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2. LOCATION (Figures 1 and 1A)
COMPONENT QTY AREA ACCESS DOOR REFERENCE
Propeller 1 110 111 61-10-00
Spinner 1 110 / 61-10-00
3. DESCRIPTION (Figures 2 and 2A)
A. Propeller
The three-blade metal propeller is a constant speed and variable pitch propeller. Its characteristics are :
- nominal diameter : 78 in (1.98 m),
- minimum diameter after rework : 76 in (1.93 m).
The forged light-alloy two-piece hub is bolted along the plane of rotation. Internally the hub contains the pitch change mechanism and the blade roots. The piston, installed in the front of the hub, provides power to change the pitch when acted upon by an outside force.
Boosted oil pressure, from the propeller governor, increases blade angle while centrifugal twisting movement aims at positioning blades towards low pitch.
NOTE : Full low pitch corresponds to high RPM (takeoff, climb, approach and landing), high pitch corresponds to low RPM.
The propeller may be equipped with the de-icing system option - refer to Figure 2A.
The propeller de-icing system protects the propeller blades in case of unexpected icing conditions. The de-icing system is based on ejection of "glycol" on each propeller blade leading edge.
B. Spinner
The spinner preserves the aerodynamic profile of the propeller assembly at the propeller hub. It includes holes for its attachments around its edge and three cut-outs which permit installation over the propeller body.
AFAD
Validity : Three-blade propeller 61 10-00 (..)Page 1
JUN 02
14611000AAAJWZ14000 Propeller assembly - Location of components
Figure 1
AFAD
Validity : Three-blade propeller 61-10-00 (BM) Page 2
JUN 02
De-iced propeller assembly - Location of components
Figure 1A
AFAD
Validity : Three-blade propeller 61 10-00 ,..,Page 3
JUN 02
1 - Brush ring
2 - Engine side bulkhead
3 - Blade
4 - Grease nipple
5 - Spinner
6 - Cylinder side bulkhead
7 - Adhesive tape
8 - Adjusting screw
9 - Cylinder
10 - Hub
11 - Installation bolt and nut
11
14306000AAAEWZ14000
Vis de reglage de la butee petit pas (devisser pour augmenter
la vitesse de rotation statique)
Low pitch adjusting screw (unscrew to increase the
static rotation speed)
Propeller assembly - Description
Figure 2
AFAD
Validity : Three-blade propeller 61-10-00ABM,Page 4
JUN 02
1 - Brush ring
2 - Slinger ring
3 - Engine side bulkhead
4 - Blade
5 - Grease nipple
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本文链接地址：TB20 MAINTENANCE MANUAL 61 螺旋桨 TB20飞机维护手册(7)
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