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BAe P.103

Vertical Take-Off and Landing (VTOL) Fighter Study [ 1980 ]

The BAe P.103 fighter design study to come out of Warton during the late-1970s, early-1980s was a unique take on the VTOL requirement.

Authored By: Staff Writer | Last Edited: 06/13/2021 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

During the 1970s and 1980s, British studies into Vertical Take-Off and Landing (VTOL) fighter aircraft reached a fever pitch. While a mountain of designs were eventually drawn up, many would never see the light of day or exist solely as proposals rejected by higher-ups. The British Aerospace (BAe) concern certainly contributed to the effort by way of their Warton and Kingston sites during a period where no seemingly terrible idea was "off the table".

The P.103 project fighter emerged from the Warton location and this offering was one of the more unique designs to come out of the company during this time. The primary feature of the aircraft was its engines housed in underslung, outboard nacelles that could tilt to offer the needed VTOL performance and also coming in-line to provide the required forward propulsion. Design work on this single-seat, twin-engine solution was begun in 1978 with the hope that flight-testing could be had before the middle of the 1980s.

The tilting action of the engines, mounted to the mainplanes, necessitated a non-traditional arrangement in which foreplanes at the front of the fuselage sides took the place of conventional tailplanes normally positioned at the rear near the engine exhaust port. The mainplanes themselves were conventionally rear-swept with the engine nacelles positioned at their midway point. The members were shoulder-mounted along the sides of the semi-rounded fuselage and sported dihedral inboard and anhedral outboard of the engine housings. Control surfaces would have to be spread about the angled leading and trailing edges where possible due to the engines braking up the wing design.

The engine housings were essentially rounded-rectangles with circular intakes for aspiration and exhaust ports. The tail unit featured a single vertical plane and sat stop the tapering end of the fuselage which terminated at a shallow rounded cone. The single-seat, pressurized cockpit (no doubt sporting an ejection seat) was positioned ahead of the wing surfaces and aft of a traditional nosecone (to house radar in the finalized design). A wheeled / retractable tricycle undercarriage would be used for ground-running - the nose leg disappearing under the cockpit floor and the main legs pulling into the cramped fuselage section.

The Turbo-Union RB.199 turbofan (developed by the joint venture involving Rolls-Royce of Britain, MBB of West Germany, and Aeritalia of Italy) was at the center of the propulsion scheme. The units were short enough to be featured in the tilting engine arrangement and, more importantly, offered the inherent power required of the VTOL action. The mechanical system was to be able to move the engine through a range of up to 90-degrees - not only allowing for runway-free operation, but also shortening take-off runs if the fighter was operated in the usual, conventional take-off manner.

Beyond wind tunnel testing to prove aerodynamics sound, a full-sized mockup was completed at the Warton facility during 1980. However, the design did not proceed beyond this stage as its inherent complexity naturally doomed the venture before it went airborne. The mechanism needed to manage the tilting function was just one issue - the other being the loss of one engine in the design (due to failure and whatnot) destined to doom the entire aircraft and pilot in one fell swoop.

One short-lived version of this same aircraft study reworked the mainplanes to be forward-swept / forward-cranked. Interestingly, the foreplanes were retained as rearward-swept appendages.

With these failings, this optimistic aircraft project fell to British aviation history before the end of 1982.©MilitaryFactory.com
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Service Year

United Kingdom national flag graphic
United Kingdom

Development Ended.


British Aerospace (BAe) (Warton) - UK
(View other Aviaton-Related Manufacturers)
National flag of the United Kingdom United Kingdom (cancelled)
(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.
Ground Attack (Bombing, Strafing)
Ability to conduct aerial bombing of ground targets by way of (but not limited to) guns, bombs, missiles, rockets, and the like.
Close-Air Support (CAS)
Developed to operate in close proximity to active ground elements by way of a broad array of air-to-ground ordnance and munitions options.
X-Plane (Developmental, Prototype, Technology Demonstrator)
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.

Series has a tactical capability to take-off and / or land vertically, a quality commonly associated with helicopters.
Houses, or can house (through specialized variants), radar equipment for searching, tracking, and engagement of enemy elements.
Incorporates two or more engines, enhancing survivability and / or performance.
Small foreplanes ahead of the mainplanes reduce wing-loading and / or enhance maneuverability during high angle-of-attack or stall actions.
Can accelerate to higher speeds than average aircraft of its time.
Assisted process of allowing its pilot and / or crew to eject in the event of an airborne emergency.
Supports pressurization required at higher operating altitudes for crew survival.
Features partially- or wholly-enclosed crew workspaces.
Features retracting / retractable undercarriage to preserve aerodynamic efficiency.

50.0 ft
(15.25 m)
42.0 ft
(12.80 m)
(Showcased structural values pertain to the base BAe P.103 production variant)
monoplane / shoulder-mounted / swept-back, w canards OR swept-forward, w canards
Design utilizes a single primary wing mainplane; this represent the most popular mainplane arrangement.
Mainplanes are mounted at the upper section of the fuselage, generally at the imaginary line intersecting the pilot's shoulders.
The planform features wing sweep back along the leading edges of the mainplane, promoting higher operating speeds.
Swept-Back, with Canards
The planform features wing sweep back along the leading edges of the mainplane, promoting higher operating speeds, with added controlling provided through smaller foreplanes ('canards') seated ahead of the mainplanes.
Swept-Forward (Forward Cranked)
The mainplanes showcase a forward sweep of the leading and trailing edges.
Swept-Forward, with Canards
The mainplanes showcase a forward sweep of the leading and trailing edges while the arrangement also relies on added controlling through smaller foreplanes ('canards') seated ahead of the mainplanes.
(Structural descriptors pertain to the base BAe P.103 production variant)
Installed: 2 x Turbo-Union (Rolls-Royce, MBB, Aeritalia) RB.199-62R afterburning turbofan engines developing 20,750lb of thrust dry and up to 37,850lb of thrust with reheat; engines fitted to wing mainplane member tiling mechanism for VTOL operations.
Max Speed
1,553 mph
(2,500 kph | 1,350 kts)

♦ 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 base BAe P.103 production variant. Performance specifications showcased above are subject to environmental factors as well as aircraft configuration. Estimates are made when Real Data not available. Compare this aircraft entry against any other in our database or View aircraft by powerplant type)
2 x 20mm internal automatic cannons in lower forward fuselage.
2 x Air-to-Air Missiles (AAMs) at wingtips (one per wing member).

Other hardpoints to carry additional AAMs and most likely plumbed for jettisonable fuel tanks to extend inherent operational ranges.

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
Graphical image of an aircraft external fuel tank

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



Fuselage Centerline
Fuselage Port/Wingroot
Fuselage Starboard/Wingroot
Wingtip Mount(s)
Internal Bay(s)
Not Used

Note: Diagram above does not take into account inline hardpoints (mounting positions seated one-behind-the-other).

P.103 - Project Designation; full-scale mockup completed before project's end.

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