- British military aircraft designation systems
Since the end of the
First World War, aircraft types in British military service have generally been known by a "type name" assigned by their manufacturer, or (for various imported types) bestowed upon them by the first military service to bring them into service. Individual variants are recognised by mark numbers. This is in contrast to the systems such as that used in the United States, where an aircraft type is primarily identified by an alphanumeric designation.
From about 1910, the largest single designer of aircraft for the
British Army's Royal Flying Corpswas the Royal Aircraft Factory, Farnborough (although most were built elsewhere). The Royal Aircraft Factory designated its types according to several categories, which were given the following prefixes:
* B.E.: Blériot Experimental (
tractor configurations) (e.g B.E.2)
* F.E.: Farman Experimental (
pusher configurations) (eg. F.E.2)
* R.E.: Reconnaissance Experimental (eg.
* S.E.: Scouting Experimental (eg. S.E.5)
* C.E.: Coastal Experimental (eg.
Royal Aircraft Factory C.E.1- prototype only)
* N.E.: Night Experimental (eg.
Royal Aircraft Factory N.E.1- prototype only)R.T. & T.E. were also used for strictly one off prototypes.
Admiraltychose to have private industry design and build its aircraft and frequently referred to designs by the serial of the first aircraft of that type to be accepted for service, although not always. The Army also bought industry-designed aircraft, especially when the Royal Aircraft Factorywas unable to keep abreast of demand but no designation system was introduced during the war that covered more than the products of a single manufacturer.
From 1920 to 1949, most aircraft had an associated Air Ministry Specification number.
Prototypeaircraft would be produced under contract and would be referred to as by Manufacturer Name and Specification Number. If accepted they would get a service name. For example, the "Fairey 6/22"; this being the 6th specification issued in the year 1922 that was accepted as the " Fairey Flycatcher". Later, a preceding letter was added to the Specification Number to identify the type of aircraft; e.g. the "Bristol B.28/35", a bomber aircraft, the 28th specification of the year 1935, which would become the Bristol Blenheim.
The names of aircraft would be suggested by the
Air Ministryor Admiraltyand agreed with the manufacturer when placing an order. Names generally followed one or a number of patterns;
Alliterationwas popular; e.g. aircraft from Vickers-Armstrongswere given names starting with V [Vickers aircraft starting with W were all of geodesicconstruction.] , Hawker Aircraft, names starting with H, etc.
Heavy bombers received the names of cities and towns - Short Stirling, Avro Lancaster, Handley Page Halifax
Flying boats were given the names of coastal towns - Saro Lerwick, Supermarine Stranraer, Short Sunderland
* Land-based maritime patrol aircraft were given names with nautical exploration associations -
Avro Anson( George Anson, 1st Baron Anson), Lockheed Hudson( Henry Hudson), Avro Shackleton( Ernest Shackleton)
* Aircraft for army co-operation and liaison were given names associated with mythological warriors, heroes and generals; e.g.
Westland Lysander, Airspeed Horsa, General Aircraft Hamilcar, Slingsby Hengist
* American aircraft, whether purchased directly or sourced under
Lend-Lease, were given American-themed names following established patterns, e.g. the Martin Baltimore, Consolidated Catalina. The American services were not generally in the habit of giving aircraft names, and many British-chosen names would later be adopted; e.g. the P-51 Mustangbegan life as the North American Mustang Mk.I with the RAF.
* Naval versions of aircraft not originally ordered for the
Fleet Air Armwere given the prefix "Sea" - Sea Hurricane, Seafire (in the case of the Supermarine Spitfire), Sea Venom. Sometimes a named RAF version of an aircraft would be cancelled with the naval version entering service without a corresponding land-based name, e.g., Hawker Sea Fury, de Havilland Sea Vixen.
*Naval aircraft ordered as such would have names with a nautical theme - e.g.
Supermarine Walrus, Blackburn Skua, Fairey Gannet. Torpedo bombers would be given 'fish' names, e.g., Blackburn Shark, Fairey Swordfish, Fairey Barracuda.
* With the introduction of jet-engined,
swept wingbombers armed with nuclear weapons, these radical new aircraft were given names beginning with "V"; the V Bombers- Vickers Valiant, Avro Vulcanand Handley Page Victor.
* Where civilian aircraft types have been taken into service, their existing names or alphanumeric designations have often been retained, e.g. the
Vickers VC-10or Lockheed Tristar.
Starting in the
interwar period, variants of each operational type were usually indicated by a mark number, a Roman numeraladded to the type name, usually preceded by "Mark" or "Mk." (eg. Hawker Fury Mk. I). Mark numbers were allocated sequentially to each new variant, the new Mark number signifying a 'major' change such as a new engine-type. Sometimes an alphabetic suffix was added to the mark number to indicate a minor change (e.g. Bristol Bulldog Mk. IIA). Occasionally, this letter indicated a change in role, e.g. the Bristol Blenheim Mk.I bomber was adapted to the Blenheim Mk.IF long-range fighter.
Second World War, as aircraft ordered for one purpose became adapted to a multitude of roles, mark numbers became prefixed with letters to indicate the role of that variant. Aircraft of the same mark that were adapted for different purpose would then be differentiated by the prefix. For instance the Boulton Paul Defiant Mk.I was adapted to a night fighter, the Defiant NF Mk.II, some of which were later converted to target tugs as the Defiant TT Mk. II. Where there was a "Sea-" variant, this would have its own series of mark numbers (e.g. the Seafire Mk.I was derived form the Spitfire Mk.V).
Occasionally other 'minor' but nonetheless important changes might be denoted by Series numbers, preceded by "Series" or "Srs." ( e.g. de Havilland Mosquito B Mk.IV Srs. I / B Mk.IV Srs.II). The series number denoted a revision during the production run of a particular Mark. This again could then have an additional letter-suffix (e.g. the Handley Page Halifax Mk. II Srs IA).
Arabic numerals replaced Roman numerals. This system has continued largely unchanged to this day with the addition of more prefixes as new roles have arisen. With this change, the "Sea-" variants were allocated their own range within one common series for all variants (e.g. the Hawker Fury Mk.I was followed by the Sea Fury F.10, Sea Fury FB.11 etc. The use of the "Mark" or "Mk." has gradually been dropped from use.
For example, the first
Lockheed Herculesvariant in RAF service was the Hercules C.1 ("Cargo, Mark 1"). A single example was adapted for weather monitoring purposes and became the Hercules W.2. The stretched variant became the Hercules C.3. With aircraft with a long service life, as their function changes over time, the designation letters and designation letters and sometimes the mark digit will change to reflect this.
The prefixed mark number can be presented in three different styles - for example:
* Hercules C Mark 3 - very rarely used
* Hercules C Mk 3 - official style
* Hercules C3 - common abbreviated style
full stophas generally been used to break the number from the prefix, eg. C. Mk. 3 or C.3, a practice that has officially discontinued recently for current in-service typesFact|date=April 2008.
Export variants of British military aircraft are usually allocated mark numbers (sometimes without a role prefix) from a higher range of numbers, usually starting at Mark 50. A converse convention was adopted for the Canadian-designed
de Havilland Canada DHC-1 Chipmunk, where the sole British service variant was designated Chipmunk T.10.
Role prefixes used at various times comprise:
List of Air Ministry Specifications
United Kingdom military aircraft serials
* [http://www.aerospaceweb.org/question/history/q0205.shtml UK & Canada Aircraft Designation Systems at aerospaceweb.org]
* [http://vicflintham.co.uk/lists/Britdes.html Vic Flintham: British military aircraft designations 1945 to date]
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