Jump to content

Miles Peregrine: Difference between revisions

From Wikipedia, the free encyclopedia
Browse history interactively
← Previous editNext edit →
Content deleted Content added
VisualWikitext
unlink date
Rewrite
Tag: references removed
Line 16: Line 16:
|more users =
|more users =
|produced =
|produced =
|number built = 2
|number built = 2
|unit cost =
|unit cost =
|developed from =
|developed from =
Line 23: Line 23:
|}
|}


The '''Miles M.8 Peregrine''' was a 1930s [[United Kingdom|British]] twin-engined light transport monoplane designed by [[Miles Aircraft|Miles Aircraft Limited]].
The '''Miles M.8 Peregrine''' was a 1930s [[United Kingdom|British]] twin-engined monoplane light transport designed by [[Miles Aircraft|Miles Aircraft Limited]]. A promising design, the Peregrine never entered production as the company was preoccupied by fulfilling orders for other types to the RAF. Only two of the model were built, one prototype M.8 Peregrine, and one modified M.8A Peregrine II which was used for experimentation work at [[Royal Aircraft Establishment]].


==M.8 Peregrine==
==Design and development==
In the mid-1930s [[Frederick George Miles|F. G. Miles]] identified a market for an eight-seat light transport. Designed by Miles, the '''M.8 Peregrine''' was his first multi-engined design, and the first with [[retractable undercarriage]]. It was a low [[cantilever wing]], enclosed cabin [[monoplane]] of all-wood construction. The aircraft had a crew of two and was marketed as capable of being equipped with full [[Dual control (aviation)|dual controls]]. The fuselage was built from [[spruce]] and [[plywood]], the cabin was {{cvt|12|ft|m|2}} long, {{cvt|4|ft|6|in|m|2}} wide and {{cvt|5|ft|m|2}} high, it could comfortably accommodate six passengers and had a further {{cvt|25|cuft|m3}} of baggage space. The wing had full split [[trailing edge flaps]] which extended under the fuselage.{{sfn|Jackson|1974|p=266}}{{sfn|Ord-Hume|2000|p=420}}
The '''M.8 Peregrine''' was the first twin-engined aircraft developed by Miles Aircraft. It was a low-wing monoplane with retractable tailwheel undercarriage. Powered by two 205 hp [[de Havilland Gipsy Six|de Havilland Gipsy Six II]] engines it had accommodation for two crew and six passengers. The prototype was built at Woodley and first flown there on 12 September 1936. It was entered into the [[Schlesinger Race]] between England and Johannesburg but was not ready on time and had been dismantled by late 1937. The aircraft performed well but due to the Woodley factory being pre-occupied with building the [[Miles Magister]] military trainer, the aircraft did not enter production. One further example was built with two 290 hp (216 kW) [[B6/B6S|Menasco Buccaneer B6S]] engines for the [[Royal Aircraft Establishment]].


The M.8 Peregrine was powered by two [[de Havilland Gipsy Six]] series II piston engines, each producing {{cvt|205|hp|kW|0}}. They were fitted with de Havilland two-position [[Variable-pitch propeller (aeronautics)|variable-pitch propellers]]. It was equipped with two {{cvt|40|impgal|l|0}} fuel tanks in each wing, giving it the range of {{cvt|550|mi|km nmi}}. Sources vary about the M.8 Peregrine's speed, stating the top speed was either {{cvt|180|or|188|mph|km/h|0}}, and the cruising speed was either {{cvt|160|or|164|mph|km/h|0}}. The aircraft weighed {{cvt|3000|lb|kg|0}} empty, and {{cvt|5200|lb|kg|0}} all up, its stalling speed was {{cvt|48|mph|km/h kn|0}} without flaps and {{cvt|40|mph|km/h kn|0}} with the use of the flaps.{{sfn|Jackson|1974|p=266}}{{sfn|Ord-Hume|2000|p=421}}
==Operational history==

One aircraft was delivered to the [[Royal Aircraft Establishment]], as [[Serial number|serial]] ''L6346'', for boundary layer trials and use as a flying laboratory.
The prototype M.8 Peregrine first flew on 12 September 1936 with Charles Powis at the controls. It was entered in the 1936 [[Schlesinger Race]] between England and Johannesburg, but it was not ready on time. It was registered as ''G-AEDE'', although at the beginning it carried the markings ''U-9''. The M.8 Peregrine showed great potential and attracted much interest, but Phillips & Powis (the manufacturer) has just won a contract to build [[Miles Magister]] trainers for the RAF and no capacity existed for the manufacturing of the M.8 Peregrine, so it never entered production. The prototype was dismantled at Woodley in December 1937.{{sfn|Jackson|1974|p=266}}{{sfn|Ord-Hume|2000|pp=420-421}}{{sfn|Sturtivant|1990|p=52}}

==M.8A Peregrine II==
In 1938 the [[Royal Aircraft Establishment]] ordered a version of the Peregrine for experimental work. The aircraft was given the designation '''M.8A Peregrine II''', the single example produced was registered as ''L6346''. The M.8A Peregrine II was the first metal skinned aircraft produced by Miles, it was powered by two [[B6/B6S|Menasco Buccaneer B6S]] engines, each producing {{cvt|290|hp|kW|0}}. It had a top speed of {{cvt|194|mph|km/h kn|0}} and a cruising speed of {{cvt|172|mph|km/h kn|0}}. It was slightly heavier than the M.8 Peregrine, weighing {{cvt|3350|lb|kg|0}} empty, and {{cvt|5500|lb|kg|0}} all up.{{sfn|Jackson|1974|p=266}}{{sfn|Ord-Hume|2000|p=421}}{{sfn|Sturtivant|1990|p=52}}

''L6346'' was used by the Royal Aircraft Establishment for researching [[boundary layer suction]]. To achieve this a {{cvt|10|hp|kW|0}} Ford motor driving a large vacuum pump was installed in the fuselage, the vacuum provided suction to the upper wing through specially designed, perforated wings via a series of internal ducts extending the wings length. The tests proved promising, with a marked decrease in drag and a 29% increase in rate of climb, but the outbreak of the [[Second World War]] halted the research.{{cvt|172|mph|km/h kn|0}}.{{sfn|Jackson|1974|p=266}}{{sfn|Ord-Hume|2000|p=421}}{{sfn|Sturtivant|1990|pp=52-53}}


==Operators==
==Operators==
Line 37: Line 43:
==Specifications (M.8 Prototype)==
==Specifications (M.8 Prototype)==
{{Aircraft specs
{{Aircraft specs
|ref=British Civil Aircraft 1919-1972{{sfn|Jackson|1974|p=266}} & British Light Aeroplanes{{sfn|Ord-Hume|2000|p=421}}
|prime units? = imp
|prime units?=imp
|ref= British Civil Aircraft 1919-1972:Volume III <ref name="Jackson v3 p266">Jackson 1988, p.266.</ref>
<!-- General characteristics -->
|crew=Two
|crew=2
|capacity=Six passengers
|capacity=6 passengers
|length m=9.56
|length ft=32
|length ft=32
|length in=0
|length in=0
|span m=14.02
|span ft=46
|span ft=46
|span in=0
|span in=0
|height ft=9
⚫
|empty weight kg=1,363
|height in=6
⚫
|empty weight lb=3,000
|height note=overall
|gross weight kg=2,360
|wing area sqft=300
|gross weight lb=5,200
⚫
|empty weight lb=3000
⚫
|gross weight lb=5200
|fuel capacity={{cvt|80|impgal|l|0}}
<!-- Powerplant -->
|eng1 number=2
|eng1 number=2
|eng1 name=[[de Havilland Gipsy Six]] series II piston engine
|eng1 name=[[de Havilland Gipsy Six]] series II piston engine
|eng1 type=
|eng1 kw=<!-- prop engines -->153
|eng1 hp=<!-- prop engines -->205
|eng1 hp=205
<!-- Performance -->
⚫
|max speed kmh=303
|max speed mph=188
|max speed mph=180
|max speed note=or {{cvt|188|mph|km/h kn|0}}<!-- Jackson & Ord-Hume contradict one another -->
|cruise speed kmh=264
|cruise speed mph=164
|cruise speed mph=160
|cruise speed note=or {{cvt|164|mph|km/h kn|0}}<!-- Jackson & Ord-Hume contradict one another -->
⚫
|stall speed mph=48
|stall speed note=no flaps / {{cvt|40|mph|km/h kn|0}} with flaps
|range miles=550
}}
}}

<!-- ==See also==
==See also==
{{aircontent|
{{aircontent|
|related=
|related=
|similar aircraft=
|similar aircraft=
* [[Airspeed Envoy]]
* [[Percival Q.6]]
|sequence=
|sequence=
|lists=
|lists=
|see also=
|see also=
}}-->
}}


==References==
==References==
{{commons category|Miles Peregrine}}
{{commons category|Miles Peregrine}}
===Citations===

===Notes===

{{reflist}}
{{reflist}}


===Bibliography===
===Bibliography===

{{refbegin}}
{{refbegin}}
* Amos, Peter. and Brown, Don Lambert. ''Miles Aircraft Since 1925, Volume 1''. London: Putnam Aeronautical, 2000. {{ISBN|0-85177-787-2}}.
* {{cite book |last=Brown |first=Don Lambert |date=1970 |title=Miles Aircraft Since 1925 |location=London |publisher=Putnam & Co Ltd |isbn=0-370-00127-3}}
* Brown, Don Lambert. ''Miles Aircraft Since 1925''. London: Putnam & Company Ltd., 1970. {{ISBN|0-370-00127-3}}.
* {{cite book |last=Jackson |first=A. J. |date=1974 |title=British Civil Aircraft since 1919 |volume=3 |edition=2nd |location=London |publisher=Putnam & Co Ltd |isbn=0-370-10014-X}}
* {{cite book |last=Ord-Hume |first=Arthur W. J. G |date=2000 |title=British Light Aeroplanes: Their Evolution, Development and Perfection 1920-1940 |location=Bretton, Peterborough |publisher=GMS Enterprises |isbn=1-870384-76-8}}
* ''The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985)''. Orbis Publishing.
* {{cite book |last=Sturtivant |first=Ray |date=1990 |title=British Research and Development Aircraft: Seventy Years at the Leading Edge |location=Sparkford |publisher=Haynes Publishing Group |isbn=0-85429-697-2}}
* Jackson, A.J. ''British Civil Aircraft since 1919''. London: Putnam, 1974. {{ISBN|0-370-10014-X}}.
* Jackson, A.J. ''British Civil Aircraft since 1919, Volume 3''. London: Putnam, 1988. {{ISBN|0-85177-818-6}}.
{{refend}}
{{refend}}


Revision as of 14:02, 30 June 2024

M.8 Peregrine
Miles Peregrine in flight with retractable undercarriage lowered. Flight- 21 January 1937.
Role Light transport monoplane
Manufacturer Miles Aircraft Limited
First flight 12 September 1936
Primary user Royal Aircraft Establishment
Number built 2

The Miles M.8 Peregrine was a 1930s British twin-engined monoplane light transport designed by Miles Aircraft Limited. A promising design, the Peregrine never entered production as the company was preoccupied by fulfilling orders for other types to the RAF. Only two of the model were built, one prototype M.8 Peregrine, and one modified M.8A Peregrine II which was used for experimentation work at Royal Aircraft Establishment.

M.8 Peregrine

In the mid-1930s F. G. Miles identified a market for an eight-seat light transport. Designed by Miles, the M.8 Peregrine was his first multi-engined design, and the first with retractable undercarriage. It was a low cantilever wing, enclosed cabin monoplane of all-wood construction. The aircraft had a crew of two and was marketed as capable of being equipped with full dual controls. The fuselage was built from spruce and plywood, the cabin was 12 ft (3.66 m) long, 4 ft 6 in (1.37 m) wide and 5 ft (1.52 m) high, it could comfortably accommodate six passengers and had a further 25 cu ft (0.71 m3) of baggage space. The wing had full split trailing edge flaps which extended under the fuselage.[1][2]

The M.8 Peregrine was powered by two de Havilland Gipsy Six series II piston engines, each producing 205 hp (153 kW). They were fitted with de Havilland two-position variable-pitch propellers. It was equipped with two 40 imp gal (182 L) fuel tanks in each wing, giving it the range of 550 mi (890 km; 480 nmi). Sources vary about the M.8 Peregrine's speed, stating the top speed was either 180 or 188 mph (290 or 303 km/h), and the cruising speed was either 160 or 164 mph (257 or 264 km/h). The aircraft weighed 3,000 lb (1,361 kg) empty, and 5,200 lb (2,359 kg) all up, its stalling speed was 48 mph (77 km/h; 42 kn) without flaps and 40 mph (64 km/h; 35 kn) with the use of the flaps.[1][3]

The prototype M.8 Peregrine first flew on 12 September 1936 with Charles Powis at the controls. It was entered in the 1936 Schlesinger Race between England and Johannesburg, but it was not ready on time. It was registered as G-AEDE, although at the beginning it carried the markings U-9. The M.8 Peregrine showed great potential and attracted much interest, but Phillips & Powis (the manufacturer) has just won a contract to build Miles Magister trainers for the RAF and no capacity existed for the manufacturing of the M.8 Peregrine, so it never entered production. The prototype was dismantled at Woodley in December 1937.[1][4][5]

M.8A Peregrine II

In 1938 the Royal Aircraft Establishment ordered a version of the Peregrine for experimental work. The aircraft was given the designation M.8A Peregrine II, the single example produced was registered as L6346. The M.8A Peregrine II was the first metal skinned aircraft produced by Miles, it was powered by two Menasco Buccaneer B6S engines, each producing 290 hp (216 kW). It had a top speed of 194 mph (312 km/h; 169 kn) and a cruising speed of 172 mph (277 km/h; 149 kn). It was slightly heavier than the M.8 Peregrine, weighing 3,350 lb (1,520 kg) empty, and 5,500 lb (2,495 kg) all up.[1][3][5]

L6346 was used by the Royal Aircraft Establishment for researching boundary layer suction. To achieve this a 10 hp (7 kW) Ford motor driving a large vacuum pump was installed in the fuselage, the vacuum provided suction to the upper wing through specially designed, perforated wings via a series of internal ducts extending the wings length. The tests proved promising, with a marked decrease in drag and a 29% increase in rate of climb, but the outbreak of the Second World War halted the research.172 mph (277 km/h; 149 kn).[1][3][6]

Operators

 United Kingdom

Specifications (M.8 Prototype)

Data from British Civil Aircraft 1919-1972[1] & British Light Aeroplanes[3]

General characteristics

  • Crew: 2
  • Capacity: 6 passengers
  • Length: 32 ft 0 in (9.75 m)
  • Wingspan: 46 ft 0 in (14.02 m)
  • Height: 9 ft 6 in (2.90 m) overall
  • Wing area: 300 sq ft (28 m2)
  • Empty weight: 3,000 lb (1,361 kg)
  • Gross weight: 5,200 lb (2,359 kg)
  • Fuel capacity: 80 imp gal (364 L)
  • Powerplant: 2 × de Havilland Gipsy Six series II piston engine , 205 hp (153 kW) each

Performance

  • Maximum speed: 180 mph (290 km/h, 160 kn) or 188 mph (303 km/h; 163 kn)
  • Cruise speed: 160 mph (260 km/h, 140 kn) or 164 mph (264 km/h; 143 kn)
  • Stall speed: 48 mph (77 km/h, 42 kn) no flaps / 40 mph (64 km/h; 35 kn) with flaps
  • Range: 550 mi (890 km, 480 nmi)

See also

Aircraft of comparable role, configuration, and era

References

Wikimedia Commons has media related to Miles Peregrine.

Citations

  1. ^ a b c d e f Jackson 1974, p. 266.
  2. ^ Ord-Hume 2000, p. 420.
  3. ^ a b c d Ord-Hume 2000, p. 421.
  4. ^ Ord-Hume 2000, pp. 420–421.
  5. ^ a b Sturtivant 1990, p. 52.
  6. ^ Sturtivant 1990, pp. 52–53.

Bibliography

  • Brown, Don Lambert (1970). Miles Aircraft Since 1925. London: Putnam & Co Ltd. ISBN 0-370-00127-3.
  • Jackson, A. J. (1974). British Civil Aircraft since 1919. Vol. 3 (2nd ed.). London: Putnam & Co Ltd. ISBN 0-370-10014-X.
  • Ord-Hume, Arthur W. J. G (2000). British Light Aeroplanes: Their Evolution, Development and Perfection 1920-1940. Bretton, Peterborough: GMS Enterprises. ISBN 1-870384-76-8.
  • Sturtivant, Ray (1990). British Research and Development Aircraft: Seventy Years at the Leading Edge. Sparkford: Haynes Publishing Group. ISBN 0-85429-697-2.


Retrieved from "https://en.wikipedia.org/enwiki/w/index.php?title=Miles_Peregrine&oldid=1231829841"