment required due to the salt water that it really didn’t save money. This whole design is a way to avoid salt water.


25 posted on 04/15/2015 6:04:47 PM PDT by Vince Ferrer
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To: Robert A. Cook, PE

Better fire up that 3-D printer. We’re gonna need another one.


26 posted on 04/15/2015 6:06:18 PM PDT by Delta 21 (Patiently waiting for the jack booted kick at my door.)
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To: Delta 21

Not if they plan to have people riding in them. Being flung to a semi-random part of the Earth isn’t confidence inducing, especially when it means you’re landing in the middle of an ocean.

It’s one thing to have a good shape going up, but people tend to want to return to Earth - safely. I hope SpaceX figures that out.


27 posted on 04/15/2015 6:23:30 PM PDT by setha (It is past time for the United States to take back what the world took away.)
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To: JRandomFreeper

They should stretch a net across the big hole in Chicago and land them there.


28 posted on 04/15/2015 6:28:05 PM PDT by Jet Jaguar
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To: Vince Ferrer
I get the impression it was coming in way too fast.

Think even if they had it perfectly vertical at touchdown, it would have been too fast to avoid damage.

29 posted on 04/15/2015 6:34:27 PM PDT by The Cajun (Ted Cruz, Sarah Palin, Mark Levin, Mike Lee, Louie Gohmert....Nuff said.)
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To: Vince Ferrer

Too much correcting on final approach. Should have been stabilized at that point, not yawing around.


30 posted on 04/15/2015 6:40:54 PM PDT by doorgunner69
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To: The Cajun

In the videos of SpaceX’s “Grasshopper” test vehicle, the successful landings appear to be much slower.


31 posted on 04/15/2015 6:45:08 PM PDT by Dagnabitt (Islamic Immigration is Treason)
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To: Vince Ferrer

Why can’t they use parachutes and airbags?.......


32 posted on 04/15/2015 6:48:47 PM PDT by Red Badger (Man builds a ship in a bottle. God builds a universe in the palm of His hand.............)
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To: doorgunner69

Too much correcting on final approach. Should have been stabilized at that point, not yawing around.

...

You’re right. Just as with airliners the approach should be stable. The thing is, they’ve landed softly on water when a precise landing spot wasn’t targeted. My guess is the last second corrections are causing the remaining fuel to slosh and moving the center of gravity which could lead to something similar to pilot induced oscillations, but in this case with a flight computer instead of a pilot.


33 posted on 04/15/2015 6:59:34 PM PDT by Moonman62 (The US has become a government with a country, rather than a country with a government.)
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To: The Cajun

I get the impression it was coming in way too fast.

...

It does look that way, but vertical velocity seems to be nearly zero when it gets to the deck, however it wasn’t vertical and there was some horizontal velocity causing it to topple over.


34 posted on 04/15/2015 7:01:19 PM PDT by Moonman62 (The US has become a government with a country, rather than a country with a government.)
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To: cripplecreek

F=MxA

Your rover has about 3% of the mass of this 1st stage, a cg about 20’ lower, and no side winds.


35 posted on 04/15/2015 7:52:22 PM PDT by G Larry (Hillary Hates America, Israel, Capitalism, Freedom, and Christianity.)
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To: DanielRedfoot

ya, there’s this little matter of getting Range Safety approval for the desert landing......


36 posted on 04/15/2015 7:55:12 PM PDT by G Larry (Hillary Hates America, Israel, Capitalism, Freedom, and Christianity.)
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To: Vince Ferrer

Maybe the SpaceX folks could make movies.


37 posted on 04/15/2015 8:06:57 PM PDT by familyop (We Baby Boomers are croaking in an avalanche of corruption smelled around the planet.)
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To: Red Badger
Why can’t they use parachutes and airbags?

Too heavy. Not just the parachute itself, but the reinforcements necessary for the rocket body. The force vector of the rocket exhaust is totally different from the force vector of the parachute yanking at the top of the rocket.
38 posted on 04/15/2015 8:19:05 PM PDT by Colinsky
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To: Vince Ferrer

Dudes need to spring for a few dollars and buy some parachutes.


39 posted on 04/15/2015 8:28:53 PM PDT by PAR35
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To: G Larry

I figured some approval thing, these guys are wicked thought out...


40 posted on 04/15/2015 10:34:46 PM PDT by DanielRedfoot (Creepy Ass Cracker)
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