| 主权项 |
1. A reception coupling for air-to-air refuelling comprising:
a main body comprising a fuel passage for allowing fuel to flow through the reception coupling and a valve member which is movable, under action of a receiver aircraft probe, in an upstream direction from a first position in which the fuel passage is closed to a second position in which the fuel passage is open for allowing air-to-air refuelling, and a chamber defined by a chamber wall, which chamber is separate from the fuel passage and within which a portion of the valve member can be accommodated as the valve member moves towards the second position, so shielding said portion of the valve member from effects of pressure in the fuel passage which would tend to resist movement of the valve member towards the second position. |
