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quorneng
03-19-2010, 10:03 PM
What is that?
Before Fokker built the parasol wing DV111 his designer Reinhold Platz experimented with mid and low wing monoplanes powered by both the big in line Mercedes and the Oberursel rotary.
The V25 was aerodynamically very advanced but at the time downward visibility was considered vital so the parasol wing (but it needed 8 struts) was preferred.
The fuselage was almost identical to the Triplane and the wing was completely ply covered.
It should be possible to make a true scale V25 out of Depron. At the same scale as the 24" Pup it would have a span of 27".

dbcisco
03-20-2010, 03:19 PM
Here is an inline V25.

quorneng
03-20-2010, 11:37 PM
dbisco
With the exhaust out the side rather that vertically upwards (V20) this is the V21. It was bigger than the V25 and had a fuselage and engine similar to the DVII.
Fokker did not build a low wing version with the Mercedes engine but did build one with a parasol wing, the V29.
It apparently had an excellent performance but the Mercedes engines were in short supply as all available were allocated to the DVII.

The parasol wing DVIII, with its inferior Oberursal rotary engine, was put into production as that engine was readily available. I am sure Fokker did not mind as he actually owned the Oberursal factory!

enemyace19
09-05-2010, 01:54 AM
They had some cool ideas ahead of their time!