Abstract: A method of fuelling an aircraft for a flight to a predetermined destination in which the aircraft is loaded, the actual zero fuel weight of the loaded aircraft is determined, the fuel requirement of the loaded aircraft for that destination is calculated by fuel calculation software on the basis of operational flight plan data, said actual zero fuel weight, and further data relevant to fuel consumption for that instance of the flight to the predetermined destination, said further data being processed interactively by the user by means of a user interface to said fuel calculation software, and subsequently fuel to meet said fuel requirement is uplifted to the aircraft under the control of said user.

Abstract: A method and system for determining and implementing weight distribution of payload on an aircraft for optimizing centre of gravity of the aircraft by providing an individual weight factor for each passenger and/or crew member and their respective hand luggage and allocating at least a portion of the passengers and/or crew members seats according to the effect of passenger and/or crew member's positions on the aircraft on centre of gravity position provides advantages in determining accurately cabin payload data and cabin payload distribution for optimum fuel efficiency of an aircraft on a flight. Thus, fuel may be saved and carbon dioxide emissions may be reduced.

Abstract: A method of fuelling an aircraft for a flight to a predetermined destination in which the aircraft is loaded, the actual zero fuel weight of the loaded aircraft is determined, the fuel requirement of the loaded aircraft for that destination is calculated by fuel calculation software on the basis of operational flight plan data, said actual zero fuel weight, and further data relevant to fuel consumption for that instance of the flight to the predetermined destination, said further data being processed interactively by the user by means of a user interface to said fuel calculation software, and subsequently fuel to meet said fuel requirement is uplifted to the aircraft under the control of said user.

Abstract: A method of fuelling an aircraft for a flight to a predetermined destination in which the aircraft is loaded, the actual zero fuel weight of the loaded aircraft is determined, the fuel requirement of the loaded aircraft for that destination is calculated by fuel calculation software on the basis of operational flight plan data, said actual zero fuel weight, and further data relevant to fuel consumption for that instance of the flight to the predetermined destination, said further data being processed interactively by the user by means of a user interface to said fuel calculation software, and subsequently fuel to meet said fuel requirement is uplifted to the aircraft under the control of said user.

Abstract: A method and system for determining and implementing weight distribution of payload on an aircraft for optimizing centre of gravity of the aircraft by providing an individual weight factor for each passenger and/or crew member and their respective hand luggage and allocating at least a portion of the passengers and/or crew members seats according to the effect of passenger and/or crew member's positions on the aircraft on centre of gravity position provides advantages in determining accurately cabin payload data and cabin payload distribution for optimum fuel efficiency of an aircraft on a flight. Thus, fuel may be saved and car bon dioxide emissions may be reduced.

Abstract: A method of fuelling an aircraft for a flight to a predetermined destination in which the aircraft is loaded, the actual zero fuel weight of the loaded aircraft is determined, the fuel requirement of the loaded aircraft for that destination is calculated by fuel calculation software on the basis of operational flight plan data, said actual zero fuel weight, and further data relevant to fuel consumption for that instance of the flight to the predetermined destination, said further data being processed interactively by the user by means of a user interface to said fuel calculation software, and subsequently fuel to meet said fuel requirement is uplifted to the aircraft under the control of said user.

Abstract: A sole element (1) for a shoe, intended primarily for use when playing darts, includes a heel part which is thinner than the sole part. A raised bar (5) of generally arcuate shape is provided in that area of the sole part which underlies the base of the wearer's toes. The outer edge (3,4) of the sole element is preferably chamferred outwardly from its uppermost surface along each side of the sole element so that the floor contacting surface has a greater area than the upper surface. The chamfer angle is greater at the front of the sole element, generally forward of the raised bar (5), than at the rear.

Abstract: A dart flight comprising first and second interengageable planar pieces each providing two wings of the flight when erected, the first piece having a slot on its longitudinal axis intermediate its ends, the second piece having two slots on its longitudinal axis each opening at a respective end, the slot in the first piece being substantially the same length as the distance between the inner, closed, ends of the slots in the second piece. The flight will not readily fall apart once assembled, and it can be folded flat without significant distortion of the pieces.