Quote:
Originally Posted by Bear Islander
I'm not taking the space shuttle. You are comparing apples and elephants.
Spaceship One used 594 pounds of fuel (solid rubber). That is the same weight as 99 gallons of gasoline. I don't think they have released all the specs on Spaceship Two yet, but the weight is about 3 times as much so figure 297 gallons of gasoline. The Nor-Tech's have 300, 360 or 400 gallon tanks.
I will ride just once, my share of the fuel is about the same weight as 37 gallons of gas.
Now go figure the fuel for a family of 4 to fly to Disney World.
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You can't directly compare HTPB consumption to gasoline consumption. HTPB is > 20,000 BTU's/pound while gasoline is 17,500 BTU's/pound.
If you somehow were to do a conversion, SS1 used the equivalent of 678 gallons of gas. SS2 would use about 2,000 gallons of gas (using your 3x multiplier).
2,000 gallons of gas *6lb gallon = 12,000lbs of gasoline. Or about 17 hours of operation of the Nor-Tec at full output, or about 113 end-to-end high-speed lake runs, which is purely theoretical, there is no way it could run at full output for more than a few minutes. In fact I would be somewhat skeptical that the Nor-Tec used 2,000 gallons of gas in an entire season.
Tell us again how your spaceship uses less fuel than the Nor-Tec by some measure?
BTW, this doesn't take into account the nitrous oxide used as the catalyst for the HTPB fuel burn.