Air Creation FUN 450 Talimat ve Bakım El Kitabı - Sayfa 8

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− Behavior during stalling :

The stalling point is reached more easily with a backward hang point position. Once the stall angle of

attack is reached, the control bar starts pushing back forcefully. Avoiding any resistance to this

tendency for a short while allows the wing to recover a correct speed. In that case, the loss of altitude

will be less than 10 m. (33 ft) If the control bar stays pushed out despite the warning signs, the wing

will stall and the loss of altitude may easily reach some 30 m (100 ft). An asymmetrical start on one

wing is possible, particularly during the running in of the sail (first 50 flying hours). To avoid

tumbling risk, the stalling exercises must be imperatively carried out with engine at idle, with a

very slow decrease in speed obtained by a progressive control bar pushing out.

− Banking :

Banking of the wing has to go along with progressive pushing out of the control bar in order to ease

the maneuver and to balance the banking. On the opposite, pull the control bar in, allows getting back

faster in the horizontal line after banking. With a low cruise speed adjustment, it is necessary to

increase the speed before the wing is put into banking to avoid stalling of the lower wing. An increase

in engine power is also advised to maintain the flight level during the turn.

− Behavior in strong wind :

− Once grounded and motionless

Park the aircraft perpendicularly to the direction of the wind, with its windward wing lowered. Fix

the A-frame on the front tube of the trike with the Velcro used for packing the battens of the sail

and put chocks under the three wheels. Take the wing off the trike and put it flat on the ground

windward, if the aircraft is not going to be used immediately.

− Ground-runs :

Keep the sail flat into a headwind. Push the control bar against the trike front strut with a tailwind.

This will avoid flipping. Keep the wing horizontal with a side wind. It may be difficult to hold the

A-frame in its position. Never let the wind lift the wing up.

− Take-off and landing :

As ground run distances are considerably reduced by strong wind, try to face the wind. If it is

impossible, perform the take-off and landing maneuvers with greater speed than you would

normally do, in order to diminish the drift angle and counter the effects of the gradient. Keep to

the axis of the runway with the front wheel control without considering efforts on the sail.

− Load effect - dynamic stability :

An increase of the carrying load will require more effort for pitch and roll, and an increase in stall

speed.

WARNING :

Do not fly without the nose bonnet. This streamlining has considerable effect over pitch and roll

stability of the wing. Its lack alters the internal pressure of the sail, which may result in great

modifications of the airfoil shape.

Instruction and Maintenance Handbook FUN 450

Tél. : 33 (0) 4 75 93 66 66 - Fax : 33 (0) 4 75 35 04 03 - Internet : www.aircreation.fr

AIR CREATION Aérodrome de Lanas - 07200 AUBENAS - France

EDITION : MARS 2005

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