The CMC Leopard was a British light personal
business jet
A business jet, private jet, or bizjet is a jet aircraft designed for transporting small groups of people. Business jets may be adapted for other roles, such as the evacuation of casualties or express parcel deliveries, and some are used by pu ...
developed in the 1980s. Two
prototypes were built and flown, but the type was never put into production.
Design and development
The Leopard was a twin-jet, mid-wing
monoplane
A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple planes.
A monoplane has inherently the highest efficiency and lowest drag of any wing confi ...
of
composite construction
Composite construction is a generic term to describe any building construction involving multiple dissimilar materials. Composite construction is often used in building aircraft, watercraft, and building construction. There are several reasons ...
with all-swept flying surfaces and
jet fighter
Fighter aircraft are fixed-wing military aircraft designed primarily for air-to-air combat. In military conflict, the role of fighter aircraft is to establish air superiority of the battlespace. Domination of the airspace above a battlefield ...
-like styling, apart from the
podded engines, mounted on each side of the rear fuselage. The entire
canopy
Canopy may refer to:
Plants
* Canopy (biology), aboveground portion of plant community or crop (including forests)
* Canopy (grape), aboveground portion of grapes
Religion and ceremonies
* Baldachin or canopy of state, typically placed over an ...
hinged forward to allow access to the four reclining seats.
A
mockup
In manufacturing and design, a mockup, or mock-up, is a scale or full-size model of a design or device, used for teaching, demonstration, design evaluation, promotion, and other purposes. A mockup may be a '' prototype'' if it provides at lea ...
was completed in 1982, leading to a prototype (
registration
Register or registration may refer to:
Arts entertainment, and media Music
* Register (music), the relative "height" or range of a note, melody, part, instrument, etc.
* ''Register'', a 2017 album by Travis Miller
* Registration (organ), the ...
) built by the Designability company. The prototype first flew late in 1988. Development suffered a major setback when the engine manufacturer,
Noel Penny Turbines
Noel Penny Turbines was a British company that produced small jet engines, most notably the Noel Penny NPT301. It was established in Coventry in 1972 by Noel Penny, a former designer and chief engineer from Rover Gas Turbines in Solihull. The co ...
, ceased business, leading to the grounding of the prototype. A second, refined prototype (registration ) was then constructed to use
Williams International
Williams International is an American manufacturer of small gas turbine engines based in Pontiac, Michigan, United States. It produces jet engines for cruise missiles and small jet aircraft.
History
Dr. Sam B. Williams worked at Chrysler on ...
turbofan
The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft propulsion. The word "turbofan" is a portmanteau of "turbine" and "fan": the ''turbo'' portion refers to a gas turbine engine which achieves mechanical ...
s. This aircraft also incorporated a
pressurised cabin
Cabin pressurization is a process in which conditioned air is pumped into the cabin of an aircraft or spacecraft in order to create a safe and comfortable environment for passengers and crew flying at high altitudes. For aircraft, this air is ...
, revised
undercarriage, and a generally strengthened airframe. This second prototype was unveiled at the 1996
Farnborough International Airshow
The Farnborough Airshow, officially the Farnborough International Airshow, is a trade exhibition for the aerospace and defence industries, where civilian and military aircraft are demonstrated to potential customers and investors. Since its fir ...
and first flew on 9 April 1997.
The project never progressed beyond the two aircraft built, later redesignated Leopard Four to distinguish them from a six-seat variant proposed in 2001, the Leopard Six. The EJ22 engine could no longer be used due to exclusive deal between Williams and Eclipse,
resulting in the Six being proposed to make use of the larger FJ33. Chief aircraft designer and CMC chairman Ian Chichester-Miles died in 2009, bringing the enterprise to an end.
Aircraft on display

Until 2007, both prototype Leopards, G-BKRL and G-BRNM, were on display at the
Bournemouth Aviation Museum. With the museum temporary closure and relocation in 2008, only the former was retained and moved to the new site, while G-BRNM was acquired by the
Midland Air Museum
The Midland Air Museum (MAM) is situated just outside the village of Baginton in Warwickshire, England, and is adjacent to Coventry Airport. The museum includes the ''Sir Frank Whittle Jet Heritage Centre'' (named after the local aviation pione ...
at Coventry Airport.
Specifications (second prototype)
References
*
*
{{Portalbar, England, Transport
Chichester-Miles aircraft
1980s British business aircraft
Abandoned civil aircraft projects of the United Kingdom
Twinjets
Mid-wing aircraft
Aircraft first flown in 1988