www.apcoaviation.com
22
To help re-inflation it is possible to pull some brake on the collapsed side and release immediately.
In the event of a big deflation, i.e. 70%, it is important to apply brake on the inflated side of the wing, but care must be taken not to pull
too much as you could stall the flying side.
The glider is very solid and has a strong tendency to re-inflate after collapse.
CRAVAT
In case a cravat should occur from an asymmetric collapse or other manoeuvres, it is important to keep your flying direction by applying
some brake on the opposite side and then it can usually be opened by pulling down on the stabilo line of the affected side while
countering the turn with the opposite brake and weight shift.
FRONT STALL OR SYMMETRIC COLLAPSE
In the event of a front stall the glider will normally re-inflate on its own immediately without any change of direction. To speed up re-
inflation briefly apply 30%-40% brake (to pump open the leading edge).
Do not hold the brakes down
permanently to avoid an
unwanted stall.
B-STALL
The F3 has a very clean, stable B stall.
To enter the B stall the pilot has to pull the first 20-cm slowly until the glider loses forward speed and starts to descend vertically.
Then the pilot can pull more on the B until he/she attains a stable 7 to 9 m/s descent rate. The Glider has no tendency to front rosette or
become pitch unstable. To exit the B stall the pilot releases the B slowly until the glider has regained its shape and then the
last 15 cm
fast
to prevent the glider from entering deep stall.
The F3 can be controlled directionally in the B stall by pulling more on one B riser than on the other to create a turn in any direction. The
B-stall is a safe controlled way of losing altitude fast without any forward speed.
BIG EARS
Big ears are possible on the F3, and can be an effective descent method.
This should only be done with the trimmers in the closed to neutral range.
Big ears are induces by pulling the outer A-Lines, which are on their own riser leg, making it simple to identify and induce.
DEEP STALL (Parachutal Stall)
Under normal flying conditions the F3 will have no tendency to enter deep stall. All gliders can however under certain conditions enter
and stay in deep stall configuration (as a result of ageing of materials, improper maintenance or pilot induced).