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Supermarine (Vickers) Type 559


High-Speed, High-Altitude Interceptor Proposal (1955)


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The Vickers Type 559 high-speed, high-altitude interceptor was intended to satisfy a Cold War-era requirement for the Royal Air Force - it was not furthered.



Authored By: Staff Writer | Last Edited: 05/05/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.
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Operational Requirement (OR) "F.155" of 1955, calling for a high-speed, high-altitude interceptor, resulted in many proposed designs to come from the usual British defense houses - Armstrong-Whitworth (AW), Fairey, Hawker, Vickers, etc. For Vickers, their contribution became the "Type 559", a large, twin-seat combination propulsion scheme speedster designed around a canard wing configuration. Like others in the series of F.155 proposals, the Type 559 went nowhere as British thinking shifted towards the missile age following the Defence White Paper review of May 1957.

Nuclear-capable Soviet bombers poised the biggest threat to freedom and stability in the West so, as a response, interceptor programs were taken on by the British as well as the United States and the French. The need was great for a Mach 2.0 or greater aircraft built around powerful jets with the possibility of using rockets to augment output thrust. Coupled with this high-performance would be an all-in-one weapons suite encompassing advanced missiles (heat-seeking and beam-riding) as well as Airborne Interceptor (A.I.) radar, the latter set in the nosecone.

To help manage the technologically-heavy aircraft, a crew of two was a necessity and for maximum survival, ejection seats, multiple engines, and cockpit pressurization would become requirements.

The resultant design was unique in that it utilized a canard-centric arrangement - small planes fitted towards the front end of the fuselage. These would work in conjunction with a more traditional set of mainplanes fitted further aft in the design. The mainplanes were given straight trailing edges, swept-back leading edges, and featured the vertical tail fins at their tips. The fuselage was made deep to accommodate the twin turbojets seated over-under (as in the subsequent English Electric Lighting jet-powered fighter later taken on by the RAF). The rocket boosters would straddle the engines at their exhaust ports, concentrating thrust around the aircraft's centerline and mass. Aspiration for the turbojet engines would be had through a ventrally situated intake with ductwork running to the engines at the rear. The entire aircraft would be supported when running on the ground by a wholly retractable undercarriage involving a single-wheeled nose leg and twin-wheeled main legs, the wheels at these legs seated in line. All would retract into the body of the aircraft - which would feature aluminum allow throughout its construction with critical heat-generating components set to be skinned in titanium.
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The cockpit was set at the front of the fuselage in typical fashion, though aft of the nosecone set to house the interception radar fit. The cockpit would be framed as usual and seat its two crew - pilot and navigator/weapons operator - in a side-by-side arrangement.

The aircraft was drawn up with a running length of 68.2 feet, a wingspan of 42 feet and a height of 15.2 feet. Empty weight reached 41,500lb while Maximum Take-Off Weight (MTOW) peaked at near 30,000lb. All told, the Type 559 was one of the larger submissions entertained for requirement F.155.

At the heart of the Type 559's propulsion scheme was a combination powerplant involving two afterburning turbojets and a pair of rocket motors for boost power. This was intended to satisfy high cruising speeds, dash speeds, and rate-of-climb for the interceptor design. 2 x de Havilland "Gyron" PS.26/1 turbojets would output 20,000lb of thrust each while 2 x de Havilland "Spectre Junior" boosters would supply momentary thrust output, adding an additional 5,000lb of power each. All told, this would help to get the interceptor up to speeds of Mach 2.5 and a service ceiling near 60,000 feet while rate-of-climb was estimated to be 51,000 feet-per-minute.

As for armament, and like other F.155 entrants, the Type 559 was set to carry a pair of air-to-air missiles, these to become either the "Red Hebe" beam-riding weapon or the "Blue Jay" Mk.4 heat-seeker. As the wing tips of the mainplanes were taken up by the vertical tail fins, this meant that the missiles would be seated against the fuselage atop wingstub-like protrusions. The supports were added near midships along the dorsal facing of the fuselage to complete the aircraft's look (this physical feature was also used in the English Electric Lighting fighter).

With the end of the F.155/F.155T requirement following the defense review of 1957, hopes for the Type 559 ended as well.

Specifications



Service Year
1955

Origin
United Kingdom national flag graphic
United Kingdom

Status
CANCELLED
Development Ended.
Crew
2

Production
0
UNITS


Vickers-Armstrong (Supermarine) - UK
National flag of the United Kingdom United Kingdom
(OPERATORS list includes past, present, and future operators when applicable)
Interception
Ability to intercept inbound aerial threats by way of high-performance, typically speed and rate-of-climb.
X-Plane (Developmental, Prototype, Technology Demonstrator)
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.


Length
68.2 ft
(20.80 m)
Width/Span
42.0 ft
(12.80 m)
Height
15.3 ft
(4.65 m)
Empty Wgt
41,491 lb
(18,820 kg)
MTOW
66,139 lb
(30,000 kg)
Wgt Diff
+24,648 lb
(+11,180 kg)
(Showcased structural values pertain to the Supermarine Type 559 production variant)
Installed: 2 x de Havilland "Gyron" PS.26/1 afterburning turbojet engines developing 20,000lb of thrust each; 2 x de Havilland "Spectre" rocket motor producing 5,000lb of thrust each.
Max Speed
1,920 mph
(3,090 kph | 1,668 kts)
Ceiling
59,055 ft
(18,000 m | 11 mi)
Range
1,025 mi
(1,650 km | 3,056 nm)
Rate-of-Climb
51,000 ft/min
(15,545 m/min)


♦ 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


(Showcased performance specifications pertain to the Supermarine Type 559 production variant. Compare this aircraft entry against any other in our database. View aircraft by powerplant type)
PROPOSED:
2 x "Red Hebe" radar-guided air-to-air missiles OR 2 x "Blue Jay" InfraRed (IR) air-to-air missiles mounted over the fuselage.


Supported Types


Graphical image of an air-to-air missile weapon
Graphical image of a short-range air-to-air missile
Graphical image of an aircraft anti-radar/anti-radiation missile


(Not all ordnance types may be represented in the showcase above)
Hardpoint Mountings: 2


Type 559 - Base Project Designation.


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