No men in this picture, which is actually pretty abstract.  There were, however, many Magnificent aerodynamicists and engineers from both Westland Helicopters and the Royal Aircraft Establishment (RAE), involved with the design and development of the series of BERP (British Experimental Rotor Programme) rotor blades eventually to be productionised for Lynx (BERP III) and Merlin (BERP IV) helicopters.  This blade tip was seen on a Merlin Mk3 displayed at the Merryfield Open Evening in 2010.

The previous post in my ‘Those Magnificent Men’ series can be found here.