JK-05L Junior is a strut supported high-wing monoplane of the composite construction based on Parabeam® vinyl-ester resins composite material.
Fuselage has a form of integral self-supporting structure with side by side seats. The width of the cockpit is 47.25 inches From the technological point of view, the fuselage structure is made of two symmetrical parts and the floor board, which is glued into when both parts of the fuselage are united. Cockpit seats are made of polyethylene foam. The canopy is made of two transparent doors (made of UV-resistant Plexiglas), which are opened upward. Their hinges are situated along the axis of symmetry of the plane.
Structure, which connect both wings is a two dimension framework made of steel pipes. The fin is integral part of the fuselage. Three axis, landing gear with a front wheel coupled with a rudder. The main landing gear consists of two wheels with brake system mounted on legs made of composite. The wheels are covered with composite fairings. Wings have rectangular shape with characteristic narrowing near the fuselage to improve visibility from the cockpit.
|Wing span||10,76 (m)|
|Wing surface||10,2 (m²)|
|Overall length||5,70 (m)|
|Overall height||2,25 (m)|
|Horizontal tail surface||1,44 (m²)|
|Own weight||297 (kg)|
|Max. take-off weight||472,5 kg|
|Distributed load||41 (kg/m²)|
|Cruising speed, 75% power:||180 (km/h)>|
|Vne (maximum speed)||240 (km/h)|
|Vs (minimum speed, landing flaps)||55 (km/h)|
|Climb speed||6 (m/s)|
|Tank capacity||70 (l)|
Wings have a frame construction with a girder supported by struts. The flaperons have also frame construction, empty inside, attached to the wing with five hinges, electrically operated. The flaperon is made of carbon laminate to provide anti torque resistance and keep the flaperon relatively low (anti- flutter requirements).
System of controls is based on push rods. Elevator trimmer is electrically controlled from the cockpit. In standard version, there is only one control stick in the middle of the cockpit. The plane is powered by ROTAX 912 UL engine (80HP) as base and can be upgraded to fit ROTAX 912ULS (100HP). Fuel tanks capacity is 18.5 gallons and they are situated safely behind the seats.
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