Пилон - рейсинг

[muns]

Интересно филмче:

http://www.youtube.com/watch?v=EXbIJH8qC9M

[rusi]

Тези модели са интересни и затова поразрових малко и ето какво открих от правилника на FAI

VOLUME F3D
PART FIVE – TECHNICAL REGULATIONS
FOR RADIO CONTROL CONTESTS
5.2. CLASS F3D: PYLON RACING MODEL AIRCRAFT
5.2.1. Definition of Radio Control Pylon Racing Model aircraft:
Model aircraft in which the propulsion energy is provided by a piston type motor and in which the lift is obtained by
aerodynamic forces acting on the supporting surfaces which except for the control areas must remain fixed in flight.
The model aircraft must be of conventional design with forward wing and an aft empennage with the general lines of
a full size aircraft. Unusual or unconventional features must be justified with three view drawings or photographs of
similar features used on full size aircraft.
Para B.3.1. of Section 4b (Builder of the Model aircraft) is not applicable to class F3D.
A pylon team shall consist of a pilot and a mechanic/caller.
All pilots must be accompanied by a caller/mechanic for reasons of safety. The caller can be the team manager,
another competitor from the same team or a third party. In all cases the caller must be the holder of an FAI licence not
necessarily issued by the NAC of the pilot, and must have paid an entry fee.
Each pilot and mechanic/caller shall be registered as a team from the beginning of the competition through to its end.
5.2.2. Motor(s)
Motor(s) must be of the reciprocating piston type, with a maximum total swept volume of 6,6 cm3
5.2.3. Shut-off
The engine shall be equipped with a positive radio controlled engine shut-off. The pilot must be able to shut off his
engine by radio control, on the ground, or in the air, within five seconds of command, irrespective of aircraft altitude.
5.2.3.1. Silencer
The motor(s) shall be fitted with a silencer. Within its length there shall be an expansion chamber of not less than 30
mm diameter and 100 mm length; the exhaust outlet's total area shall not be more than 80 mm2
5.2.4. Propeller
Only fixed propellers may be used. Two-bladed wooden or two or more blade composite resin continuous fibre
construction propellers may be used.
5.2.5. Propeller Spinner
A rounded nose metal spinner of at least 25 mm diameter must be fitted.
5.2.6. Fuselage
5.2.6.1. Cross-section
The fuselage shall have a minimum height of 175 mm and a minimum width of 85 mm, the measurements to be of the
fuselage body and are to exclude any fins, attachments or spacers. Both minimum dimensions must occur at the same
cross-section location. The fuselage at this point will have a minimum cross sectional area of 100 cm2 excluding fillets
and competitors will be required to provide templates to prove this. Fillets are not considered part of the fuselage or
lifting surfaces.
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5.2.6.2. Cowls
The motor or motor(s) must be enclosed, with the exception of the silencer, cylinder head and controls which must be
manipulated during operation of the motor. The cylinder head for this purpose is defined as the top (or outer) 1
centimetre of the motor, excluding ignition plug or compression screw.
5.2.6.3. Landing Gear
The landing gear may have two or three wheel design with the main wheels having a minimum track of 150 mm. The
minimum diameter of the main wheels shall be 57 mm and the minimum width of the wheel or wheel spat or wheel
pant shall be 12 mm for at least 1/3 of the diameter. A tail skid may be used in lieu of a tail wheel. A positive means
of steering on the ground shall be provided, rudder control acceptable.
5.2.6.4. A cockpit or canopy profile must be evident and capable of enclosing a pilot's head 50 mm from the chin to the top of
the head. The canopy need not be transparent and a pilot need not be fitted.
5.2.7. Lifting Surfaces
5.2.7.1. Area of Surfaces
Total projected area of the lifting surfaces (wing and horizontal tail combined) shall be a minimum of 34 dm2. With a
biplane, the smaller of the two wings shall have at least 2/3 of the area of the larger wing. No delta or flying wing type
aircraft are allowed.
5.2.7.2. Wing Span
Minimum wing span shall be 1150 mm for a monoplane and 750 mm for the largest wing of a biplane.
5.2.7.3. Wing Thickness
Wing thickness of the root shall be at least 22 mm for a monoplane, and 18 mm for a biplane. On a biplane with
different size wings, the smaller wing must be at least 13 mm thick at the root. Wing thickness may decrease in a
straight line taper from root to tip as viewed from the leading or trailing edge.
Note: Root shall be defined as the innermost wing section, not counting fillets, that may be measured without
removing wing from fuselage.
On a completely exposed wing, such as on a parasol monoplane or the top wing of most biplanes, the root is that
section of the wing that is intersected by a projection of the outline of the fuselage as seen in the top view, i.e. the root
section would be 50 mm from the centreline of an exposed wing on a model aircraft with a 100 mm wide fuselage.
5.2.8. Weight
Weight less fuel, but including all equipment necessary for flight shall be at least 2200 g and not more than 3000 g. If
ballast is used it must be permanently and safely affixed.
5.2.9. Fuel
Fuel to a standard formula for glow plug and spark ignition motors will be supplied by the organisers. Its composition
shall be 80% methanol, 20% castor oil.
5.2.10. Racing Course Specification
The triangular course will be laid out as follows: The course is 10 laps with individual length of 400 m. Total distance
travelled is 4 km. The race starts at the start-finish line. All take-offs will be ROG, no mechanical device will be used
to assist the aircraft, but hand-pushing is permitted. The race is terminated at the start-finish line 10 full laps later. The
race course specification may be modified in the interest of safety or to suit existing field conditions if safety is not
compromised. The pylons should have a minimum height of 4 m and should not exceed 5 m height.

А това е полигона