Minutes of D.Eng.RD meeting held at Armstrong Siddeley Motors on 14 March 1950

Present: Capt Luby MoS; Mr Saxton Armstrong Siddeley Motors; Sir Marshal Sir A Coryton CS (A); Mr Schoel D/Derd; to name but a few of the 23 attending. Sapphire position including 1st Hastings flight testing. Flying test beds: AST Lancastrian now at Bitteswell. HP Hastings. AST Meteor. Canberra FTB. Prototype aircraft: Gloster F4/48. HP 35/46. Vickers B9/48. Hawker F3/48. AWA E.16/49. Ground test rig: Vickers. Sapphire future development. Python: Lancaster. Wyvern VP.109. Wyvern trainer. Mamba: Apollo type, Marathon type, 1270hp engine, Dakota, Sturgeon, Balliol, Athena, Adder general development. Australian engines. Viper general development. Rocket: estimated date for soecial category test which gives flight clearance 3 February now put back to 16 March owing to scrap pump casing. Nitric acid as alternative to liquid oxygen Armstrong Siddeley Motors to look into possibility of changing over on 4,000lb type. Cheetah: Plessy cartridge starter drive on test at Rotols for clearance. Accommodation at Bitteswell: Armstrong Siddeley Motors to share with NGTE. Appendix 1: Listing engines from 95 to 120 Sapphire. Appendix 2: Python, from from engine 101 to 122 Appendix 3: Mamba, from engine 101 to 174 Appendix 4: Double Mamba from engine 201 to 210. Appendix 4: Adder from engine 1 to 6