AIRCRAFT DESIGN PROPOSED BY SQN.LDR.G.L.WALLER FEASIBILITY STUDY

This document collection details the administrative and technical evaluation of an aircraft design proposed by Squadron Leader G.L. Waller of the RAAF in early 1966. The proposal, titled 'Aircraft with Annular Aerofoil,' was submitted to the Department of Air and subsequently referred to the Department of Supply's Aeronautical Research Laboratories (ARL) for a feasibility study. The correspondence tracks the formal request from the Department of Air, the internal coordination within the Department of Supply, and the eventual technical assessment conducted by ARL. Squadron Leader Waller, who had also filed patent applications for his design, engaged in discussions with the Chief Scientist and other officials to promote his concept. The design featured a circular body with a central rotating assembly, including a centrifugal fan, an annular aerofoil, and jet reaction devices intended to provide both vertical and transitional flight capabilities. ARL conducted a technical review of the provided data, which included patent specifications and schematic drawings. The technical comments, dated May 20, 1966, concluded that the data was insufficient for a precise study but noted that the design did not offer any obvious aerodynamic advantage over existing vertical lift systems. The report highlighted concerns regarding the efficiency of the fan and the potential for excessive weight. Following this assessment, the Chief Superintendent of ARL, T.F.C. Lawrence, advised the Department of Air that no further action was required regarding the proposal. The file includes internal memoranda, formal letters between departments, and the detailed provisional patent specification describing the mechanics of the proposed aircraft.