eder@ssc-vax.UUCP (Dani Eder) (12/23/84)
> > Anyway, I know that a 747 can fly for at least 12 hours without refueling > because I was on once that did so. If I multiply 12 hours by 8 tons per > hour, does that mean that a 747 can hold over 96 *_TONS_* of fuel? Awesome. Our new 747-300 (Stretched Upper Deck) Has a gross weight of 400 tons, and a maximum landing weight of 282 tons. This means it has to burn off 118 tons of fuel merely to land (assuming you took off with a full tank).> > This got to be fun, so I did some more calculations: > > @ 2 K-gals/hour and 500 mph, the fuel efficiency rating of a 747 would be: > > 500 miles/2000 gallons = 0.25 mile per gallon. (Of course, these estimates > should be used for comparison only. Your actual mileage may vary. |-) > {Particularly during takeoff} Actually the figures are closer to (5480 mile range with full passenger load)/(46000 gallon capacity)= 0.12 mpg. On the other hand, with 496 passengers, that works out to 59 passenger-miles/gallon, about the same as my 76 Impala with 4 passengers + luggage. Of course the airplane travels ten times faster. > > Anyone know the mileage of the Space Shuttle? First 100 miles, I mean? > Also, I'm looking for a larger fuel tank for the V-Dub -- is there a scrap > yard that carries old 747 tanks? The Space Shuttle uses mostly Solid Rocket Boosters in the first portion of the flight, so miles/gallon is not a meaningful measure. The 747 was intro- duced in the early 1970's. Since the planes we build are good for at least 30 years, you will have to wait at least another 15 before you can look for good deals on 747 parts. Besides, since most of the fuel is carried in the wings, won't it be hard to maneuver a car with a 195 foot wingspan? Dani Eder / The BOEING Company / uw-beaver!ssc-vax!eder / 1-206-773-4545 >
mat@hou4b.UUCP (Mark Terribile) (12/28/84)
If you want to talk about high fuel consumption, there's always the Saturn V
main booster (first stage). One of my favorite statistics:
o The Saturn V's main booster consumed 15 tons of fuel per
second. That's 30 000 lb of jet fuel every second --
enough to sustain an F15 for several tens of minutes of
fairly active flight.
o In the last moon shot, the five engines under that sucker
developed an estimated 7 782 000 lbs of thrust -- enough to
lift 19 fully laded 747-300s -- straight up.
--
from Mole End Mark Terribile
(scrape .. dig ) hou4b!mat
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