The Mathematics Behind a Spacecraft Launch. http://www.nasa.gov/mov/194275main_040_ how_do_we_get_into_space.mov How many tanker trucks would it take to approximate the same mass of propellant being burned during the 2-minute period? note: A typical tanker truck can transport about 9,000 gallons of fuel which weighs roughly 24,500 kgs. Answer: About 48 trucks! By the way, 9,000 gallons of fuel is about how much is needed for a Boeing 767 to fly from NY to LA! The Discovery burns that much in about 2.5 seconds!