WAY Gliders COSY 2 HF, Руководство пользователя, Страница: 11 / 27

COSY 2 HF
We recommend acCve piloCng, making the necessary fine adjustments to keep the wing in control. He/she
should stop braking to allow it to fly at the required wing speed ager a correcCon is made.
Do not maintain any correcCon for longer than necessary (braked) this would cause the wing to enter into
criCcal flying situaCon. Whenever necessary, control a situaCon, react to it and then re-establish the
required speed.
4.2 POSSIBLE CONFIGURATIONS
We recommend that training to master these manoeuvres be carried out under the supervision of a
competent school.
Asymmetric collapse
In spite of the stability of the profile of the COSY 2 HF, heavy turbulent condiCons may cause part of the
wing to collapse asymmetrically. This usually happens when the pilot has not foreseen this possible
reacCon of the wing. When the wing is about to experience an asymmetric collapse the brake lines and the
harness will transmit a loss of pressure to the pilot. To prevent the collapse from happening, pull the brake
line corresponding to the compromised side of the wing, this will increase the angle of incidence. If the
collapse does happen the COSY 2 HF will not react violently, the turn tendency is very gradual and it is
easily controlled. Lean your body towards the side that is sCll flying in order to counteract the turn and to
maintain a straight course, if necessary slightly slow down the same side. The collapse will normally open
by itself but if that does not happen, pull completely on the brake line on the side, which has collapsed
(100%). Do this with a firm movement. You may have to repeat this operaCon to provoke the re-opening.
Take care not to over-brake on the side that is sCll flying (turn control) and when the collapse has been
solved; remember to let the wing recover its flying speed.
Symmetric collapse
In normal flying condiCons the design of the COSY 2 HF ensures that a symmetric collapse is quite
improbable. The profile of the wing has been designed to widely tolerate extreme changes in the angle of
incidence. A symmetric collapse may occur in heavy turbulent condiCons, on entry or exit of strong
thermals or lack of adapCng the use of the accelerator to the prevailing air condiCons. Symmetrical
collapses usually re-inflate without the glider turning but you can symmetrically apply the brake lines with a
quick deep pump to quicken the re-inflaCon. Release the brake lines immediately to recover opCmum flight
speed.
NegaCve spin
This configuraCon is out of the normal flight behaviour of the COSY 2 HF. Certain circumstances however,
may provoke this configuraCon such as trying to turn when the wing is flying at very low speed (while
heavily braking). It is not easy to give any recommendaCons about this situaCon since it varies depending
on the circumstances. Remember that you should restore the relaCve air speed over the wing. To achieve
this, progressively reduce the pressure on the brake lines and let the wing gain speed. The normal reacCon
would be a lateral surge with a turn tendency no greater than 360º before restoring to normal flight
condiCons.
Parachutal stall
WAY Gliders COSY 2 HF–User’s Manual– version1.2, 03/01/2024
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