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Bristol M.1


Single-Seat Monoplane Fighter Aircraft


United Kingdom | 1917



"A persistent prejudice against monoplanes during World War 1 ensured that the Bristol M.1 series saw limited production figures."



Authored By: Staff Writer | Last Edited: 03/17/2021 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
The Bristol M.1 military fighter aircraft appeared at a time in aviation history where there still stood a bias against monoplane-winged designs. Despite its excellent showing of straightline speed, the fighter was not widely accepted by the British Air Service during World War 1 (1914-1918) and, instead, relegated to service over the Middle East, the Balkans and at the Homefront (the latter utilized as trainers). One hundred thirty of the type were delivered by Bristol Aeroplane Company before the end.

Design work on the aircraft began in 1916 as a private venture headed by chief engineer Frank Barnwell of Bristol Aeroplane. Instead of following the traditional route of a biplane wing arrangement, a monoplane wing arrangement was coupled with a "puller" engine layout - the entire design wrapped around a well-contoured, rounded fuselage which tapered elegantly to the empennage. The unit consisted of a small-area vertical fin and low-set horizontal planes. The wing mainplanes were shoulder-mounted along the fuselage sides and strengthened by a pair of semi-circular steel hoops acting as the cabane (cage) structure, this seated over the cockpit. The cockpit was of the open-air variety consistent with the period and the wheeled undercarriage (tail dragger style) was fixed. The engine, fitted to the nose, drove a two-blade wooden propeller and a large aerodynamic spinner was added to it to complete the aircraft's look. Overall construction was primary of wood with fabric skinning. Power was had from a Clerget rotary engine of 110 horsepower output.

A prototype completed a first-flight on July 14th, 1916 and proved the design sound. The British War Office saw enough value in it to purchase the aircraft for extended evaluation and formal testing produced speeds reaching nearly 130 miles per hour. One of the design's noted deficiencies was its wing mainplane placement which reduced forward and downward vision for pilots - critical viewing angles in air-to-air combat and landing actions.

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Several physical changes greeted the subsequent M.1B models of which four were ordered. These had a cut-out section along the right wing mainplane to offer better ground vision for the pilot. Additionally, the semi-circular steel hoops over the cockpit were done away with and replaced by a pyramidal cabane. At the left wing mainplane was installed a .303 Vickers machine gun. Various engine fits were trialed during this time.

Even with the changes in place, the M.1 was a hard sell to the British Air Ministry who continually favored the biplane due to past issues with fielding viable monoplane types. Monoplanes were still largely viewed as unstable, dangerous creatures with lethal landing speeds when compared to contemporary biplanes and their added drag / control. This did not stop an order for 125 production-quality models to be had in August of 1917 - these under the M.1C designation. Chief changes included the .303 Vickers machine gun now set over the nose and a Le Rhone rotary engine for power.

The M.1C exhibited a length of 20.4 feet, a wingspan of 30.8 feet and a height of 7.8 feet. Empty weight was 900lb against a MTOW of 1,350lb. Maximum sped reached 130 miles per hour - one of the faster fighters of the war - with a service ceiling 20,000 feet and a mission endurance window of 1 hour, 45 minutes.

In service, the M.1 series was sent to the Middle East Theater before the end of 1917 and some fought over the Balkans Front while the rest of the stock was retained at home for training of British airmen. In practical combat, the fighters acquitted themselves quite well and were a match for even the best the enemy had to offer but - again - prejudices against monoplanes persisted and this limited the series to the grand total of 130 aircraft.

At least a dozen were shipped to Chile before the end of 1918 as payment for two warships under construction in British shipyards prior to the war and intended for the Chilean Navy. The vessels were confiscated by the Royal Navy to shore up its fleet shortages as it headed to war with Germany.

M.1 fighters served with RAF squadron Nos. 14, 47, 72, 111 and 150. A one-off design, the M.1D, was fitted with an in-house Bristol "Lucifer" radial piston engine and used as a high-speed testbed. Following the war, in its bright red color scheme, the aircraft raced into the early 1920s but as ultimately involved in a fatal crash during 1923.

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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 Bristol M.1C Single-Seat Monoplane Fighter Aircraft.
1 x Le Rhone 9J rotary engine developing 110 horsepower and driving two-bladed propeller at the nose.
Propulsion
130 mph
210 kph | 113 kts
Max Speed
20,013 ft
6,100 m | 4 miles
Service Ceiling
230 miles
370 km | 200 nm
Operational Range
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 Bristol M.1C Single-Seat Monoplane Fighter Aircraft.
1
(MANNED)
Crew
20.5 ft
6.25 m
O/A Length
30.7 ft
(9.35 m)
O/A Width
7.7 ft
(2.35 m)
O/A Height
904 lb
(410 kg)
Empty Weight
1,345 lb
(610 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 Bristol M.1 Single-Seat Monoplane Fighter Aircraft .
1 x 0.303" Vickers machine gun over the nose synchronized to fire through the spinning propeller blades.
Variants
Notable series variants as part of the Bristol M.1 family line.
M.1 - Base Series Designation
M.1A - Protoype model with Clerget 9Z rotary engine of 110 horsepower; single example completed.
M.1B - Fitted with Clerget 9Z of 110 horsepower OR Clerget 9B of 130 horsepower OR Admiralty Rotary A.R.1 of 150 horsepower; four examples completed; portside machine gun mounting.
M.1C - Definitive production model; fitted with Le Rhone 9Ja engine of 110 horsepower; 125 examples completed.
M.1D - One-off high-speed testbed and racer from M.1C production stock; fitted with Bristol Lucifer powerplant of 140 horsepower.
Operators
Global customers who have evaluated and/or operated the Bristol M.1. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 130 Units

Contractor(s): Bristol Aeroplane Company - United Kingdom
National flag of Chile National flag of the United Kingdom

[ Chile; United Kingdom ]
Relative Max Speed
Hi: 150mph
Lo: 75mph
Aircraft Max Listed Speed (130mph).

Graph Average of 113 MPH.
Era Crossover
Pie graph section
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
Production Comparison
130
36183
44000
Entry compared against Ilyushin IL-2 (military) and Cessna 172 (civilian) total production.
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
Aviation Timeline
EarlyYrs
WWI
Interwar
WWII
ColdWar
Postwar
Modern
Future
1 / 1
Image of the Bristol M.1
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Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
AIR-TO-AIR COMBAT
TRAINING
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 Bristol M.1 Single-Seat Monoplane Fighter Aircraft appears in the following collections:
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