For those not in the know, this was the joint US/Aus Helicopter Return Project-Experimental Study. (HeRPES)
Because of the increasing loss of the R22/44 series of helicopters, it was thought that the re-design of the basic rotor blade would enable aircraft in a navigational embarrassment situation, to be able to 'rotor profile shift'. A kind of shape shifting using pneumatic cells along the trailing edges.
This would allow the aircraft to return to it's point of origin with the minimum amount of navigational workload for its pilot. However the project was eventually cancelled as it was realised that the most common time for navigational embarrassment was after the point of no return, resulting in the aircraft being lost anyway due to lack of fuel!