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Original Year
 1994
# of pieces
 147
Categories
 Aircraft:  Helicopters
Dimensions
 36(L)x8(W)x14(H)
Features
 Rotating main and tail rotor
Other Views

8812/8429 Aero Hawk II
iso revolve
Click the image to download the LDraw file of this model.
Model by Benjamin Wendl
This small helicopter, released in 1994, was one of the smallest to date.  It features rotating main and tail rotors.  The canopy is constructed from semi-rigid pneumatic tubing.  1994 was the first year that pneumatic tubing was used as a design element, and this in one of two models in which this was done this year.  This technique would continue far into the future.

A lovely little turbine part from the System line gives the engine a nice aesthetic touch.

This set was re-released in 2002 as 8429.

Features
Rotors
The rotors' rotation is driven by an input crank on the left side.  This crank drives a set of 8 and 24 tooth gears.  The 8 tooth gear drives the main rotor.  The 24 tooth crown gear meshes with a second 8 tooth spur in turn drives another such set.  The last axle runs back to a set of 8 and 24 tooth gears which reverse the gear ratio of the previous set for the tail rotor.  Both main and tail rotors turn at the same rate, with a ratio of 3:1 with respect to the input crank

The main and tail rotors each have 2 blades. The tail rotor uses the specialized 2 blade rotor part for this purpose.

 crank    rotor
 Click for an animation of the rotor in motion.
Skids
The landing skids are constructed axles supported by liftarms.  A mysterious set of wheels at the rear edge serve no apparent function.  Maybe they needed to correct a forward CG problem?
 Skids
 

Other Views
Side View
side view
 Top View
top view
Front View
front view
Back View
back view
Computer Render
Render

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