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Aerospatiale Alouette Lab Report

900 Words4 Pages

1.1 Introduction:
The Aerospatiale Alouette III is a multi-purpose light helicopter having a single engine and was developed by Sud Aviation and manufactured by Aerospatiale of France in 1959. It is the successor to the Alouette II, it is larger and has more seating capability. 1.2 Dimensions
Minimum Length (blade: folded): 10.03 m 32.90 ft
Width (blades folded): 2.60 m 8.53 ft
Height: 3.00 m 9.84 ft
Main rotor disc diameter: 11.02 m 36.15 ft
Tail rotor disc diameter: 1.91 m 6.27 ft
Main rotor disc area: …show more content…

It rotates at 2,001 rpm when the main rotor turns at 353.2 rpm.
Its direction of rotation is clockwise when viewed from behind.
The tail rotor blades consist of two bonded light alloy metal sheets with stainless steel leading edge protection.
They are individually articulated relative to the hub, in the flapping plane, and are connected to a collective-pitch control system.
The tail rotor is driven through a torque shaft connected at the front end to the main gearbox, and at the rear, to the tail rotor gearbox.
Figure 4: Tail rotor

1.4.5 Flight controls and servo units
The cabin is so arranged as to permit piloting the aircraft from the central or right hand front seats.
Removable dual controls can be installed in front of the central front seat (optional).
Hydraulic servo units are provided in both the cyclic and collective pitch control systems. The tail rotor control system incorporates a hydraulic damper.
Manual control is possible in the event of servo unit failure.
The aircraft includes provisions for the installation of a Stability Augmentation System as optional

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