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The Hangout

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Felix Baumgartner
I am overwhelmed that Felix was able to break the sound barrier today. I am the aerodynamics scientist on this project. Top project speed is 833 mph. My calculated speed is 830 mph. It all worked!
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Re: [460] Felix Baumgartner
Can you explain the science? What is the speed of sound at that altittude compared to sea level? Did he make a sonic boom?
I did a search and realised that I'm not a rocket scientist. Cool
Explanation for dummies please!
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Re: [460] Felix Baumgartner
Like to know how you spot that too
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Re: [Rover] Felix Baumgartner
Yes a sonic boom was created and was heard on the ground while he was supersonic from 100,000 feet to about 70,000 feet.
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Re: [460] Felix Baumgartner
If you'd be willing to share some of your data I'd love to see it. exit weight, CD/area, etc. What kind of position was he in and how did the CD change over the transsonic range. I put some guesses in my reentery model and only came up with 746 mph.

Every time we get togather we keep talking shit about jumping this rocket. The airframe we just flew was 20 inches in diamiter and 34 ft long. We had an early abort on the last flight but the recovery system worked fine and we'll be reflying the same payload on the 3 nov. It was the next launch date we could get from White sands. The 20 inch tube is a new one but if it performs to spec it should be good for a 100 lb pay load to 350,000 ft. I need to bug Phil to run some numbers with a slight hamer head at the top and a softer burn at the end to see how high he could take a heavier payload. I don't supose felix would like a ride?

Lee
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Re: [460] Felix Baumgartner
Why do you think the projected freefall time was so far off? I thought they initially had him pegged for about a minute longer than he actually achieved.
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Re: [460] Feline Baumgartner
Breaking news! Just in, Feline Baumgartner just jumped from the edge of space beating all records and landing on his feet. Amazing!

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Re: [xnewmanx] Felix Baumgartner
It was 20 seconds longer than I projected, most likely due to increased air density from the lower temperatures than I expected between 50000 to 70000 feet. I predicted 240 seconds. It was about 260 seconds.
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Re: [460] Felix Baumgartner
Interesting. I wonder where Redbull got their 5:30 number from...
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Re: [OuttaBounZ] Feline Baumgartner
OuttaBounZ wrote:
Breaking news! Just in, Feline Baumgartner just jumped from the edge of space beating all records and landing on his feet. Amazing!
[image]http://thumbs.newschoolers.com/index.php?src=http://25.media.tumblr.com/tumblr_mbwwsbmzcN1qewacoo1_r1_400.gif&size=400x1000[/image]

Win!!!!! LOL

Walt
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Re: [waltappel] Feline Baumgartner
http://www.youtube.com/watch?v=Veg63B8ofnQ
- the video that inspired Feline to learn spacejumping
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Re: [jumpkks] Feline Baumgartner
The wicked envy and hate. It's their way of admiring.

Victor Hugo