The Cosmos Phase II and Phase III are a series of

French French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with Franc ...

two-seat

flying wing A flying wing is a tailless fixed-wing aircraft that has no definite fuselage, with its crew, payload, fuel, and equipment housed inside the main wing structure. A flying wing may have various small protuberances such as pods, nacelles, blis ...

ultralight trikes that were produced by

Cosmos ULM Cosmos ULM (Ultra Léger Motorisé, en, Motorized Ultralight), also called Cosmos Ultralight SA de CV, is an ultralight trike aircraft manufacturer that was originally based in Fontaine-lès-Dijon, France. Its aircraft are supplied as factory co ...

Fontaine-lès-Dijon Fontaine-lès-Dijon () is a commune in the Côte-d'Or department in eastern France. It is known for the Couvent et Basilique Saint-Bernard, a collection of buildings on the site of the birthplace of Saint Bernard of Clairvaux. Population Se ...

and now by Cosmos Ultralight of

Puente de Ixtla Puente de Ixtla is a city in the Mexican state of Morelos. It stands at . The city serves as the municipal seat for the surrounding municipality of the same name. The municipality reported 66,435 inhabitants in the year 2015 census. The town gets ...

, Mexico. The aircraft are supplied as factory completed aircraft and are not available as kits.Cliche, Andre: ''Ultralight Aircraft Shopper's Guide'' 8th Edition, page C-9. Cybair Limited Publishing, 2001. Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook'', page 142. BAI Communications. Bertrand, Noel; Rene Coulon; et al: ''World Directory of Leisure Aviation 2003-04'', pages 97-98. Pagefast Ltd, Lancaster OK, 2003. ISSN 1368-485XBayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 208. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X

Design and development

The series was developed from the earlier

Cosmos Bison The Cosmos Bison, also called the Cosmos Bidulm, is a French two-seat, ultralight trike that is produced by Cosmos ULM. The aircraft is only supplied as a completed aircraft and is not available as a kit.Bertrand, Noel; Rene Coulon; et al: '' ...

, adding larger seats, landing gear suspension and a new engine mounting system to reduce vibration. It was designed to comply with European

Fédération Aéronautique Internationale The (; FAI; en, World Air Sports Federation) is the world governing body for air sports, and also stewards definitions regarding human spaceflight. It was founded on 14 October 1905, and is headquartered in Lausanne, Switzerland. It maintai ...

microlight classification. It features a cable-braced hang glider-style high-wing, weight-shift controls, a two-seats-in- tandem open cockpit, tricycle landing gear and a single engine in

pusher configuration In an aircraft with a pusher configuration (as opposed to a tractor configuration), the propeller(s) are mounted behind their respective engine(s). Since a pusher propeller is mounted behind the engine, the drive shaft is in compression in nor ...

. The aircraft wing is made from bolted-together aluminum tubing, with its single, or optionally double-surface, wing covered in Trilam sailcloth. The wing is supported by a single tube-type kingpost and uses an "A" frame control bar. A variety of wings and engines can be fitted, each with a different model designation. When equipped with a Rotax 503 or Rotax 582 two-stroke engine, the aircraft is designated as a ''Phase II'', and when equipped with a

Rotax 912 The Rotax 912 is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine with a reduction gearbox. It features liquid-cooled cylinder heads and air-cooled cylinders. Originally equipped with carburetors, late ...

four-stroke A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directio ...

engine, it is designated as a ''Phase III''. Wings used include the double surface Top 12.9, Top 14.9, Chronos 16, and the single surface Zoom 19. The wing designation reflects the area in square metres. The landing gear features gas-filled

shock absorber A shock absorber or damper is a mechanical or hydraulic device designed to absorb and damp shock impulses. It does this by converting the kinetic energy of the shock into another form of energy (typically heat) which is then dissipated. Most sh ...

suspension on all three wheels, nose wheel steering and a nose wheel-mounted

drum brake A drum brake is a brake that uses friction caused by a set of shoes or pads that press outward against a rotating cylinder-shaped part called a brake drum. The term ''drum brake'' usually means a brake in which shoes press on the inner surfac ...

, as well as a parking brake. The aircraft can be disassembled for storage or ground transportation, taking half an hour for set-up. The series has a wide range of options, including a glider aero-tow kit, floats, salt-water protection, ballistic parachute and dual controls for

flight training Flight training is a course of study used when learning to pilot an aircraft. The overall purpose of primary and intermediate flight training is the acquisition and honing of basic airmanship skills. Flight training can be conducted under a str ...

Variants

The models in the line reflect combinations of wings and engines fitted. Documented versions include: ;Phase II 503 Chronos 16 :Equipped with a Rotax 503 powerplant and a Chronos 16 double surface wing. Cruise speed . ;Phase II 582 Top 12.9 :Equipped with a Rotax 582 powerplant and a Top 12.9 double surface wing. Cruise speed . ;Phase III 912 Top 14.9 :Equipped with a

powerplant and a Top 14.9 double surface wing. Cruise speed .

Specifications (Phase II)

References

External links

* {{Cosmos ULM aircraft 1990s French ultralight aircraft 1990s Mexican ultralight aircraft 1990s French sport aircraft 1990s Mexican sport aircraft Single-engined pusher aircraft Ultralight trikes