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Hawker P.1103


Twin-Seat, Single-Engine Interceptor Proposal


United Kingdom | 1957



"The Hawker P.1103 was proposed against Operational Requirement F.155 as a high-speed, two-seat interceptor platform - it was not furthered."



Authored By: Staff Writer | Last Edited: 10/03/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
During the 1950s, the British Air Ministry drew up its plans for "Operational Requirement F.155" ("O.R. F.155") calling for a new breed of high-speed, high-flying interceptor aircraft to be powered by turbojet or rocket technologies (or a mix of both). The threat-of-the-day was the mighty Soviet Union and its long-range strategic, nuclear-capable bomber force so getting interceptors into the air as quickly as possible was the call-of-the-day for the major players in Western Europe. One of the design projects to come out of the period became Hawker Aircraft's "P.1103" designed by none other than Sir Sydney Camm - chief designer of the classic prop-driven, World War 2-era Hawker "Hurricane" fighter and jet-powered, Cold War-era Hawker "Hunter" fighter.

The project originated in 1955 and had the goal of producing an airframe capable of Mach 2+ speeds, an operating ceiling of up to 60,000 feet, and an in-built missile-carrying capability. Radar would be part of the aircraft's inherent makeup requiring a second crewman to cover the proposed workload made up of piloting, navigation, and weapons/radar management.

The work by Hawker produced an aircraft largely rooted in the original Hunter jet fighter and designed to a very compact structural form. Power was to come from a single afterburning turbojet engine which further helped to keep the design as small as possible and the crew of two would be seated in tandem over the nose of the aircraft. As the nose was to house the intended radar unit so the air intake for the air-breathing turbojet engine was positioned ventrally just under the cockpit floor while the unit would be exhausted by way of a conventional port under the tail at the rear. Wing mainplanes were broad surfaces set near midships and given sweepback (40 degrees) at the leading edges. To each member would be added a wingtip hardpoint for carrying an Air-to-Air Missile (AAM). The tail unit was very "Hunter-like" in shape and arrangement, sporting a single vertical plane with mid-mounted horizontal planes. The body of the aircraft would be comprised mainly of light alloys showcasing excellent streamlining for aerodynamic efficiency.

The end result, as proposed, was a clean, sleek offering centered around a less complex single-engine arrangement. For the required power, the aircraft would be outfitted with the still-in-development de Havilland "Gyron" afterburning turbojet engine offering 20,000lb thrust on dry and 25,000lb thrust with reheat engaged. To aid overall intercepting performance, the aircraft was also slated to house optional rocket boosters at the mid-span point of the mainplanes offering an additional 2,000lb of thrust each. The rocket boosters would provide less than four minutes of burn time but give the aircraft level flying speeds reaching Mach 2.0. Beyond this, the interceptor was to be capable of reaching the required 60,000 foot operating ceiling (68,000 ft estimated) and sport a rate-of-climb of 61,000 feet-per-minute - getting airborne in short order.

The missiles - the primary and only armament afforded to the aircraft - became 2 x Red Top, Red Hebe, or Blue Jay AAMs. The infrared homing Hawker "Red Top" was in-development and would not enter service until 1964 while the radar-guided/radar-homing Vickers "Red Hebe" was eventually cancelled during its development phase. The rear-aspect infrared de Havilland "Blue Jay" ("Firestreak") made it into service in 1957. In any case, the missiles would be supported by the onboard radar fit in the nose.

As completed, the proposed interceptor had an overall length of 63 feet, a wingspan of 39 feet, and a height of 15.5 feet. Maximum Take-Off Weight (MTOW) was estimated to reach 42,000lb with the missiles (Red Hebe variety) loaded.

Due to changing circumstances and requirements in the tumultuous 1950s period, a period which saw the infamous 1957 "Defence White Paper" defense review released, the P.1103 joined other British "paper airplane" designs in falling victim to a focus on Inter-Continental Ballistic Missiles (ICBMs) and a perceived shift to low-level bombers by the enemy - thus rendering high-altitude, high-speed manned interceptors moot. As such, the P.1103 only made it to the design study phase for its part in British aero-history.

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Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Hawker P.1103 Twin-Seat, Single-Engine Interceptor Proposal.
1 x de Havilland "Gyron" afterburning turbojet engine developing 20,000 thrust dry and 25,000lb of thrust with reheat.
Propulsion
870 mph
1,400 kph | 756 kts
Max Speed
68,898 ft
21,000 m | 13 miles
Service Ceiling
61,000 ft/min
18,593 m/min
Rate-of-Climb
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Hawker P.1103 Twin-Seat, Single-Engine Interceptor Proposal.
2
(MANNED)
Crew
62.3 ft
19.00 m
O/A Length
39.4 ft
(12.00 m)
O/A Width
15.6 ft
(4.75 m)
O/A Height
41,888 lb
(19,000 kg)
MTOW
Armament
Available supported armament and special-mission equipment featured in the design of the Hawker P.1103 Twin-Seat, Single-Engine Interceptor Proposal .
PROPOSED:
2 x "Red Top" OR 2 x "Red Hebe" OR 2 x "Blule Jay" Air-to-Air Missiles (AAMs) on wingtip mountings.
Variants
Notable series variants as part of the Hawker P.1103 family line.
P.1103 - Base Project Designation; design study only.
Operators
Global customers who have evaluated and/or operated the Hawker P.1103. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 0 Units

Contractor(s): Hawker Aircraft - UK
National flag of the United Kingdom

[ United Kingdom (cancelled) ]
Relative Max Speed
Hi: 1000mph
Lo: 500mph
Aircraft Max Listed Speed (870mph).

Graph Average of 750 MPH.
Era Crossover
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
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
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Image of the Hawker P.1103
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Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
INTERCEPTION
X-PLANE
Recognition
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Going Further...
The Hawker P.1103 Twin-Seat, Single-Engine Interceptor Proposal appears in the following collections:
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