Inventor
HOBDAY ALASTAIR G
GB34 patents
Patents
34 patentsUS11643979B1May 9, 2023
Aircraft fuel system for gas turbine engine
ROLLS ROYCE PLC18 citations94
US11585282B1Feb 21, 2023
Fuel characteristics
ROLLS ROYCE PLC27 citations94
US11708796B2Jul 25, 2023
Performance parameters
ROLLS ROYCE PLC7 citations86
US11708769B2Jul 25, 2023
Exhaust content
ROLLS ROYCE PLC7 citations86
US11585278B1Feb 21, 2023
Aviation fuel
ROLLS ROYCE PLC9 citations86
US11643980B1May 9, 2023
Engine parameters
ROLLS ROYCE PLC6 citations85
US11780597B2Oct 10, 2023
Aircraft propulsion
ROLLS ROYCE PLC4 citations75
US12241415B1Mar 4, 2025
Gas turbine engine heat exchange
ROLLS ROYCE PLC4 citations74
US11815031B2Nov 14, 2023
Fuelling schedule
ROLLS ROYCE PLC2 citations73
US12163479B2Dec 10, 2024
Fuel delivery
ROLLS ROYCE PLC1 citations72
US12540582B2Feb 3, 2026
Fuel delivery
ROLLS ROYCE PLC0 citations62
US12503983B2Dec 23, 2025
Propulsion system control
ROLLS ROYCE PLC0 citations62
US12467410B2Nov 11, 2025
Gas turbine performance
ROLLS ROYCE PLC0 citations62
US12410756B2Sep 9, 2025
Heat transfer
ROLLS ROYCE PLC0 citations62
US12331692B2Jun 17, 2025
Flight profile
ROLLS ROYCE PLC0 citations62
US12331685B2Jun 17, 2025
Fuel viscosity
ROLLS ROYCE PLC0 citations62
US12297781B2May 13, 2025
Operating an aircraft
ROLLS ROYCE PLC0 citations62
US12240614B2Mar 4, 2025
Aircraft propulsion
ROLLS ROYCE PLC0 citations62
US12241423B2Mar 4, 2025
Aircraft refuelling
ROLLS ROYCE PLC0 citations62
US12152496B2Nov 26, 2024
Exhaust content
ROLLS ROYCE PLC0 citations62
US12152542B2Nov 26, 2024
Transmittance parameters
ROLLS ROYCE PLC0 citations62
US12152497B2Nov 26, 2024
Contrail parameters
ROLLS ROYCE PLC0 citations62
US12098677B2Sep 24, 2024
Heat transfer
ROLLS ROYCE PLC0 citations62
US12085029B2Sep 10, 2024
Propulsion system control
ROLLS ROYCE PLC0 citations62
US12078112B2Sep 3, 2024
Determination of fuel characteristics
ROLLS ROYCE PLC0 citations62
US12060838B2Aug 13, 2024
Determination of fuel characteristics
ROLLS ROYCE PLC0 citations62
US12044177B2Jul 23, 2024
Gas turbine engine and method of operating gas turbine engine
ROLLS ROYCE PLC0 citations62
US11988144B2May 21, 2024
Fuel viscosity
ROLLS ROYCE PLC0 citations62
US12158115B2Dec 3, 2024
Gas turbine engine heat exchange
ROLLS ROYCE PLC0 citations52
US12497924B2Dec 16, 2025
Fueldraulic actuation
ROLLS ROYCE PLC0 citations51
US12421915B2Sep 23, 2025
Fuel supply system
ROLLS ROYCE PLC0 citations51
US12416266B2Sep 16, 2025
Gas turbine engine
ROLLS ROYCE PLC0 citations51
US12359619B2Jul 15, 2025
Fueldraulic heat management system
ROLLS ROYCE PLC0 citations51
US12158438B2Dec 3, 2024
Method of determining the calorific value of fuel provided to a gas turbine engine
ROLLS ROYCE PLC0 citations51