- Short Seamew
name = SB.6 Seamew
type = Anti-submarine aircraft
caption = Seamew prototype XA213
first flight =
23 August1953 [Green and Pollinger 1956, p. 260.]
retired = 1957
primary user =
Royal Navy Fleet Air Arm
more users =
Royal Naval Volunteer Reserve
number built = 19
unit cost =
variants with their own articles =distinguish2|the 1928The Short SB.6 Seamew was a "curious-looking" British aircraft designed in 1951 by
Supermarine Seamewor 1940 Curtiss SO3C Seamew David Keith-Lucasof Shorts as a lightweight anti-submarineplatform to replace the Royal NavyFleet Air Arm (FAA)'s Grumman Avenger AS 4 with the Reserve branch of the service. It first flew on 23 August 1953, but, due to poor performance coupled with shifting defence doctrine, it never reached service and only 19 were built before the project was cancelled. It has been described as a "camel amongst race-horses".Winchester 2005, p. 46.]
Design and development
The Short Seamew was selected to fulfill
AdmiraltySpecification M.123D for a simple, lightweight anti-submarine aircraft capable of unassisted operation from any of the Royal Navy's aircraft carriers in all but the worst of conditions. Although specifically designed for naval operations, the Seamew was also intended for land-based use by the RAF. [Flintham, Vic. [http://www.vicflintham.co.uk/post-war-research-aircraft-and-prototypes/Cancelled.html "Short Seamew".] "Cancelled Types", 2007. Retrieved: 12 August 2008.] It was to be suitable for mass production and operation by the Air Branch of the Royal Naval Volunteer Reserve (RNVR). This specification was in response to the alarming increase in capabilities of the Soviet submarine forces following the Second World War.
Three prototypes were ordered in April 1952 and the first flight ("XA209"), piloted by its test pilot, Sqn. Ldr. Walter J. "Wally" Runciman, [Sqdn.Ldr.
W.J. Runciman, A.F.C, D.F.M] took place on 23 August 1953. This same aircraft, also piloted by Runciman, took part in the 1953 Farnborough Airshowthree weeks later. In 1954 both "XA209" and the second prototype "XA213" took part at Farnborough, where the following year both prototypes and two production AS Mk 1 models ("XE171" and "XE172") gave a formation display. [Barnes and James 1989, pp. 450–453.]
The MR Mark 2 was similar in every respect to the AS Mk 1 except that it was optimised for land-based use from hastily prepared airstrips. Naval equipment was deleted although manual wing folding was retained. Slightly heavier than the naval version, the MR Mk 2 had oversize tyres and could carry a higher weapons load.
The pilot and observer were located in tandem cockpits located high up in the front of the deep, narrow fuselage. They sat atop the
Armstrong SiddeleyMamba turbopropin front and the weapons bay to the rear of them. The design had originally called for the tried and tested Rolls-Royce Merlinpiston engine but the Royal Navy had made it policy to phase out piston engines, in order that supplies of highly flammable high octane aviation fuelneed not be carried in large quantities on ships. The turboprop engine also caused less airframe vibration and would therefore have less impact on the performance of the radar scanner mounted below the engine housing.
For simplicity, and so that a nose wheel would not obscure the forward field of the radar scanner, a fixed tail wheel undercarriage was used. The long stroke necessary on the main undercarriage to give the radar scanner and propeller adequate clearance from the ground resulted in an alarming attitude on the ground and the cockpits mounted at a seemingly perilous height. The pilot and observer sat very far forward in order that the pilot could have a reasonable field of downward vision for takeoff and landing and so that both he and the observer had a good field of view e.g. for spotting submarines even when in level flight.
The large, broad-chord wings featured power-folding and
pylons for the carriage of rockets, depth charges, flares and small bombs. The large, slab-like, tailplane was mounted high on the vertical stabiliser, requiring the rudder to be split into upper and lower sections. The fixed undercarriage legs could be jettisoned in the event of ditching.Winchester 2005, p. 47.]
The handling characteristics of the Seamew were poor. The prototypes were heavily modified with fixed leading-edge slats, slots added in the trailing-edge flaps, alterations to the
ailerons and slats added to the tailplane roots. Although something of an improvement over the initial models, the handling was never wholly satisfactory. Arthur Pearcy wrote "only Short Brothers' test pilot Wally Runciman seemed able to outwit its vicious tendencies and exploit its latent manoeuvrability to the limit."Pearcy 1990]
An order was placed in February 1955 for 60 aircraft (split evenly between the FAA and RAF), with Seamew "XA213" successfully completing carrier trials on HMS "Bulwark" in July and December 1955. Naval service flight trials with two Seamews were carried out with
700 Naval Air Squadronin November 1956, which included catapult trials and around 200 takeoffs and landings on HMS "Warrior".
The RAF lost interest after four Mk 2s were built with three of them converted to AS1 standard; the fourth ("XE175") was flown by S/L W. "Wally" J. Runciman for a series of sales tours in 1956 to Italy (March), Yugoslavia (April) and West Germany (May). It was this same aircraft in which Runciman was killed when he crashed during the Sydenham (Belfast) Air Display on
9 June 1956. Rumours that the crash had been caused by a material failure were current at the time but the accident investigation board did not confirm them.
Meanwhile the FAA decided that the RNVR Avengers would be replaced by Seamews, but only four had been taken on charge by the time the RNVR squadrons were disbanded in March 1957 in keeping with the
1957 Defence White Paper, before any Seamews were allocated to them. Seven aircraft eventually delivered to the FAA were scrapped at RNAS Lossiemouth, and the other 11, complete and awaiting delivery, were scrapped at Sydenham. The last surviving Seamew, "XE180" which had been purchased by Shorts on 31 August 1959for ground instruction at its Apprentice Training School, was scrapped in 1967. [ [http://www.belfastforum.co.uk/index.php/topic,451.1800.html "XE180"] ]
The Rolls-Royce Heritage Trust has preserved a Seamew engine, which is found at its Coventry branch.
pecifications (Seamew AS 1)
plane or copter?=plane
jet or prop?=prop
payload main=1,844 lb
payload alt=836 kg
payload more=of weapons
length main=41 ft
length alt=12.50 m
span main=55 ft
span alt=16.75 m)
**Wings folded 23 ft (7.01 m
height main= 13 ft 5in
height alt= 4.09 m)
**Wings folded 15 ft 7.5 in (4.76 m
area main=550 ft²
area alt=51 m²
empty weight main=9,795 lb
empty weight alt=4,443 kg
loaded weight main=14,400 lb
loaded weight alt=6,804 kg
max takeoff weight main=15,000 lb
max takeoff weight alt=6,790 kg
Armstrong Siddeley Mamba
type of prop=
number of props=1
power main=1,590 shp
power alt=1,190 kW
max speed main=236 mph
max speed alt=205 knots, 380 km/h
range main=750 mi
range alt=650 nm, 1,200 km
climb rate main=
climb rate alt=
loading main=26 lb/ft²
loading alt=127 kg/m²
power/mass main=0.11 hp/lb
power/mass alt=180 W/kg
rockets=Several rockets carried underwing
List of aircraft of the Fleet Air Arm
* Barnes, C.H. with revisions by Derek N. James. "Shorts Aircraft since 1900". London: Putnam, 1989 (revised). ISBN 0-85177-819-4.
* Green, William and Gerald Pollinger. "The Observer's Book of Aircraft". London: Frederick Warne & Co. Ltd. 1956.
* Pearcy, Arthur. "Short Seamew". "Aviation News 6",
19 July 1990.
* Runciman, Squadron Leader W.J. "Pilot's Flying Log Book". "Squadron Leader W.J. Runciman, A.F.C., D.F.M." Original held by his family, a copy held by P. Sortehaug, 4, William St., Dunedin, NZ.
* "The Seamew Calls a Halt to the Rising Cost of Air Power." "Shorts Quarterly Review, Vol. 2, No. 3, Autumn 1953".
* "The Short Seamew Light Anti-submarine Aircraft" (promotional brochure). Belfast: Short Brothers and Harland Limited, c. 1953.
* Williams, Ray. "Fly Navy: Aircraft of the Fleet Air Arm since 1945". London: Airlife Publishing, 1989. ISBN 1-85310-057-9.
* Winchester, Jim, ed. "Short Seamew". "The World's Worst Aircraft: From Pioneering Failures to Multimillion Dollar Disasters". London: Amber Books Ltd., 2005. ISBN 1-904687-34-2.
* [http://www.aviationarchive.org.uk/Gpages/html/G3631.html Short Seamew AS1]
* [http://www.vicflintham.co.uk/post-war-research-aircraft-and-prototypes/Cancelled.htmlCancelled Types]
Wikimedia Foundation. 2010.
См. также в других словарях:
Short Brothers — Infobox Company company name = Short Brothers plc company company type = Unquoted Public limited company founder = foundation = Battersea 1908 location city = Belfast location country = United Kingdom key people = area served = industry =… … Wikipedia
Seamew — Sea mew, seamew or seamewe may refer to* Common Gull, or mew gull * Supermarine Seamew, an amphibian seaplane * Short Seamew, an anti submarine aircraft * Curtiss SO3C Seamew, an unsuccessful World War II floatplane *SEA ME WE 3 (cable system), a … Wikipedia
Short Brothers — plc Tipo subsidiaria Fundación 1908 en Battersea Sede Belfast ,Irlanda del Norte … Wikipedia Español
Short Brothers (Flugzeughersteller) — Short Brothers (auch Shorts) war ein britischer Flugzeughersteller, dessen Nachfolger gegenwärtig in Belfast angesiedelt ist. Shorts gilt als die erste Flugzeugfirma der Welt und war ein bedeutender Hersteller von Flugbooten während des Zweiten… … Deutsch Wikipedia
Short 360 — Short 360 … Deutsch Wikipedia
Short Folder — is a generic name often applied to several different Short Brothers aircraft types designed and built prior to and during World War I. Short Brothers developed and patented [Patents secured by Short Brothers including patents nos. 1792/13,… … Wikipedia
Short 184 — beim Start Die Short 184 war ein britischer Torpedobomber im Ersten Weltkrieg. Es war das erste Flugzeug, welches ein Schiff mit einem Torpedo versenkte. Als kurz vor dem Ersten Weltkrieg die ersten britischen Torpedoversuche gemacht wurden,… … Deutsch Wikipedia
Short 330 — Short 330 … Deutsch Wikipedia
Short Skyvan — Short Skyvan … Deutsch Wikipedia
Short Sperrin — Short SA.4 Sperrin … Deutsch Wikipedia