feed747 rail gun
1 March, 2019Trying to make a kickstarter for this laughable project but some numbers.
max take off weitght=439985kg Crusing speed = 920 km/h
27359 km/h Orbital velocity 20kg payload.
(439985920- 2735920)/439965 = 918.79 you’d only lose like 2km/h on the plane
Air pressure is 14% of sealevel at 747 cruising altitude
From brad: Looks like 70000kg of capacitors will get you 10.4M Wh of energy storage I’m getting 563M Joules to accelerate 20kg to orbital velocity = 156K watt hours And we have 10.4M Wh to work with
76.25meters of runway if you go tail ot nosecone.
Bonus section
I also wanted to use a rockoon to try and win the n-prize
http://www.n-prize.com/
http://en.wikipedia.org/wiki/Rockoon
Weather balloon http://www.amazon.com/30ft-Professional-Weather-Balloon-1200g/dp/B00513FWQI/ref=sr_1_3?ie=UTF8&qid=1387577917&sr=8-3&keywords=high+altitude+balloon
30ft/1200g 7.6lb nominal lift, 15 lbss max lift. 115,0000 (35,000 m) burst
6400
Cost 124:
Let’s assume that
At 110,000 above sealevel.
Propellant needed to get 10 grams has to less that 6 lbs.
Will it be easier to reach speed because of decreased air density too?
Other
Whole kit for 20ft balloon. http://www.amazon.com/Aether-Industries-AI-FIY-Fly-It-Yourself-Balloon/dp/B00DY9J6MW/ref=sr_1_7?ie=UTF8&qid=1387579041&sr=8-7&keywords=Weather+balloon 40ft double price but double the list. Burst Altitude: 120,000
How the hell do we know if we got it in orbit? What kind of radio?
http://en.wikipedia.org/wiki/Specific_orbital_energy http://en.wikipedia.org/wiki/Low_Earth_orbit
