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Space-X Falcon Heavy
 

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Sparky
Joined: 08 Dec 2003
Posts: 16793
Location: Portland, OR

2/6/18 5:30 PM

Space-X Falcon Heavy

How freaking cool was seeing two boosters land back simultaneously? 3:30 in touching down.

https://www.youtube.com/watch?v=pO_j9Amy8u4

They should auction off that Tesla Roadster that went for the ride... Only Musk could afford it maybe... Auction off the title with a free ticket to Mars in the future. ;)


Last edited by Sparky on 2/6/18 7:38 PM; edited 1 time in total

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Brian Nystrom
Joined: 26 Jan 2004
Posts: 4177
Location: Nashua, NH

2/6/18 7:23 PM

An auction would be difficult...

...considering the car is supposed to be orbiting the sun for the next billion years.

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Sparky
Joined: 08 Dec 2003
Posts: 16793
Location: Portland, OR

2/6/18 7:35 PM

Yeah, I corrected myself by saying auction off the title in the last sentence. Symbolic ownership etc.

Why send that direction?

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walter
Joined: 11 Jan 2004
Posts: 4363
Location: metro-motown-area

2/6/18 8:40 PM

success!!!

the big solar orbit was a function of the Big Rocket vs. Small Payload combination -- they had alot of excess ∆<i>v</i> to play with...IMO a solar orbit was an obvious choice when you're looking to make a splash!

<img src=https://scontent.fdet1-1.fna.fbcdn.net/v/t1.0-9/27752584_10214014819436443_333566779922133875_n.jpg?oh=ee4328c16ad86e0d6f164e7998e72bb8&oe=5B108F0D>

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Pino
Joined: 11 Jan 2004
Posts: 151
Location: Apeldoorn - The Netherlands

2/6/18 11:48 PM

Awesome and impressive.
Nice colour car.

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walter
Joined: 11 Jan 2004
Posts: 4363
Location: metro-motown-area

2/7/18 10:11 AM

looks like there were issues with the center booster

some engines didnt ignite for retro burn, crashed at high velocity into drone ship @ landing.

space-flight is complex stuff, booster recovery makes it even harder -- 2 out of 3 aint bad!

they'll get it right. significantly, the outbound portion worked fine.

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daddy-o
Joined: 12 Apr 2004
Posts: 3223
Location: Springfield

2/7/18 11:24 AM

I thought the roadster was supposed to be Mars-orbit bound. Sorry to start negative.

Awesome sight to nail the landings.

Musk did the right thing by making the success threshold "to not damage pad 39A"

A lot of vibration and hot gas, no wonder something seized up.

The SDASM (look it up) has hundreds of Atlas missile development film clips on YouTube. As great as SpaceX is, they are in the third generation of 'lessons learned.' So is N. Korea. Lots of off-the-shelf materials in the 21st century that Kennedy said "...will be invented."

The freedom of free enterprise, SpaceX doesn't have the Air Force saying:
"NO! Use aluminum tubing, not stainless steel and only one fiberglass shield."
Then after it blew up again:
"NO! Use aluminum tubing, not stainless steel and only one fiberglass shield."
Then after it blew up again:
"Ok, stainless and multiple barriers of insulation."
Next flight: First full range success, 1958

The SDASM also has posted film of Charles Lindbergh flying gliders off Torrey Pines, it's beautiful.

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Sparky
Joined: 08 Dec 2003
Posts: 16793
Location: Portland, OR

2/7/18 1:06 PM

OK, so it was only going to sling shot a solar orbital turn and head towards Mars. So ambiguity above cleared up a tad?

Only reports seem to be indicate they expect it to over do the slingshot and wind up missing mars and traveling between Jupiter and Mars in an asteroid belt? Passing Mars BTW approx 11/2018, which blows me away.

I am a little unclear how 93 million miles to get to the sun for a sling shot to Mars which has a 33 million mile perigee to Earth works. Fuel and kinetic speed I am guessing.

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daddy-o
Joined: 12 Apr 2004
Posts: 3223
Location: Springfield

2/7/18 1:11 PM

All that thrust off the pad you think they could spare a ton for a little hypergolic setup to nudge it along after the lox evaporates. Just sayin.

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JohnC
Joined: 10 Jan 2004
Posts: 1936
Location: Glastonbury, Ct

2/7/18 2:16 PM


quote:
I am a little unclear how 93 million miles to get to the sun for a sling shot to Mars which has a 33 million mile perigee to Earth works. Fuel and kinetic speed I am guessing.


No solar slingshotting involved. It's just going directly into a heliocentric orbit, with a (planned) aphelion at about the distance of Mars's orbit.

Except, as noted above, they seemed to have overcooked that burn, so aphelion is a bit further out, somewhere in the asteroid belt. The orbit is probably highly elliptical, so if it stays in orbit, eventually it will make some close passes near Mars, just from random chance.

Or maybe it will collide with an asteroid, which would be cool, too. Slim chance, though; things aren't really that crowded out there.

BTW, further to the whimsical approach, their follow-on project for an even more powerful booster is officially code-named "BFR", which they claim (at least in polite company) stands for "Big Falcon Rocket."

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Sparky
Joined: 08 Dec 2003
Posts: 16793
Location: Portland, OR

2/7/18 2:49 PM

I will comment maybe after I look up a few new words. Perigee was my perigee apparently. ;)

OK then. BFR, seem the F has options, just saying. ;)

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daddy-o
Joined: 12 Apr 2004
Posts: 3223
Location: Springfield

2/11/18 11:58 AM

Speaking of hypergolic, it looks like the fluid used to ignite the braking engines ran dry on the center booster. The fluid triggers spontaneous combustion. That's why it impacted the ocean at 500Kmph.

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