LACY 2 HF
safety in turbulent condiBons. Nonetheless, the pilot always has to pilot according to the prevailing
weather condiBons, the pilot is the ulBmate safety factor.
We recommend acBve piloBng, 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 correcBon is made.
Do not maintain any correcBon for longer than necessary (braked) this would cause the wing to enter into
criBcal flying situaBon. Whenever necessary, control a situaBon, 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 LACY 2 HF, heavy turbulent condiBons may cause part of the
wing to collapse asymmetrically. This usually happens when the pilot has not foreseen this possible
reacBon 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 LACY 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 sBll 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 operaBon to provoke the re-opening.
Take care not to over-brake on the side that is sBll flying (turn control) and when the collapse has been
solved; remember to let the wing recover its flying speed.
Symmetric collapse
In normal flying condiBons the design of the LACY 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 condiBons, on entry or exit of strong
thermals or lack of adapBng the use of the accelerator to the prevailing air condiBons. 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-inflaBon. Release the brake lines immediately to recover opBmum flight
speed.
NegaBve spin
This configuraBon is out of the normal flight behaviour of the LACY 2 HF. Certain circumstances however,
may provoke this configuraBon such as trying to turn when the wing is flying at very low speed (while
heavily braking). It is not easy to give any recommendaBons about this situaBon since it varies depending
on the circumstances. Remember that you should restore the relaBve air speed over the wing. To achieve
this, progressively reduce the pressure on the brake lines and let the wing gain speed. The normal reacBon
would be a lateral surge with a turn tendency no greater than 360º before restoring to normal flight
condiBons.
WAY Gliders
LACY 2 HF–User’s Manual– version1.3, 03/01/2024
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