DA 40 NG AFM
Airplane
Description
Doc. # 6.01.15-E
Rev. 3
01-Jul-2014
Page 7 - 25
7.9.3 PROPELLER
An mt-Propeller MTV-6-R/190-69 hydraulically regulated 3-bladed constant speed propeller
is installed. The propeller has wood-composite blades with fiber-reinforced plastic coating
and metal leading edge protection; in the region of the propeller hub the leading edge
is coated with adhesive PU tape. These blades combine the lowest weight whilst
minimizing vibration.
Propeller Control
The propeller pitch is controlled by the P-853-16 mt-propeller governor. The pitch is set
by the ECU via an electro-mechanical actuator on the governor. To change the blade
pitch angle, gearbox oil is pumped into the propeller hub which leads to an increase in
pitch and a lower propeller RPM. When oil leaves the propeller hub pitch is reduced and
RPM will increase.
In flight depending on the power setting the propeller pitch is adjusted such that the
required RPM will be obtained as shown in the following diagram.
Содержание DA 40 NG
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