Armstrong Siddeley Motors: Minutes of a meeting to review the Python position

Development position: 77 hours running have been carried out during the period, making a total of 10,477 hours P.103: The engine has been engaged on investigations into instability and tests carried out on behalf on the RAE. At the moment photographic results are being examined by the RAE, but no results are available. In the meantime the engine is being fitted with the jet pipe temperature control for acceleration tests P.146: This engine is engaged in turbo-starting Acceleration control Jet pipe temperature control Low oil pressure satellite roller bearing end clearance Acceleration conscious CSU Anti-icing On and Off ECU Twin disc turbine cooling Cracking mixing chambers Anti-carbon plates Failure of P.113 in Wyvern VP.109: The official view of the failure of this engine at Farnborough is that the loss in power was due to icing of the stoneguard. We have recommended that these stoneguards are removed P.116 flight test