Focke-Achgelis Fa 223 pics 3 - Focke-Achgelis_Fa223.jpg ...

*

In article , Stormin' Norman says...

On 8 Sep 2018 06:52:06 -0700, Miloch
wrote:

Your post prompted me to wonder about how they controlled this
impressive machine. I found another site with quite a bit of detailed
information. Below is an excerpt and a link to the site.

"...Control of the Fa 223 was in the following manner. The control
column was used to give longitudinal control by equal cyclic-pitch
change of the rotor blades, and lateral control by differential
collective-pitch change of the rotor blades. The rudder pedals were
used to give yaw control by differential cyclic-pitch change of the
rotor blades, the control effect being increased by use of the rudder
during forward flight. A trimmer wheel was provided for tailplane
adjustment, and all control links were by cables. Two machines
(numbered 13 and 16) were experimentally fitted with a separate
collective-pitch lever next to the throttle, and a throttle governor
to maintain a constant engine speed, but this arrangement was under
development only. On all other machines, the pilot had a lever with
only two positions for collective pitch, one for powered setting and
one for autorotation. In addition, an automatic device adjusted the
tailplane and altered the blade pitch from the powered setting to the
autorotation setting for a glide landing in the event of a power
failure, but the pitch could not be reset in the air. Thus, apart from
pitch adjustments for attitude control, the rotors must be regarded as
having had a fixed pitch, the lift being controlled by the engine
throttle. This fact reduced the safety, handling, and performance
characteristics and, in order to maintain a constant rotor speed
during a climb, progressive engine throttling was necessary and this
cancelled out the benefits of an engine supercharger. Considerable
skill and experience was also necessary during hovering and low-speed
flight because of the very sluggish lift control; more than one Fa 223
was lost when making downwind turns at low level. ...."

http://www.aviastar.org/helicopters_...cke_drache.php


Interesting info...two rotors...left and right...are just 90° off from a
Chinooks front and back rotors...on paper, it looks simple but the handling
characteristics via collective and cyclic would be hugely different...I think.

Looks like you got all the pics...all I got were three pics plus the vid and not
the pic you referenced.



*