Comper Swift

{{Short description|British single-seat sporting aircraft (1930–1933)}} {{Promotional|date=December 2025}} {{Use dmy dates|date=January 2018}} {{Use British English|date=January 2018}} {{Infobox aircraft |name = Swift |image = File:Comper CLA.7 Swift G-ACTF (6740834019).jpg |caption = |type = Single-seat sporting aircraft |manufacturer = Comper Aircraft Company Ltd |designer = Nicholas Comper |first_flight = January 1930 |introduction = |retired = |status = |primary_user = |more_users = |produced = 1930–1933 |number_built = 45 |unit cost = |developed_from = |variants = }}

The '''Comper C.L.A.7 Swift''' is a British single-seat sporting aircraft designed and produced by the Comper Aircraft Company. It was the company’s first aircraft.

The Swift was designed shortly after Nicholas Comper’s departure from the Royal Air Force to focus on the project. It was designed to be an affordable and compact aircraft that was capable of equivalent performance to that of typical twin-seat light aircraft of the era. The prototype aircraft performed its maiden flight during January 1930; quantity production proceeded shortly thereafter. The majority of aircraft produced were powered by the Pobjoy P radial engine.

It proved to be a relatively successful long distance touring aircraft, conducting multi-day flights to Australia and across the United States amongst other destinations. The Swift gained particular notoriety for its participation in various air races, regularly proving itself to be competitive. One aircraft, owned by the then-Prince of Wales and future King Edward VIII, won second place in the 1932 King's Cup Race. It continued to be appear in air races, particularly those held in Britain, through to the mid-1950s.

==Development== In March 1929, Flight Lieutenant Nicholas Comper left the Royal Air Force and formed the Comper Aircraft Company with the purpose of building an aircraft that he had designed, which he named the ''Comper Swift''.<ref name = "naca 1"/> Prior to this, Comper had designed and flown three aircraft for the Cranwell Light Aeroplane Club, these being the C.L.A.2, C.L.A.3 and C.L.A.4. The Swift would most closely resemble the C.L.A.3, but represented a considerable advance on this aircraft in terms of its performance, controllability, comfort, and appearance.<ref name = "naca 1">NACA 1930, p. 1.</ref>

A key design goal set by Comper for the Swift was to minimise the presence of blind spots, a factor that had undermined the prospects of countless aircraft that were otherwise ideal.<ref name = "naca 2">NACA 1930, p. 2.</ref> This principal of prioritising optimal external visibility for the pilot dictated many attributes and characteristics of the aircraft, such as the placement of the cockpit aft of the high-mounted wing. This in turn necessitated the use of a relatively lightweight engine in order to maintain appropriate weight distribution across the aircraft as there was a considerable amount of vertical surface area placed forward of the center of gravity.<ref name = "naca 2"/> Consequentially, to draw the aircraft's center of vertical area aft of the center of gravity, a relatively large tail unit, particularly in terms of the fin and rudder, were present to draw the center of vertical area aft of the aircraft's center of gravity.<ref name = "naca 2"/>

During January 1930, the prototype Swift (registered ''G-AARX'') performed its maiden flight at Hooton Park.<ref name='Meaden 2003p151'>Meaden 2003, p. 151</ref> This initial aircraft was powered by a 40 hp (30 kW) ABC Scorpion piston engine. After successful tests, seven more aircraft were built in 1930, powered by a 50 hp Salmson A.D.9 radial engine. Trials with Pobjoy P radial engine for use in air racing resulted in all the subsequent aircraft being powered by the Pobjoy R. The last three factory-built aircraft (sometimes referred to as the ''Gipsy Swift'') were fitted with de Havilland Gipsy engines – two with 120 hp (89 kW) Gipsy Major III, and one with a 130 hp (97 kW) Gipsy Major.

==Design== The Comper Swift was a compact single-seat monoplane aircraft with a high-mounted wing.<ref name = "naca 1"/> It was designed as an affordable and low-powered aircraft, albeit one that could deliver performance equal to that of contemporary twin-seat light aircraft. The Swift had a relatively slim appearance with various clean and aesthetically pleasing lines, the fuselage being heavily streamlined, except for the cockpit and a fairly restrictive width adhered to.<ref name = "naca 13">NACA 1930, pp. 1-3.</ref> Despite this, a relatively comfortable cockpit was provisioned along with clear and well-positioned instrumentation, much of it being installed on a dedicated dash.<ref name = "naca 4"/> Of particular note was the engine mounting, which incorporated a patented vibration-absorbing design that proved to be quite effective in practice.<ref name = "naca 5">NACA 1930, p. 5.</ref>

In terms of overall construction, the Swift was primarily composed of spruce and covered by fabric.<ref name='Riding (2003)'>Riding 2003, {{page needed|date=May 2024}}.</ref> It shared considerable structural similarity to Comper's previous aircraft designs; the fuselage comprising a lightweight girder composed of longerons and diagonal struts which attached to the longerons via three-ply wood gussets.<ref name = "naca 3"/> This structure was relatively strong for its low weight and did not require any realignment even with prolonged use. The fuselage was constructed out of three separate units, the front section carried the engine mounting, the middle portion contained the cockpit, while the rear section carried the tail unit.<ref name = "naca 3">NACA 1930, p. 3.</ref>

The aircraft had a monoplane wing that rested on a relatively narrow portion of fuselage while the inefficient portion of wing area within the center was kept proportionally small.<ref name = "naca 3"/> An almost pure cantilever stabiliser was used that was braced by a single pair of v-shaped struts on each side of the fuselage. It featured relatively straightforward construction, consisting of a pair of spruce spars and light girder ribs.<ref name = "naca 3"/> It was built in three sections, the relatively narrow center section of which was built as an integral part of the fuselage and resting on two separate bulkheads. The wing was designed to be folded so that the aircraft only required a minimal storage footprint.<ref name = "naca 34">NACA 1930, pp. 3-4.</ref> All of the wing's fittings were composed of standard steel plate while the covering was composed of fabric.<ref name = "naca 4">NACA 1930, p. 4.</ref>

A somewhat unorthodox undercarriage arrangement was used; elements such as the shock absorbers were entirely housed inside of the fuselage, reducing drag.<ref name = "naca 34"/> The legs directly connected with various internal members. The axles were bent while rearward-sloping radius rods were used to orientate the wheels.<ref name = "naca 4"/> A deck fairing aft of the engine accommodated the aircraft's fuel tank; fuel was supplied via gravity to the engine. This tank, which had a total capacity of nine gallons, had a partition that separated one gallon from the rest and could function as a reserve tank.<ref name = "naca 45">NACA 1930, pp. 4-5.</ref>

==Operational history== The Comper Swift established a formidable reputation during the 1930s as a premier racing and touring aircraft, frequently outperforming larger and more powerful machines. Its operational history is most famously marked by Arthur Butler’s record-breaking flight in 1931, where he flew a Pobjoy-powered Swift (G-ABRE) from England to Darwin, Australia, in just over nine days. This feat demonstrated the aircraft's surprising durability and range, despite its diminutive size. Other notable long-distance exploits included Lieutenant Commander C. Byas’s 10-day solo flight to Cape Town and Alban Ali’s journey from India to Egypt in the "Scarlet Angel," which was later rebuilt and continued to race in the United Kingdom for decades.<ref>{{Cite web |title=Comper Swift |url=https://www.shuttleworth.org/discover/collection/aircraft/comper-swift |access-date=2025-12-27 |website=www.shuttleworth.org |language=en}}</ref>

In the competitive arena of British air racing, the Swift was a perennial fixture, appearing in every King’s Cup Air Race between 1930 and 1937. The aircraft’s high power-to-weight ratio and clean aerodynamics allowed it to secure numerous podium finishes, most notably in 1932 when Flight Lieutenant Edward Fielden piloted a Gipsy-engined Swift owned by the Prince of Wales (the future King Edward VIII) to second place. Renowned aviator Alex Henshaw also launched his storied career in a Swift, winning the Siddeley Trophy at the 1933 King's Cup. The aircraft's agility and speed—reaching up to 140 mph—made it a favorite among sporting pilots who valued performance over cockpit space, which famously had just enough room for a pilot and a set of golf clubs.<ref>{{Cite web |title=Comper CLA.7 Swift |url=https://www.rafmuseum.org.uk/research/collections/comper-cla-7-swift/ |access-date=2025-12-27 |website=RAF Museum |language=en-GB}}</ref>

Following World War II, the surviving Comper Swifts transitioned into the vintage and enthusiast circuit, remaining competitive in handicap racing well into the 1950s. Pilots like Ron Clear and A.L. Cole maintained the type's presence in events such as the Daily Express Air Race, where they often outpaced more modern light aircraft. Of the roughly 45 Swifts originally produced, several have been meticulously preserved or restored to flying condition. Today, the operational legacy of the Swift is carried on by organizations like the Shuttleworth Collection, which operates G-ACTF (the former "Scarlet Angel"), allowing modern audiences to witness the same spirited flight characteristics that made the "pocket racer" a legend of the Interwar period.<ref>{{Cite web |date=2017-12-09 |title=Comper Swift – Historic Races |url=https://warbirdtails.wordpress.com/2017/12/09/comper-swift-historic-races/ |access-date=2025-12-27 |website=Warbird Tails |language=en}}</ref>

==Survivors== * EC-HAM Airworthy, displayed at Cuatro Vientos, Madrid, Spain. Owned by ''Fundación Infante de Orleans.'' Formerly G-ABUU, now painted to represent "EC-AAT" "Ciudad de Manila" as flown by Fernando R. Loring for his March 1933 flight Madrid-Manila.<ref name='Archive 3/04'/> * G-ABTC Stored, in Cornwall.<ref name='Archive 3/04'>Meaden Autumn 2004, {{page needed|date=May 2024}}.</ref> * G-ABUS Stored, believed in France.<ref name='Archive 3/04'/> * G-ACGL On display, RAF Museum, Cosford.<ref name='Riding (2003)'/> * G-ACTF Airworthy, displayed at the Shuttleworth Collection, Old Warden, England<ref>[https://web.archive.org/web/20160922143945/http://www.shuttleworth.org/collection/comperswift/ The Shuttleworth Collection – Comper Swift] Retrieved: 28 February 2017</ref> * G-LCGL Airworthy (replica)<ref name='Riding (2003)'/> * LV-FBA Stored, in Argentina.<ref name='Archive 3/04'/> Also, a second Comper Swift flew in Argentina. Parts saved and stored in Buenos Aires after accident in San Justo 1950– Owner Vicente Bonvisutto (Reg.G-AAZE R-232 LV-YEA LV-FCE) * VH-ACG (Gipsy engine) Airworthy<ref name='Archive 4/04p1480'>Meaden Winter 2004, pp. 148–150</ref><ref>Australian Civil Aircraft Register.</ref> This aircraft was shipped to Oshkosh, USA for the EAA Airventure fly-in, and will be shipped back to Australia after the show.{{cn|date=October 2024}} * VH-UVC Stored, in Sydney, Australia.<ref name='Pilot 2012'>{{cite journal |date=January 2012 |title= Old Timers |journal= Pilot |page=46}}</ref> - According to Classic Wings Magazine, VH-UVC took to the skies for the first time in 55 years on 20 November 2017 at Omaka Airfield, Blenheim, New Zealand.

A new-build aircraft, registered G-ECTF, and built according to the original plans, powered by a Pobjoy Cataract engine, flew for the first time on 2 October 2015.<ref>{{Cite web |url=http://www.pprune.org/private-flying/561221-comper-swift-g-ectf-almost-ready.html |title=Comper Swift G-ECTF...almost ready}}</ref><ref>{{Cite web |url=https://vintageaviationecho.com/rise-of-the-rare/ |title = The Rise of the Rare |first = Huw |last = Hopkins |website = vintageaviationecho.com |date = 10 May 2017}}</ref>

thumb|Comper Swift, G-ACTF.

==Operators== ;{{flag|Spain|1931}} * Spanish Republican Air Force<ref name="SCWA">{{cite web |title=Aircraft that took part in the Spanish Civil War |url=http://www.zi.ku.dk/personal/drnash/model/spain/did.html |access-date=14 April 2012}}</ref> ;{{UK}} * Royal Air Force<ref>Swanborough 1994, p. 369.</ref>

==Specifications (C.L.A.7 Swift)== thumb|Comper Swift with Gypsy III engine 3-view drawing from L'Aerophile Salon 1932 {{Aircraft specs |ref= ''British Civil Aircraft since 1919 Volume 2'',<ref name='Jackson (1974)'>Jackson 1974, {{page needed|date=May 2024}}.</ref> ''National Advisory Committee for Aeronautics''<ref name = "naca 46">NACA 1930, pp. 4-6.</ref> |prime units?= imp  |crew= 1 |length ft= 17 |length in= 8.5 |length note= |span ft= 24 |span in= 0 |span note= |height ft= 5 |height in= 3.5 |height note= |wing area sqft= 90 |wing area note= |aspect ratio= |airfoil= |empty weight lb= 540 |empty weight note= |gross weight lb= 985 |gross weight note= |max takeoff weight lb= |max takeoff weight note= |fuel capacity= |more general=  |eng1 number= 1 |eng1 name= Pobjoy R |eng1 type= seven-cylinder air-cooled geared radial piston engine |eng1 hp= 75 |eng1 note=

|prop blade number= 2 |prop name= fixed-pitch propeller |prop dia ft= |prop dia in= |prop dia note=  |max speed mph= 140 |max speed note= |cruise speed mph= |cruise speed note= |stall speed mph= |stall speed note= |never exceed speed mph= |never exceed speed note= |range miles= 380 |range note= |ferry range miles= |ferry range note= |endurance= |ceiling ft= 22,000 |ceiling note= |climb rate ftmin= |climb rate note= |time to altitude= |lift to drag= |wing loading lb/sqft= |wing loading note= |fuel consumption lb/mi= |power/mass= |more performance= }}

==See also== {{aircontent |related= * Comper Mouse |similar aircraft= |lists= * List of aircraft of the Spanish Republican Air Force |see also= }}

==References== ===Citations=== {{Reflist}}

===Bibliography=== * Boughton, Terence. 1963. ''The Story of The British Light Aeroplane''. John Murray * Follet, Neil (ed.) 2021. Aviation Heritage Vol52, No.2. The Arrivals - C.A. Butler. Journal of Aviation Historical Society of Australia Inc. ISSN 0815-4392 * {{cite book |last = Jackson |first = A.J. |title = British Civil Aircraft since 1919 Volume 2 |year = 1974 |publisher = Putnam |location = London, UK |isbn = 0-370-10010-7 }} * {{cite magazine |last = Johnson |first = Ian D. |title = Round-out |magazine = Air Enthusiast |date = July–August 2002 |issue = 100 |page = 75 |issn = 0143-5450}} * {{cite magazine |last1=Meaden |first1=Jack |last2=Fillmore |first2=Malcolm |date=Winter 2003 |title=The Whole Truth: The Comper Lightplanes: Part One |magazine=Air-Britain Archive |pages=147–152 |publisher=Air-Britain |issn=0262-4923}} * {{cite magazine |last1=Meaden |first1=Jack |last2=Fillmore |first2=Malcolm |date=Autumn 2004 |title=The Whole Truth: The Comper Lightplanes: Part Four |magazine=Air-Britain Archive |pages=99–106 |publisher=Air-Britain |issn=0262-4923}} * {{cite magazine |last1=Meaden |first1=Jack |last2=Fillmore |first2=Malcolm |date=Winter 2004 |title=The Whole Truth: The Comper Lightplanes: Part Five |magazine=Air-Britain Archive |pages=147–151 |publisher=Air-Britain |issn=0262-4923}} * Riding, Richard T. 1987. ''Ultralights: The Early British Classics''. Patrick Stephens {{ISBN|0-85059-748-X}} * Riding, Richard T. March 2003. Database: Comper Swift. Aeroplane Monthly. IPC Media * Smith, Ron. 2005. ''British Built Aircraft Vol.5: Northern England, Scotland, Wales and Northern Ireland'' {{ISBN|0-7524-3487-X}} * Swanborough, Gordon. "British Aircraft at War, 1939–1945". ''Air Pictorial'', August 1994, Vol. 56, no. 8. pp. 369–371. * {{cite book |title = The Illustrated Encyclopedia of Aircraft (Part Work 1982–1985) |publisher = Orbis Publishing}} * [https://ntrs.nasa.gov/citations/19930090387 "The Comper C(LA)7 "Swift" airplane (English) : a high-wing single-seat monoplane"] ''National Advisory Committee for Aeronautics'', 1 February 1930. NACA-AC-108, 93R19677.

==External links== {{commons category|Comper Swift}} * [https://web.archive.org/web/20090321192906/http://www.casa.gov.au/casadata/regsearch/findairs.asp Australian civil aircraft register search] * [https://web.archive.org/web/20070930165324/http://www.britishaircraft.co.uk/aircraftpage.php?ID=804 Comper Swift] – British Aircraft Directory * https://www.flickr.com/photos/airventure2009/3758521992/ * [http://www.nickcomper.co.uk Nick Comper official website - suspended before 3 November 2020]

Swift Category:1930s British sport aircraft Category:Aircraft first flown in 1930 Category:Single-engined tractor aircraft Category:High-wing aircraft Category:Single-engined piston aircraft