It’s, perhaps, a silly question. Or maybe just a question too obscure to be answered.
But still, I must ask…does anyone here happen to know what the fuel capacity of Boeing’s 2707-200 SST would have been?
I’ve found out that the specific fuel consumption of the SST’s four engines would have been 1.040 lbs. of fuel per pound of thrust per hour, if that’s of any help. (Which it probably isn’t)
Well…thanks for your patience,
Ranchoth
VERY roughly speaking:
your link gives a ballpark -
Max ramp weight = max weight the thing can carry (plane, passengers, cargo, crew, FUEL) = 675,000 lb
Max Landing Weight = what the gear will support on landing (plane, passengers, cargo, whatever fuel is left) = 430,000 lb.
The difference is largely (but not exclusively) the max fuel the plane can carry (it assumes the tanks are full at takeoff, and all fuel is exhausted during flight, which (hopefully) does not happen): 675,000 - 430,000 = 245,000 lbs.
Again, to be really rough, flight plan an even 6.0 lb/gallon:
245,000/6 - 40,833 gallons.
(or, you could email Boeing and ask)
Hmmm, not really. Max landing weight is a structural limit imposed by the strength of the landing gear. It has nothing to do with the fuel load. All you could say from the difference between Max Take Off Weight and Max Landing Weight is that the aircraft carries at least that much in useable fuel plus reserves, it may carry a lot more though.
Eg: Dash-8 aircraft we fly carries around 7.5 hours of fuel with reserves remaining but the difference between Max Take Off Weight and Max Landing Weight is around 1 - 1.5 hours in fuel.