Emu Posted March 8, 2016 Posted March 8, 2016 Just read an interesting thread on F-22 fuel capacity. http://www.f-16.net/forum/viewtopic.php?f=33&t=14545&p=317577#p317577 What is the figure manufacturers actually quote for internal fuel? Does it vary cross borders? Do they quote total fuel volume, or usable fuel volume? Does usable fuel exclude reserve?
Seaeagle Posted March 9, 2016 Posted March 9, 2016 Just read an interesting thread on F-22 fuel capacity. http://www.f-16.net/forum/viewtopic.php?f=33&t=14545&p=317577#p317577 What is the figure manufacturers actually quote for internal fuel? Does it vary cross borders? Do they quote total fuel volume, or usable fuel volume? Does usable fuel exclude reserve? It depends on the quality of the source - technical documentation usually include several different figures: 1). Nominal capacity of tanks in space - i.e. litres or gallons. 2). Nominal capacity of the tanks in mass - i.e. kilograms or lbs. 3). Usable capacity - i.e. excluding trapped fuel that cannot be pumped out of the tanks. How much a liter of fuel corresponds to in weight depends on its density - i.e. the fuel type at a particular temperature(15C is often used as reference). The USAF is using JP8, which IIRC corresponds to the NATO standard called "F34", while I believe the USN is using JP5. 1
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