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Miles M.22A


Turret Fighter / Night-Fighter Aircraft Proposal


United Kingdom | 1940



"The Miles M.22A was arranged against Specification F.18-40, intended to serve the British Royal Air Force with an impressive twin-engine fighter."



Authored By: Staff Writer | Last Edited: 11/15/2020 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
In an effort to sell the British Air Ministry on the concept of a new lightweight, twin-engine all-modern fighter before the start of hostilities concerning World War 2 (1939-1945), the Miles Aircraft concern drew up plans for the proposed "M.22" (detailed elsewhere on this site). This aircraft was uniquely arranged with the cockpit embedded in the middle and at the center mass of the wing mainplane, producing as small a frontal area footprint as possible and, therefore, reducing drag for exceptional high-speed performance. The aircraft was to be powered by a pair of Rolls-Royce "Griffon" inline piston engines, have a "tail-dragger" undercarriage, and feature a 10-machine gun "gun nest" in the mainplane's leading edge.

Before this idea was completely abandoned, the M.22 was evolved to become the "M.22A" which went down a more conventional design route and was arranged against Specification F.18/40 (calling for a "turret fighter" / nightfighter) of 1940. For its own time on the drawing boards, the M.22A was consistently modified throughout its proposal phase, resulting in several primary forms taking shape (though none were eventually pursued).

With an appearance akin to the classic de Havilland DH.98 "Mosquito" heavy fighter (and similar dimensions to boot), the M.22A was given an elliptically-shaped wing mainplane that was low-mounted (and forward of midships) against the fuselage and its inline engine pair was underslung in a typical period fashion. Unlike the original M.22, the M.22A had a more traditional rounded fuselage form with the cockpit seated directly aft of the nose cone. The tail unit was to incorporate a twin-rudder arrangement (one offshoot drawing depicted a triple-rudder tailplane configuration) and primary armament was to become a cannon arrangement embedded in the nose. Construction (a semi-monocoque approach for the fuselage) was to rely heavily on wood to save on wartime resources such as metal. The operating crew was to be two personnel (as in the Mosquito heavy fighter).

The M.22A was to be powered by a pair of liquid-cooled inline piston engines, these becoming either the Rolls-Royce "Merlin XX" or "Merlin 60" series powerplants. The engines, housed in all-new, well-streamlined nacelles, would be used to drive three-bladed propeller units in "puller" fashion and provide the platform with an estimated maximum speed of 405-425 miles-per-hour with a service ceiling beyond 40,000 feet (requiring cockpit pressurization).

As drawn up, the aircraft measured a running length of 35 feet and a wingspan of 51 feet. "All-up-weight" was to reach 16,500lb.

In comparison, the classic Mosquito (B.Mk.XVI model) reached speeds of 415mph and measured 44.5 feet long with a wingspan of 54.1 feet.

Armament-wise, the new fighter was to carry an all-cannon (of 20mm caliber each) battery in forward-firing mountings in or around the nose assembly. One version of the fighter sported the cannons in pairs along the sides of the nose while another version detailed all four cannons under the nose in a side-by-side arrangement. In either case, the aircraft was to have considerable frontal-hitting firepower against enemy fighters and bombers of the day and afforded the platform exceptional attack abilities against ground targets. In addition to this, thought was given to adding a traversing mechanism to the gun battery to increase the aircraft's firing arc from centerline - adding a unique tactical aspect to the design. Still another form added an entire Boulton Paul turret assembly to the mix, this complete system fielding four total guns.

In any event, the M.22A fell to the same fate as the earlier M.22. It was not pursued as the British wartime commitment grew larger and larger with each passing month into 1940. The Royal Air Force would make do with its current crop of fighters for the foreseeable future.

The F.18/40 requirement was eventually fulfilled by the de Havilland Mosquito NF.II series heavy fighter.

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Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Miles M.22A Turret Fighter / Night-Fighter Aircraft Proposal.
2 x Rolls-Royce Griffon Merlin XX or Merlin 60 liquid-cooled inline piston engines of unknown power output driving three-bladed propeller units in puller fashion.
Propulsion
426 mph
685 kph | 370 kts
Max Speed
42,995 ft
13,105 m | 8 miles
Service Ceiling
1,243 miles
2,000 km | 1,080 nm
Operational Range
2,850 ft/min
869 m/min
Rate-of-Climb
City-to-City Ranges
Operational range when compared to distances between major cities (in KM).
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Miles M.22A Turret Fighter / Night-Fighter Aircraft Proposal.
2
(MANNED)
Crew
34.9 ft
10.65 m
O/A Length
51.0 ft
(15.55 m)
O/A Width
17.4 ft
(5.30 m)
O/A Height
13,889 lb
(6,300 kg)
Empty Weight
16,535 lb
(7,500 kg)
MTOW
Design Balance
The three qualities reflected below are altitude, speed, and range. The more full the box, the more balanced the design.
RANGE
ALT
SPEED
Armament
Available supported armament and special-mission equipment featured in the design of the Miles M.22A Turret Fighter / Night-Fighter Aircraft Proposal .
PROPOSED:
4 x 20mm Automatic cannons in internal, forward-firing mounting installed in or around the nose assembly.
Variants
Notable series variants as part of the Miles M.22A family line.
M.22A - Base Project Designation.
Operators
Global customers who have evaluated and/or operated the Miles M.22A. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 0 Units

Contractor(s): Miles Aircraft - UK
National flag of the United Kingdom

[ United Kingdom (cancelled) ]
Relative Max Speed
Hi: 500mph
Lo: 250mph
Aircraft Max Listed Speed (426mph).

Graph Average of 375 MPH.
Era Crossover
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030
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Image of the Miles M.22A
Image copyright www.MilitaryFactory.com; No Reproduction Permitted.

Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
AIR-TO-AIR COMBAT
INTERCEPTION
GROUND ATTACK
CLOSE-AIR SUPPORT
RECONNAISSANCE
X-PLANE
Recognition
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Going Further...
The Miles M.22A Turret Fighter / Night-Fighter Aircraft Proposal appears in the following collections:
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