Bf 109K-4
Aircraft Handbook
art 9A General Equipment
III - Flight Monitoring and Navigation Instruments A. Description
Fig 3. Flight Monitoring Instruments.
III. 2: Overview of the Engine Monitoring instruments (For key to diagram see text)
Flight Monitoring Instruments
The following instruments are installed for flight monitoring purposes (see Fig. 3):
Airspeed Indicator
Heatable Pitot Tube
Pressure Altimeter
Rate of Climb Indicator
Differential Pressure Tank
Also in the instrument panel there is a cutout for the installation of an aircraft clock.
1. Airspeed Indicator
The airspeed indicator with a measuring range of 100 to 900 kni/h is positioned on the upper left of the instrument flight panel.
2. Pitot Tube
The Heatable pitot tube for airspeed is installed in the wing tip of the left wing. Transmission of the dynamic and static pressures to the airspeed indicator is through tubing.
3 Pressure Altimeter
For altitude measurement, a pressure altimeter is fitted on the instrument flight panel underneath the airspeed indicator. The altimeter is connected to the Static pressure line.
4. Rate of Climb Indicator
To indicate the climb and descent speeds of the aircraft, a rate of climb indicator is installed on the upper right of the instrument tlight panel. The indicator is connected on one side to the static pressure line and on the other side to the differential pressure tank.
5. Differential Pressure Tank
The differential pressure tank for the rate of climb indicator is located in the fuselage ahead of the instiiiment panel and is attached by clamps to two mounting brackets, which are screwed to the Z-section former of the forward fuselage deck.
Fig.3: Overview of the Flight Monitoring Instruments
1. Airspeed Indicator
2. Pitot Tube
3. Pitot Pressure Tubing
4. Electrical-lead for Pitot Heater
5. Pressure Altimeter
6. Rate of Climb Indicator
7. Differential Pressure Tank
8. Circuit Breaker Panel
Navigation Instruments
Fig. 4: Overview of the Navigation as well as the Rescue and safety equipment
1. Master Compass , 2. Repeater Compass, 3. Artificial Horizon, 4. Motor-Generator, 5. Safety Belts, 6. Flare Gun Port, 7. Circuit Breaker for the Compass Installation
The following navigation instruments are installed (see Fig. 4):
Master Compass
Repeater Compass
Artificial Horizon
Convertor
6. Master Compass
The master compass is in the lower rear fuselage in section 5 in a spring suspension mounting. After serial No.......the Master Compass is installed lit upper fuselage section 5 and in reconnaissance aircraft in upper fuselage section 6. It is connected electrically to the repeater compass and controls its course card.
7. Repeater Compass
The repeater compass is installed at the bottom of the instrument flight panel It is a navigation instrument whose course display is controlled electrically by the master compass.
Fig. 5: Master Compass
1. Master Compass, 2. Mounting
8. Artificial Horizon
The artificial horizon displays the attitude of the aircraft in space and is positioned at the top of the instrument flight panel.
9. Motor-Generator
The Motor-Generator powers the artificial horizon and is mounted in front of the instrument panel on the left fuselage wall.
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