Aircraft / Aviation Vehicles & Artillery Infantry Arms Warships & Submarines Military Pay Scale Military Ranks

Hawker Siddeley HS.1201

Lightweight Fighter Design Study (1976)

Aviation / Aerospace

1 / 1
Image copyright www.MilitaryFactory.com; No Reproduction Permitted.

Jump-to: Specifications

The Hawker Siddeley HS.1201 design study series followed the ultimately abandoned HS.1200 and completely reworked the fighter approach.

Authored By: Staff Writer | Last Edited: 07/09/2020 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.
Britain's Hawker Siddeley undertook several design studies in the period that preceded the selection of the Eurofighter "Typhoon" for the Royal Air Force (RAF). This included the earlier HS.1200 series of 1976 (detailed elsewhere on this site) which was inevitably followed by the "HS.1201". Whereas the single-seat, single-engine HS.1200 sported an appearance not unlike the American General Dynamics F-16 "Fighting Falcon" (save for the use of twin vertical tail fins), the HS.1201 was a completely different approach involving the engine (housed in a nacelle) seated over the rear section of the fuselage. The HS.1201 was detailed as a light-class fighter promising ease-of-maintenance, low cost operation and exceptional speed.

In either case, neither design was selected for further development.

The HS.1201 held a slim fuselage shape with the single-seat cockpit positioned at its usual place near the nose. Radar would have been housed in the sharply-pointed nosecone. The pilot sat reclined (as in the F-16 to help increase G-tolerance for the operator) in the ejection seat and a lightly framed canopy provided excellent vision out-of-the-cockpit. The positioning of the intended Rolls-Royce engine over the fuselage allowed the fuselage proper to be as small in area as possible and contributed immensely to the lightweight nature of this fighter. This also aided in maintenance and repair accessibility as well as general replacement of the entire unit, keeping long-term operating costs to a minimum.

The wing mainplane members (of variable incidence design) were situated at midships and given slightly sweptback trailing lines and noticeably sweptback leading edges. Each member was home to a single hardpoint and the wingtips were reserved for Air to-Air Missiles (AAMs). The tail section sat the single engine installation atop a short supporting structure, the powerplant straddled on either side by outward-canted vertical tail fins shielding the engine's heat output to an extent while also doubling as horizontal planes (this tailplane arrangement known as a "V-tail" or "Butterfly Tail"). Ground-running would be accomplished by a conventional, retractable / wheeled tricycle arrangement with the main legs located under each mainplane and the nose leg positioned under and aft of the cockpit area.

Because of the slim nature of the overall design, the 27mm internal automatic cannons were buried within the wing mainplanes to better address engagement angles in a dogfight (and work closely with the mainplane's variable incidence design). With missiles expended, dogfights would inevitably evolved into a turning battle in an attempt to gain the advantageous "kill shot". The gun pods therefore produced outcroppings at each wing leading and trailing edges and ultimately would share internal volume with the main landing gear assemblies. Beyond the cannon armament there would be 4 x AIM-9 "Sidewinder" missiles carried giving the fighter proper footing against enemy marauders - be they like-minded fighter types or bombers emerging from Soviet bases.

Designs in the HS.1201 study series would go on to include the "HS.1201-6" (RB.199 engine, full-span flaps), the "HS.1201-7" (RB.409-50R engine of 9,710lb dry thrust and 17,310lb with afterburner), the "HS.1201-8" (RB.246-06 engine), and the "HS.1201-9" (RB.409-50R engine, leading edge strakes, fixed wing mainplanes). As drawn up, the aircraft were given a running length of 49.9 feet with a wingspan of 33.6 feet. Weight reached 23,000lb when fully loaded with fuel and missiles and estimated performance included a top speed nearing Mach 1.4 (at about 6,000 feet of altitude).


Service Year

United Kingdom national flag graphic
United Kingdom

Development Ended.


Hawker Siddeley - UK
National flag of the United Kingdom United Kingdom (abandoned)
(OPERATORS list includes past, present, and future operators when applicable)
Air-to-Air Combat, Fighter
General ability to actively engage other aircraft of similar form and function, typically through guns, missiles, and/or aerial rockets.
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.

49.9 ft
(15.20 m)
33.6 ft
(10.25 m)
22,961 lb
(10,415 kg)
(Showcased structural values pertain to the Hawker Siddeley HS.1201-7 production variant)
Installed: 1 x Rolls-Royce RB.409-50R afterburning engine developing 9,710lb of dry thrust and 17, 310lb of thrust with reheat.
Max Speed
1,075 mph
(1,730 kph | 934 kts)
40,026 ft
(12,200 m | 8 mi)

♦ MACH Regime (Sonic)
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 Hawker Siddeley HS.1201-7 production variant. Compare this aircraft entry against any other in our database. View aircraft by powerplant type)
2 x 27mm internal automatic cannons set in pods at each wing mainplane member (fixed, forward-firing).

4 x AIM-9 "Sidewinder" Short-Range, Air-to-Air Missiles (SRAAMs) on wings, one each at wing tips and one each under wing.

Supported Types

Graphical image of an aircraft automatic cannon
Graphical image of an air-to-air missile weapon
Graphical image of a short-range air-to-air missile

(Not all ordnance types may be represented in the showcase above)
Hardpoint Mountings: 4

HS.1201 - Base Project Designation.
HS.1201-6 - Original form with variable incidence wing mainplanes, RB.199 engine; full-span flaps on mainplanes.
HS.1201-7 - RB.409-50R engine; Mach 1.19 estimated speed.
HS.1201-8 - RB.246-06 engine.
HS.1201-9 - RB-409-50R engine; leading edge strakes; fixed wing mainplanes,

Military lapel ribbon for Operation Allied Force
Military lapel ribbon for the Arab-Israeli War
Military lapel ribbon for the Battle of Britain
Military lapel ribbon for the Battle of Midway
Military lapel ribbon for the Berlin Airlift
Military lapel ribbon for the Chaco War
Military lapel ribbon for the Cold War
Military lapel ribbon for the Cuban Missile Crisis
Military lapel ribbon for pioneering aircraft
Military lapel ribbon for the Falklands War
Military lapel ribbon for the French-Indochina War
Military lapel ribbon for the Golden Age of Flight
Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Iran-Iraq War
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1982 Lebanon War
Military lapel ribbon for the Malayan Emergency
Military lapel ribbon representing modern aircraft
Military lapel ribbon for the attack on Pearl Harbor
Military lapel ribbon for the Six Day War
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Vietnam War
Military lapel ribbon for Warsaw Pact of the Cold War-era
Military lapel ribbon for the WASP (WW2)
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2
Military lapel ribbon for the Yom Kippur War
Military lapel ribbon for experimental x-plane aircraft

Ribbon graphics not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective aerial campaigns / operations / aviation periods.


Disclaimer | Privacy Policy | Cookies

2022 Military Pay Scale Army Ranks Navy Ranks Air Force Ranks Alphabet Code DoD Dictionary American War Deaths French Military Victories Vietnam War Casualties

The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com.

Part of a network of sites that includes GlobalFirepower, a data-driven property used in ranking the top military powers of the world, WDMMA.org, the World Directory of Modern Military Aircraft, and SR71blackbird.org, detailing the history of the world's most iconic spyplane.

Facebook Logo YouTube Logo

www.MilitaryFactory.com • All Rights Reserved • Content ©2003-