L 23 SUPER - BLANIK
686 04 KUNOVICE
CZECH REPUBLIC
SAILPLANE FLIGHT MANUAL
Do - L 23. 1012.5
4.4.5 USE OF AIR BRAKES
It is recommended to use the air brakes in following cases :
1. To reduce landing especially roll on rough ground.
2. To increase accuracy of the landing manoeuvre.
Note:
In case of using air brakes during landing, it is necessary to
maintain an approach speed of about 5 kts higher, because the
stall speed with fully opened air brakes is about 3-4 kts higher.
3. To avoid exceeding the never exceed speed
unusual atti-
tude recoveries (for example during aerobatics).
It is recommended to use the air brakes in any case when the sailplane
starts to increase the speed and the pilot is uncertain of his orientation
or how to manage the situation. Configuration with air brakes
extended” will ensure that
is not exceeded.Use of air brakes will
enhance the safety and makes handling easier because the extended
air brakes tend to stabilize the sailplane.
The control lever should be held firmly when operating the air brakes
to ensure smooth deployment and retraction.
Appr.
Dec 1/93
4-14