CARBON FIBER AIRCRAFT

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Storch is an two seaters ultralight three-axis aircraft designed to get more elevated performances in comparison to the analogous traditional means. His tall aerodynamic efficiency allows short take-off and landing runs, rapid climbs and fast cruises with modest fuel consumptions. Peculiarity of this design is the elevated comfort of flight, for which pilot and passenger can enjoy for the very excellent visibility, the available space and the low noise level inside the cockpit. To strengthen the high value of this project, the aircraft is very easy to fly with a optimum control at low speed, and a easy operate aircraft life. It is a rectangular plant type with counterwind bracing. Used profile is laminar type with full span ailerons separate from the wing (Junker type) on CL and HS versions, instead the flap is separate and independent from the aileron, since they are integrated in the profile of the wing, but only in the S version. These particular configurations allow a wide interval of low resistance due to the control of the wake of the wing practiced by the depression of the profiles. The fuselage is made by a hull in fiber of glass with a self-carrying structure strengthened by four rims that they guarantee rigidity of it. The main rim of strength crosses the whole cabin and, on it, flight loads acting on the tail boom are supported. Tail boom pipe, is made with aluminium alloy, of the same type used for the wing spar, and has been fixed to the fuselage through rivets. The front zone of the cockpit is delimited by the firewall, in fiberglass and stainless steel sheet, on which is bound the engine mount. Two entry doors, with opening of the type similar to "wing of gull", have a frame in composite fiber and they are dressed with transparent material. Two seats are made with a steel pipe structure dressed again in dacron or, as optional, in alcantara®: every seat, adjustable, is fixed to the fuselage through belts and rapid un-locking plugs. Empennage are made entirely in composite material to guarantee lightness and structural rigidity. Fin is directly locked with rivets to tail boom, and the rudder is directly hinged on it by connections directly attached with rivets to composite matrix. Stabilator is a complete excursion type and is linked to the tail boom with a particular steel hinge designed only for this purpose. Stabilator also includes a trim on pitch axis that is directly controlled from the cockpit and that it also absolves to the function of anti-tab. To avoid flutter events, Stabilator, is provided with balancing counterweights. In the lower area of the tail boom, it take place a specially designed caudal fin. Landing gear is a fixed tricycle type. Main gear has been fixed to the fuselage through a mount realized in welded & painted steel pipes fixed to the fuselage through bolts. The two wheels of the main gear are Aluminium alloy separable semi-rims type with sealed bearings and tires with air chamber. On the versions CL and HS, are installed drum brakes wich can act separately by two commands levers positioned on the central cockpit support between the two seats; on the version S (optional for CL & HS), instead, the brakes are disk type with hydraulic common command. Aircraft is controllable around three axis through two ailerons, with full opening only on the models CL and HS, a stabilator and a rudder for jaw control. Ailerons are commanded by the cloche through rigid rods and levers, while the stabilator, always commanded by the cloche, is controlled by bowden push-pull type cables. Ailerons control, opportunely designed, all ow the differential command of the same. Moreover, they have, in the hinge points, of spherical terminals that confer to the whole command a good freedom with precision in the movement. Rudder is always controlled by pedals by bowden push-pull type cables. Stabilator is provided with an automatic anti-tab that can be commanded by the trim. On CL and HS version is fitted a mechanical flapperon system, with a manual command to three positions, that allows to modify the incidence of the ailerons in function of the dynamics of the flight. Only on the S version, there are installed separate flaps, in the nearest part to the root of the wing. They operated through an electric servo and are also provided with an analogique indicator, positioned on the instrument panel, that shows their angle of deflection with measurement in degrees. All Storch are provided with the followings instruments of assistance to flight: pressure altimeter, airspeed indicator, rate of climb indicator, turn coordination indic. (ball) and magnetic compass. Only on the version S is there is the indicator for deflection angle of the flaps. For the engine instruments we can list: RPM counter, heads temperature (CHT), temperature of exhaust gas (EGT) and, only for the four stroke engines, pressure and temperature of the lubricating engine oil. All models are provided with engine run time indicator. The evaluation of the tanks fuel level is effected visually through special wing root rib inspection holes that allow to see the real fuel level still available in the tank. Two low fuel level lamps are supplied for all models Other instruments are available as optional.
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CL Amphibian
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Pictures
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