Advance acoustic XI 21, Руководство пользователя

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Fig 1
3:1, low gear
AFig 2
2:1, high gear
By moving the knots and therefore the position of the locking balls
, the travel and loading of the accelerate system can be altered.
The total travel of the system can be changed, and with it the positi-
on at which the 3:1 + (low gear, fig 1) ratio changes to 2:1
(high gear fig. 2).
If the knots are moved down, the change from 3:1 (fig1) to 2:1 (fig 2) ra-
tios happens sooner – here the speedbar loading is raised, but the to-
tal speed system travel thereafter is shortened. If the knots are moved
upwards the gear change to 2:1 occurs later, and total travel is leng-
thened (longer legs).
The XI speed system is arranged so that the profile shape of the wing
is fully retained over the angle-of-attack range of the speed system.
This maintains the beneficial qualities of the profile at high speeds.
Caution: The speed system is correctly adjusted when you can
use the full travel available on the risers. Make certain that the
speed lines are not set too short, thus causing the wing to be
pre-accelerated all the time!
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