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Great Britain's Phillip and Powis Miles Master and Martinet trainer

Photos

  • Miles Master trainer
  • Miles Master Mk I trainer
  • Miles Master Mk I trainer
  • Miles Master Mk II trainer
  • Miles Master Mk II trainer
  • Miles Master Mk III trainer
  • Miles Master Mk III trainer
  • Miles Master trainer
  • Miles Martinet TT Mk I trainer

Design

The Phillip and Powis Miles Kestrel first flew in 1937 but it was rejected by the British Air Ministry.1 The improved Phillip and Powis Miles Master had an order for 500 placed in 1938, which was the biggest order at the time for an Royal Air Force (RAF) trainer.1 The Master became the standard advanced trainer for the RAF during World War II.1

The Master had a low wing and was made primarily from wood.2 The landing gear of the Master was retractable.2

Prototype

The prototype for the Master I was first flown in late 1938.1,2

The prototype for the Martinet was first flown on April 24, 1942.1

Production

The Master Mk II first flew in November 1939.1 The Master Mk III first flew in 1940.1

  • Master Mk I: 9001
  • Master Mk II: 1,7471, 1,7992
  • Master Mk III: 6021,2
  • Master total: 3,2491, 3,3012
    • Manufacturer: Phillip and Powis Miles Aircraft Ltd.2
    • Production: 1939 - ?2, ? - end of 19421
  • Martinet: 1,7931
    • Production: ? - 19451
  • Queen Martinet: 69 (conversions and construction)1

Variants

  • Phillip and Powis Miles Kestrel: Prototype.1 Had Rolls-Royce Kestrel engine.1
  • Master Mk I: Production model.1 Entered service in May 1939.1
  • Master Mk II: Supplies of the Kestrel ran out and the Bristol Mercury engine was selected.1 The wheels retracted backwards into the wing.3
  • Master Mk III, Miles M-27 Master Mk III4: Slightly smaller wing span.1 Could be used to train in bombing, gunnery, navigation, instrument flying, and high speed flying.3
  • Martinet, Miles M-25 Martinet4: Target tug based on the Master Mk II.1 Longer nose.1
  • Queen Martinet: Pilotless target tug.1 Radio controlled.1 Developed in 1943.1

Usage

Britain and South Africa used the Masters and Martinet.1

Post World War II

The Master Mk II and Martinet did remain in service for a few years after World War II.1

Specifications

  Phillip and Powis Miles Master
Type Advanced trainer1
Crew 21
Wing 1: 0.303" MG1
Practice bombs 81
  Phillip and Powis Miles Master Mk I
Crew 23
Engine (Type) 1: Rolls-Royce Kestrel XXX1,2,3
Cylinders V 121
Cooling Liquid3
HP 5853, 7151,2
Propeller blades 31
Dimensions  
Span 39'1,3
11.89 m1
Length 30' 5"1, 30' 8"3
9.27 m1
Height 10'1,3
3.05 m1
Weight  
Empty 4,370 lb1
1,982 kg1
Loaded 5,500 lb3, 5,573 lb1
2,528 kg1
Performance  
Speed 250 mph3
Speed @ 15,000' /
4,572 m
226 mph1
364 kph1
Climb 2,100'/minute1
640 m/minute1
Service ceiling 27,000'1
8,230 m1
Range 484 miles1, 500 miles3
779 km1
  Phillip and Powis Miles Master Mk IA
Type Trainer2
Crew 22
Engine (Type) Rolls-Royce Kestral XXX2
Cylinders V 122
Cooling Liquid2
HP 7152
Dimensions  
Span 39'2
Length 30' 5"2
Height 10'2
Weight  
Loaded 5,532 lb2
Performance  
Speed @ 15,000' /
4,572 m
226 mph2
Service ceiling 28,000'2
Range 500 miles2
Armament  
Wing 1: MG2
  Phillip and Powis Miles Master Mk II, Miles M-19 Master Mk II
Type Advanced trainer3,4, Glider Tug4
Crew 24
Engine (Type) Bristol Mercury2
Bristol Mercury XX1,3,4
OR Bristol Mercury XXX1
Cylinders Radial 91,4
Cooling Air3,4
HP 8202, 8503, 8701
Propeller blades 31
Dimensions  
Span 35' 9"4, 39'3
10.9 m4
Length 29' 6"3,4
9 m4
Height 9' 5"3,4
2.86 m4
Wing area 224 sq ft4
20.8 sq m4
Weight  
Empty 4,130 lb4, 4,293 lb1
1,875 kg4, 1,947 kg1
Loaded 5,300 lb3, 5,312 lb4, 5,573 lb1
2,412 kg4, 2,528 kg1
Performance  
Speed 260 mph3
Speed at Sea Level 240 mph4
384 kph4
Speed @ 5,000' /
1,525 m
260 mph4
416 kph4
Speed @ 6,000' /
1,829 m
242 mph1
389 kph1
Speed @ 10,000' /
3,050 m
255 mph4
408 kph4
Speed @ 15,000' /
4,575 m
245 mph4
392 kph4
Cruising Speed at 5,250'
1,600 m
230 mph4
368 kph4
Climb 2,120'/minute1
646 m/minute1
Service ceiling 25,100'1, 28,000'4
7,650 m1, 8,540 m4
Range 393 miles1
632 km1
  Phillip and Powis Miles Master Mk III, Miles M-27 Master Mk III
Type Advanced trainer3,4
Crew 24
Engine (Type) Pratt & Whitney Wasp Junior1,2
Pratt & Whitney Twin Wasp Junior3
1: Pratt & Whitney R-1535-SB4G Twin Wasp Junior4
Cylinders Radial1, Radial 144
Cooling Air4
HP 4503, 7504, 8251,2
Propeller blades 31
Dimensions  
Span 35' 7"1, 35' 9"4, 39'3
10.85 m1, 10.9 m4
Length 30' 2"1,3,4
9.19 m1, 10.5 m4
Height 9' 3"1,3,4
2.82 m1,4
Wing area 224 sq ft4
20.8 sq m4
Weight  
Empty 4,204 lb1, 4,210 lb4
1,907 kg1, 1,911 kg4
Loaded 5,400 lb3,4, 5,573 lb1
2,452 kg4, 2,528 kg1
Performance  
Speed at 2,000' /
610 m
214 mph4
342.4 kph4
Speed at 5,000' /
1,525 m
221 mph4
353.6 kph4
Speed at 9,000' /
2,745 m
231 mph4
369.6 kph4
Speed at 15,000' /
4,575 m
227 mph4
363 kph4
Speed at 20,000' /
6,100 m
218 mph4
348.8 kph4
Service ceiling 27,300'4
8,350 m4
  Phillip and Powis Miles Martinet, Miles M-25 Martinet
Type Target tug1,4
Crew 21
Engine (Type) Bristol Mercury XX1,4
OR Bristol Mercury XXX1,4
Cylinders Radial 91,4
Cooling Air4
HP 8701,4
Propeller blades 31
Dimensions  
Span 39'4
11.9 m4
Length 30' 11"4
9.45 m4
Height 11' 7"4
3.57 m4
Wing area 238 sq ft4
22.1 sq m4
Weight  
Empty 4,600 lb4, 4,640 lb1
2,090 kg4, 2,105 kg1
Loaded 6,600 lb4, 6,750 lb1
3,000 kg4, 3,062 kg1
Performance  
Speed at Sea Level 232 mph4
371 kph4
Speed at 15,000' /
4,575 m
237 mph4
379 kph4
Cruising Speed at 4,500' /
1,370 m
225 mph4
360 kph4

Sources:

  1. Aircraft of WWII, Stewart Wilson, 1998
  2. World War II Airplanes Volume 1, Enzo Angelucci, Paolo Matricardi, 1976
  3. Aeronautics Aircraft Spotters' Handbook, Ensign L. C. Guthman, 1943
  4. Jane's Fighting Aircraft of World War II, 1989
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