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  2. Fuel gauge - Wikipedia

    en.wikipedia.org/wiki/Fuel_gauge

    Many large transport aircraft use a different fuel gauge design principle. An aircraft may use a number (around 30 on an A320) of low voltage tubular capacitor probes where the fuel becomes the dielectric. At different fuel levels, different values of capacitance are measured and therefore the level of fuel can be determined.

  3. Aircraft fuel system - Wikipedia

    en.wikipedia.org/wiki/Aircraft_fuel_system

    An aircraft fuel system allows the crew to pump, manage, and deliver aviation fuel to the propulsion system and auxiliary power unit (APU) of an aircraft. Fuel systems differ greatly due to different performance of the aircraft in which they are installed. A single-engine piston aircraft has a simple fuel system; a tanker (such as the KC-135 ...

  4. Fuel fraction - Wikipedia

    en.wikipedia.org/wiki/Fuel_fraction

    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]

  5. Floatstick - Wikipedia

    en.wikipedia.org/wiki/Floatstick

    A floatstick is a device to measure fuel levels in modern large aircraft. It consists of a closed tube rising from the bottom of the fuel tank. Surrounding the tube is a ring-shaped float, and inside it is a graduated rod indicating fuel capacity. The float and the top of the rod contain magnets.

  6. Aircraft engine controls - Wikipedia

    en.wikipedia.org/wiki/Aircraft_engine_controls

    Fuel quantity gauge - Indicates the amount of fuel remaining in the identified tank. One per fuel tank. One per fuel tank. Some aircraft use a single gauge for all tanks, with a selector switch that can be turned to select the tank one wishes to have displayed on the shared gauge, including a setting to show the total fuel in all tanks.

  7. Flight planning - Wikipedia

    en.wikipedia.org/wiki/Flight_planning

    Flight plans mix metric and non-metric units of measurement. The particular units used may vary by aircraft, airline, and location across a flight. Since 1979, [4] the International Civil Aviation Organization (ICAO) has recommended a unification of units of measurement within aviation based on the International System of Units (SI). [5]

  8. Usable fuel - Wikipedia

    en.wikipedia.org/wiki/Usable_fuel

    In aviation, usable fuel is the fuel on board an aircraft that can actually be used by its engines. The opposite of usable fuel is unusable fuel. [1]The unusable fuel figure is calculated for an aircraft fuel tank in "the most adverse fuel feed condition occurring under each intended operation and flight maneuver involving that tank".

  9. Payload fraction - Wikipedia

    en.wikipedia.org/wiki/Payload_fraction

    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.