SpaceX sticks the landing!

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Ns1

No Lifer
Jun 17, 2001
55,418
1,599
126
what's happening right now?~?~!

did they already attempt the re-landing?

//.edit

they said they lost visual with the drone ship so they have no idea.
 
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Crusty

Lifer
Sep 30, 2001
12,684
2
81
what's happening right now?~?~!

did they already attempt the re-landing?

//.edit

they said they lost visual with the drone ship so they have no idea.

The current report is that it was a hard landing and one of the legs broke. The expectation is that the rocket tipped over after landing, who knows how well it held up, but if it was anything like CRS-6 you can assume that the rocket is in pieces.
 

Phoenix86

Lifer
May 21, 2003
14,644
10
81
The current report is that it was a hard landing and one of the legs broke. The expectation is that the rocket tipped over after landing, who knows how well it held up, but if it was anything like CRS-6 you can assume that the rocket is in pieces.

Sounds like it hit the mark but too fast, leg broke and fell over, maybe off the platform. Best case it's majorly damaged but somewhat recoverable (for failure analysis), worse case it's in the ocean.
 

Ken g6

Programming Moderator, Elite Member
Moderator
Dec 11, 1999
16,360
4,066
75
The expectation is that the rocket tipped over after landing, who knows how well it held up, but if it was anything like CRS-6 you can assume that the rocket is in pieces.

Like I said that time, they need a set of cables or nets, suspended above the barge, that can swing into position quickly and catch the top of the rocket.
 

Crusty

Lifer
Sep 30, 2001
12,684
2
81
what's happening right now?~?~!

did they already attempt the re-landing?

//.edit

they said they lost visual with the drone ship so they have no idea.

Elon just tweeted:

"Definitely harder to land on a ship. Similar to an aircraft carrier vs land: much smaller target area, that's also translating & rotating."

"However, that was not what prevented it being good. Touchdown speed was ok, but a leg lockout didn't latch, so it tipped over after landing."
 

Phoenix86

Lifer
May 21, 2003
14,644
10
81
Elon just tweeted:

"Definitely harder to land on a ship. Similar to an aircraft carrier vs land: much smaller target area, that's also translating & rotating."

"However, that was not what prevented it being good. Touchdown speed was ok, but a leg lockout didn't latch, so it tipped over after landing."

Well a failed landing leg is a much easier problem to solve vs. hitting the target at the right speed.
 

Crusty

Lifer
Sep 30, 2001
12,684
2
81
Well a failed landing leg is a much easier problem to solve vs. hitting the target at the right speed.

Yep, and also something that is a LOT easier to perform actual testing on(vs simulations).

It's going to be spectacular watching the Falcon Heavy land 2 boosters and the main engine when they get all kinks worked out.
 

PottedMeat

Lifer
Apr 17, 2002
12,363
475
126
from the last spacex stream:

'jason-3 is up there providing extremely high resolution data about the ocean's height'

 

Brovane

Diamond Member
Dec 18, 2001
5,669
1,932
136
Like I said that time, they need a set of cables or nets, suspended above the barge, that can swing into position quickly and catch the top of the rocket.

Will there be a set of cables on Mars?

A key reason for SpaceX doing a full propulsive landing is developing a body of knowledge and technical expertise for a Mars lander. Landing large loads on the surface of Mars will require a propulsive landing like this, parachutes and airbags will not cut it.
 

Ken g6

Programming Moderator, Elite Member
Moderator
Dec 11, 1999
16,360
4,066
75
Like I said that time, they need a set of cables or nets, suspended above the barge, that can swing into position quickly and catch the top of the rocket.
Will there be a set of cables on Mars?

A key reason for SpaceX doing a full propulsive landing is developing a body of knowledge and technical expertise for a Mars lander. Landing large loads on the surface of Mars will require a propulsive landing like this, parachutes and airbags will not cut it.

True. But there won't be an ocean on Mars either. At least for the foreseeable future.
 

Jeff7

Lifer
Jan 4, 2001
41,596
19
81
So how long will it be until Elon starts executing employees by sending them out on these rockets?





Will there be a set of cables on Mars?

A key reason for SpaceX doing a full propulsive landing is developing a body of knowledge and technical expertise for a Mars lander. Landing large loads on the surface of Mars will require a propulsive landing like this, parachutes and airbags will not cut it.
The gravity will be less though, so it won't be damaged as badly when it falls over.



:hmm:
Or do away with the legs and put airbags around the top, then let it fall over.
Falcon 10: "And you thought it looked phallic before."
 
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Brovane

Diamond Member
Dec 18, 2001
5,669
1,932
136
True. But there won't be an ocean on Mars either. At least for the foreseeable future.

The key is the full propulsive landing. The actual target of the landing isn't relevant to the experience they are trying to gain
 

Phoenix86

Lifer
May 21, 2003
14,644
10
81
The gravity will be less though, so it won't be damaged as badly when it falls over.

Less atmo so less speed loss due to friction, also why chutes are bad to rely on. That being said I'd think a 5-6 landing leg system would be better for the very reason this failed. Redundancy.
 

Phoenix86

Lifer
May 21, 2003
14,644
10
81
True. But there won't be an ocean on Mars either. At least for the foreseeable future.

Ocean just means it's that much more precise. Sure, it won't be needed there, but it's very helpful here.

Glad it's mostly recoverable, learn more from a crash with debris than w/o.
 

OverVolt

Lifer
Aug 31, 2002
14,278
89
91
Less atmo so less speed loss due to friction, also why chutes are bad to rely on. That being said I'd think a 5-6 landing leg system would be better for the very reason this failed. Redundancy.

Well when its $10,000 per kg to space, 4 legs is going to have to do .
 

Ruptga

Lifer
Aug 3, 2006
10,246
207
106
Well when its $10,000 per kg to space, 4 legs is going to have to do .

That and the more legs that are added the flatter the landing zone has to be. Any three points define a plane, not so with four or five. That doesn't matter as much now with designated landing zones, but it may matter some on an ocean barge that is pitching.
 

Brovane

Diamond Member
Dec 18, 2001
5,669
1,932
136
Well when its $10,000 per kg to space, 4 legs is going to have to do .

Since the 1st stage doesn't make it to orbital velocity, adding additional mass isn't a one-one trade-off, it is for the 2nd stage.
 

Phoenix86

Lifer
May 21, 2003
14,644
10
81
That and the more legs that are added the flatter the landing zone has to be. Any three points define a plane, not so with four or five. That doesn't matter as much now with designated landing zones, but it may matter some on an ocean barge that is pitching.

I would think length between the legs could adjust for the difference, even on the fly with variable shocks. It failed to lock, it didn't fail to land evenly.
 
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