SECTION 2.
ASSEMBLING & DISASSEMBLING,
SYSTEMS DESCRIPTION
TECHNICAL SERVICE MANUAL
SZD-54-2
„Perkoz”
page 2.22
Allstar PZL Glider Sp. z o.o.
Doc No. 542.4.02
Issue II
April 2014
Revision No. 2
May 2017
corrected
2.13. Elevator, aileron and longitudinal trimming control system
Legend to Fig. 2
‒12.
1 - Front flying control
2 - Rear flying control
3 - Control stick
4 - Aileron deflection adjustment tap bolts
5 - Elevator deflection adjustment tap bolts
6 - Aileron control system pushrod between front and rear flying controls
7 - Aileron driving pushrod in fuselage
8 - Aileron driving torsional tube
9 - Elevator control system pushrod between front and rear flying controls
10 - Elevator driving pushrod in fuselage
11 - Elevator driving lever
12 - Elevator driving pushrod in tail
13 - Rear lever
14 - Elevator lever
15 - Trimmer control lever / ball handle (2
nd
version)
16 - Trimmer locking cable
17 - Trimmer pushrod
18 - Trimmer locking lever
19 - Trimmer locking device
20 - Trimmer spring tightener
21 - Trimmer spring
22 - Trimmer locking trigger (only 2
nd
version)
Sailplane does not have classic trimmer, i.e. adjustable flap at the elevator.
It has spring-balancing device, which for simplicity of records in this Manual is
referred to as “trimmer”.
Sailplane manufacturer developed two versions of longitudinal trim system
control solution.
1. Longitudinal trim control lever on a cockpit LH side board. Un-locking of
trimming device is achieved by rotating the lever. Setting up the longitudinal
trim is done by moving the lever forward or backward. Locking of mechanism
is accomplished in desired position after releasing lever which returns to the
original position influenced by the spring.
2. Longitudinal trim locking trigger on control stick and trimming device
adjustment grip on a cockpit LH side board. Un-locking of trimming device is
achieved by pressing the trigger on control stick. Setting up the longitudinal
trim is done by moving the control stick forward or backward. Use the
adjustment grip on a cockpit LH side board to accurate positioning. Locking of
mechanism is accomplished automatically after releasing trigger on control
stick.
2
