New project for 2023

[Peter Germann]

klick to see and read:

https://www.mycloud.ch/s/S00F6777198BD43397CEECF1D6458D8551CD1ED690C

Comments are appreciated

11.01.23: New link to drawings in .pdf:

https://www.mycloud.ch/s/S002109C6A101057FDF884C5BBDFF7FF540F27B4EB1

[Teodorico Terry]

Tried the link but it did not seem to work.

[Paul Wescott]

The link eventually provided a PDF which showed a 2-view (see photo)

[Steve Helmick]

Indeed it does. Takes awhile to download is all.

I noticed that the elevators are without a fairing to the fuselage and quite  long elevator horn connector wires would be needed. Is there a reason for this?

I would want to keep the iron in the back end at a minimum is all. I've also wondered when somebody would design light weight CF control horns to eliminate the old wire designs from the 1950's. I don't think it's impossible, at least.  Steve

[frank williams]

Nice looking plane ...

I noticed the 1 in. offset in the wing .....and ...  I also noticed the 1/2 inch offset in the  stab. span.

[Peter Germann]

I noticed that the elevators are without a fairing to the fuselage and quite  long elevator horn connector wires would be needed. Is there a reason for this?

The gap between the outer elevator and the fuselage provides space for the adjustable rudder pushrod.

Here are the mechanical detail drawings for Replica 23:

https://www.mycloud.ch/s/S000A15BE0306254FEE3BE135A36046D4C37218A187

Dimensions are in metric millimeters. Divide by 25.4 to get inches

[Bill Hummel]

Hello, Peter!  Very nice design, a bit “out of the box”, I like it!  Could you tell me what airfoil you are using?  Thank you…

[Peter Germann]

Hello, Peter!  Very nice design, a bit “out of the box”, I like it!  Could you tell me what airfoil you are using?  Thank you…

Thanks for asking, Bill.
Root profile is symmetric with max. thickness (with flaps) of 20% at 28% depth and a blunt nose radius of approx. 1 mm or 1. 2 in.
Tip thickness is 16%
For details klick on:
https://www.mycloud.swisscom.ch/s/S000A15BE0306254FEE3BE135A36046D4C37218A187
and download "Rippen 1-2" and "Rippen 15"

[Steve Helmick]

The gap between the outer elevator and the fuselage provides space for the adjustable rudder pushrod.

Here are the mechanical detail drawings for Replica 23:

https://www.mycloud.ch/s/S000A15BE0306254FEE3BE135A36046D4C37218A187

Dimensions are in metric millimeters. Divide by 25.4 to get inches

My German isn't adequate to figure out which .pdf files to open, so that didn't go well!

When I worked (machinist), I much preferred to multiply millimeters by .03937 to convert to inches. Gets the same answer, but it sort of reinforces the fact that 1mm is awful close to .040". I converted metric drawings enough that the .03937 is something I'll never forget...at least until I can't remember my own name. 

The last time we had a push to adopt the metric system was in the early 1980's, and while I was in favor of it, industry here quashed it as too costly. I was working at Boeing at the time. If it came up now, I'm pretty sure the political machine in Washington DC would write a law and jam it through anyway. And probably make it a criminal offense to use inches or mph.  Steve

[kevin king]

Damn. How the heck do you come up with those fancy dancey paint scemes??

[Peter Germann]

Tried the link but it did not seem to work.

11.01.23: New link to drawings in .pdf:

https://www.mycloud.ch/s/S002109C6A101057FDF884C5BBDFF7FF540F27B4EB1