US 12,241,423 B2
Aircraft refuelling
Craig W Bemment, Derby (GB); Benjamin J Keeler, Derby (GB); Paul W Ferra, Derby (GB); Alastair G Hobday, Derby (GB); Kevin R McNally, Derby (GB); Andrea Minelli, Derby (GB); and Martin K. Yates, Northamptonshire (GB)
Assigned to ROLLS-ROYCE plc, London (GB)
Filed by ROLLS-ROYCE PLC, London (GB)
Filed on Mar. 23, 2023, as Appl. No. 18/125,431.
Application 18/125,431 is a continuation of application No. 17/853,233, filed on Jun. 29, 2022, granted, now 11,643,980.
Claims priority of application No. 2205345 (GB), filed on Apr. 12, 2022.
Prior Publication US 2023/0323821 A1, Oct. 12, 2023
Int. Cl. F02C 9/40 (2006.01); F02C 9/28 (2006.01)
CPC F02C 9/40 (2013.01) [F02C 9/28 (2013.01); F05D 2220/323 (2013.01); F05D 2270/30 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of refuelling an aircraft comprising a gas turbine engine and a fuel tank arranged to provide fuel to the gas turbine engine, the method comprising:
obtaining an amount of energy required for an intended flight profile of a specific flight;
obtaining calorific value data of fuel available to the aircraft for refuelling;
calculating the amount of the available fuel needed to provide the required energy;
refuelling with the calculated amount of the available fuel; and
before takeoff for the specific flight, performing a check to verify the obtained calorific value data, the check comprising measuring the calorific value of the fuel in use in the gas turbine engine and comparing the measured value to the obtained calorific value data.