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                                                The Magister trainer had been 
                                                built in many hundreds by 1938, 
                                                but Mr Miles felt that he could 
                                                produce an even better machine 
                                                within similar specification 
                                                limits, and proved his theories 
                                                with the Trainer M.18, which 
                                                flew for the first time in 1939. 
                                                Beyond the fact that it was a 
                                                tandem two-seat low-wing 
                                                monoplane, the M.18 had nothing 
                                                in common with the Magister. 
                                                 
                                                The main design considerations 
                                                were ease of handling and 
                                                serviceability, and these aims 
                                                were attained in a high degree, 
                                                the machine being most 
                                                delightful to fly, with controls 
                                                light and positive right down to 
                                                the stall. 
                                                 
                                                In the course of extended trials 
                                                several variants of the M.18 
                                                were tested, with open and 
                                                enclosed cockpits, tail-wheel 
                                                and tricycle undercarriages, and 
                                                with the Gipsy Major and Cirrus 
                                                Major engines, the combined 
                                                results proving that the machine 
                                                was an ideal training type. 
                                                 
                                                After successful official 
                                                acceptance trials the M.18 was 
                                                ordered for quantity production, 
                                                but the order was almost 
                                                immediately reversed because the 
                                                existing biplane design was in 
                                                large-scale manufacture. Then, 
                                                in 1942, the machine was again 
                                                ordered for production, but 
                                                official policy was again 
                                                changed and the M.18 was 
                                                cancelled once more. 
                                                 
                                                 
                                                  | 
                                                   
                                                  
                                                  Design Company:  | 
                                                  
                                                   
                                                  
                                                  Phillips & Powis Aircraft Ltd  | 
                                                  
            
                                                 
                                                  | 
                                                   
                                                  
                                                  First Flight:  | 
                                                  
                                                   
                                                  4 
                                                  December 1938  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  M.18:  | 
                                                  
                                                   
                                                  3 
                                                  - Phillips & Powis, Woodley  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  M.18.HL:  | 
                                                  
                                                   
                                                  1 
                                                  - Phillips & Powis, Woodley  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Type Specification  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Applies to:  | 
                                                  
                                                   
                                                  
                                                  Miles M.18  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Type:  | 
                                                  
                                                   
                                                  
                                                  Two seat basic trainer to 
                                                  replace Magister   | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Wing:  | 
                                                  
                                                   
                                                  
                                                  Low wing cantilever monoplane 
                                                  of spruce structure covered in 
                                                  plywood. Centre section has no 
                                                  dihedral and is of constant 
                                                  section, outer sections have 
                                                  dihedral and taper towards the 
                                                  tip. Split flaps fitted as 
                                                  standard   | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Fuselage:  | 
                                                  
                                                   
                                                  
                                                  Fuselage of spruce structure 
                                                  with plywood covering 
                                                    | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Tail Unit:  | 
                                                  
                                                   
                                                  
                                                  Cantilever tailplane with 
                                                  elevator at top of fuselage 
                                                  with single fin and rudder
                                                    | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Landing Gear:  | 
                                                  
                                                   
                                                  
                                                  Fixed main wheels in fairings 
                                                  beneath wing. Tail wheel
                                                    | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Power Plant:  | 
                                                  
                                                   
                                                  
                                                  One 150 hp Blackburn Cirrus 
                                                  Major air cooled inline engine 
                                                  in nose  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Accommodation:  | 
                                                  
                                                   
                                                  
                                                  Tandem open cockpits for crew 
                                                  above wing  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Dimensions  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Span:  | 
                                                  
                                                   
                                                  
                                                  31 ft  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Length:  | 
                                                  
                                                   
                                                  
                                                  24 ft 10 in  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Height:  | 
                                                  
                                                   
                                                  9 
                                                  ft 4 in  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Wing Area:  | 
                                                  
                                                   
                                                  
                                                  183 sq ft  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Weights  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Empty:  | 
                                                  
                                                   
                                                  
                                                  1,300 lb  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  All-up:  | 
                                                  
                                                   
                                                  
                                                  1,903 lb  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Performance  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Max Speed:  | 
                                                  
                                                   
                                                  
                                                  135 mph  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Rate of Climb:  | 
                                                  
                                                   
                                                  
                                                  780 ft/min  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Service Ceiling:  | 
                                                  
                                                   
                                                  
                                                  12,400 ft  | 
                                                  
                                                 
                                                  | 
                                                   
                                                  
                                                  Range:  | 
                                                  
                                                   
                                                  
                                                  376 miles  | 
                                                  
                                                 
            
            
                                                  |