Minutes of D.Eng.RD meeting held at Armstrong Siddeley Motors

Present: Mr Weir (1 of 7 MoS); Mr Saxton (1 of 12 Armstrong Siddeley Motors). Sapphire test position and future programme: Sapphire 7. Sapphire 6 150-hour modification approval test ok. Reheat development. Future programme 150-hour modification approval test. English Electric P.1 aircraft intakes using both engines. Further reheat testing. Sapphire 5 25-hour test completed. Titanium development. Javelin and Hunter production engines. Flying test beds: AST Lanastrian VM.733 (two Sa.6 outboard); Gloster Meteor WA.820 Two Sa.2): Canberra WD.933 (Two Sa.3); Canberra (2nd aircraft) Two Sa.6R. Prototype aircraft: Javelin WD808 (two Sa.6) 2nd aircraft; Javelin WD.827 (two Sa.6) 3rd aircraft; Handley Page HP.80 WB.771 (4 Sa.6) 1st aircraft; Handley page HP.80 2nd aircraft; Avro Vulcan VX.770 (4 Sa.6); Hawker Hunter (Sa.6); English Elctric P.1(two Sa.5) Hawker Hunter (Sa.7). Viper contract postion: Two Viper long life required by Armstrong Siddeley Motors for Provost aircraft. Viper in tail of Lancastrian SW.342. Double Mamba: 150-hour development test using synthetic coil and 150-hour development test at 90deg Coil inlet temperature. Aircraft: Fairey Gannet VR.546; Fairey Gannet (2nd aircraft) VR.557; Fairey Gannet (3rd aircraft) WE.488; Blackburn GR17/45 WB.797. Mamba test position:SB.6 prototype flight engines. Lancaster SW.342; Dakota KJ.839; Balliol VL.935; Short SB.6 (M.123.D) 1st aircraft; 2nd aircraft Armstrong Siddeley Motors Mamba Mk.6; 3rd aircraft with Armstrong Siddeley Motors Mamba Mk.6 engines. Python: Cracking of G.18B Discs. Cracking of twin disc turbine (HGT.3). Wyvern VW.868; Wyvern Mk.IV to replaceWyvern Mk.2 VW.868. Rocket: Screamer. Research aerodynamics: Three-dimensional flow in compressors. Investigation into the effect of hub/tip diameter ratio in compressors. Compressor blading pitch chord ratio. Turbins. Engine intakes. Supersonic nozzles. Combustion: Vapourisers. Flame vibration. Ignition.blade vibration. Bearings. Scuffing rig