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The fuel time limit for powered aircraft is fixed by the available fuel (considering reserve fuel requirements) and rate of consumption. Some aircraft can gain energy while airborne through the environment (e.g. collecting solar energy or through rising air currents from mechanical or thermal lifting) or from in-flight refueling.
In aircraft, loading less than full fuel for shorter trips is standard practice to reduce weight and fuel consumption. For this reason, the useful load fraction calculates a similar number, but it is based on the combined weight of the payload and fuel together in relation to the total weight.
With a fuel fraction of nearly 85%, the GlobalFlyer could carry 5 times its weight in fuel.. In aerospace engineering, an aircraft's fuel fraction, fuel weight fraction, [1] or a spacecraft's propellant fraction, is the weight of the fuel or propellant divided by the gross take-off weight of the craft (including propellant): [2]
The AEV 3 Kodiak shares a common powerplant (the MTU 873 Ka-501) with the Leopard 2 MBT. In common with the Leopard 2 MBT, the AEV 3 Kodiak is powered by a powerpack assembly consisting of an MTU 873 Ka-501 V-12 diesel coupled to a Renk HSWL 354 transmission. The rear-mounted powerpack weighs 2.59-tonnes (dry) and is designed engine first with ...
The fuel consumption per mile or per kilometre is a more appropriate comparison for aircraft that travel at very different speeds. [citation needed] There also exists power-specific fuel consumption, which equals the thrust-specific fuel consumption divided by speed. It can have units of pounds per hour per horsepower.
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Perkins Diesel Conversions & Factory fitted units, by Allan T. Condie, 2nd edition 2000, ISBN 0-907742-79-3 The 4 107T was used in UK Military electricity generating sets, the engines when in need an overhaul were rebuilt by a Kent based engineering works in Ramsgate, adjacent to the inner Harbour known as Walkers Marine (Marine Engineers) Ltd. Houchins of Ashford an MOD contractor would send ...
By increasing efficiency, a lower cruise-speed augments the range and reduces the environmental impact of aviation.According to a research project completed in 2024 and focusing on short to medium range passenger aircrafts, design for subsonic instead of transonic speed (about 15% less speed) with turboprop instead of turbofan propulsion would save 21% of fuel compared to an aircraft of ...