US 12,240,614 B2
Aircraft propulsion
Peter Swann, Derby (GB); Craig W Bemment, Derby (GB); Alastair G Hobday, Derby (GB); Benjamin J Keeler, Derby (GB); and Christopher P Madden, Derby (GB)
Assigned to ROLLS-ROYCE plc, London (GB)
Filed by ROLLS-ROYCE plc, London (GB)
Filed on Jun. 13, 2023, as Appl. No. 18/209,136.
Application 18/209,136 is a continuation of application No. 17/853,332, filed on Jun. 29, 2022, granted, now 11,780,597.
Claims priority of application No. 2118660 (GB), filed on Dec. 21, 2021.
Prior Publication US 2023/0322395 A1, Oct. 12, 2023
Int. Cl. B64D 37/04 (2006.01); B64D 27/10 (2006.01); B64D 41/00 (2006.01); F02C 7/22 (2006.01); F02C 9/26 (2006.01)
CPC B64D 27/10 (2013.01) [B64D 37/04 (2013.01); B64D 41/00 (2013.01); F02C 7/22 (2013.01); F02C 9/26 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power system for an aircraft comprising:
at least one gas turbine engine arranged to burn a fuel so as to provide power to the aircraft;
a plurality of fuel tanks, each arranged to contain a fuel to be used to provide power to the aircraft, wherein at least two tanks of the plurality of fuel tanks contain different fuels, the different fuels each having a different proportion of a sustainable aviation fuel; and
a fuel manager arranged to:
store information on the fuel contained in each fuel tank;
identify which tank contains the fuel with the highest proportion of a sustainable aviation fuel; and
control fuel supply so as to take fuel only from the tank containing the fuel with the highest proportion of a sustainable aviation fuel to power at least the majority of operations on the ground.