Helicopter development papers

Scope and Content

Includes article on 'Pressure Navigation' by Richard Allen; Minutes, correspondence relating to Weir's proposed helicopter development; Report on other flying projects; Proposal by Power Jets Ltd to accelerate flight test programme; Report on helicopter W6 test flight; Report on accident to helicopter (diagram); Report on interview with Air Ministry on C.40 helicopter; Financial statements on flight programme; Details - helicopter development agenda; Memorandum on history of 'Cierva Autogiro Company'; Report of trials on Italian cruiser Fiume and diagram; Assorted reports on autogiro 'British Policy on the Autogiro' (paper) by Weir; Weir policy on autogiro; Memorandum - autogiro development programme