/diy/ - Do It Yourself

>>581397
>>581490
>>581527

>>531410

>>276785
you asked /diy/ a question, got it answered in 30 mins-pretty fast for this board- then you asked him a question and called the guy retarded. >>276769 told you why he was right and you called him retarded. You then decided that buying would be better than diy. Please stick to other boards with your flaming, retard.

>>267618
... The space shuttle doesn't fucking launch from a 747. Ever.

Sage goes in every field for this troll.

Using buoyancy to lift your missile can save you say, 300kj of energy per pound
Getting into low earth is 16Mj per kg

300,000 1,600,000. You see how big the difference between those numbers is? It's real big.

If you get your rocket up 100,000 ft. You still need 1.3 million joules to get into orbit. So you need enough balloons to carry 96% of your launch vehicle.

Go to http://kerbalspaceprogram.com/index.php, play the demo, and keep in mind it is a grossly generous and optimistic simulation.

I don't want to discourage you.

You can get a rocket and shoot it off of a balloon, and it will go far. But you absolutely are not going to get it into orbit any easier than if you just launched it from earth. You are already dumping so muny resources to it that you may as well just design it to launch from the earth so you don't have to deal with all the complications of a balloon.

Look up the Caleb rocket
"So a 16' x 2' air-launched solid (Caleb) can at least theoretically get a 15 lb payload to orbit, with a payload-to-mass ratio of .5%. Can't find altitude info on Caleb, but Project Pilot was launched at 41k feet. "

http://forum.nasaspaceflight.com/index.php?topic=2847.0 I found this thread. it's 6 years old, and it's exactly the same as the one you just posted here.

>>249728
No hard feelings anon.

Yeah, engineers keep getting screwed. Even if you get hired, the career trajectory sucks. You're out of school, and you're more than half way to the top of what you can expect your max salary to be unless you move into management.

Was going to teach with history expecting to pass the written exam, and realized my mind is incompatible with the questions they pose in the English section and I will fail every time, no matter what I study because English teachers are just that crazy to me. (Took English 102 11-12 times because teachers kept being retarded)

My (least) favorite teacher was the one who insisted the gay/mexican authors were good BECAUSE they were gay/mexican, not because their writing was any good. AND AND that Smallpox was still endemic to third world nations.

Walked out of the class, went to the registrar and dropped the class the day we were having the seminar where the teacher defended the position of the ignorant smallpox student.

The trolls have discovered /diy/

>>226015
Fuck you. This is /diy, not let me do that for you.

Be over 18 and buy some KRYLON FUSION PAINT.

Why are you so retarded you can't youtube for a spraypaint demo?

Fuck it