Luft 19

[richard]

It's not really a project ,but only a patent .

Kark Tapernon ; Düsseldorf , 27 April 1918

 

[Tophe]

A single engine driving 2 propellers? what for? anti-torque? what about bailing out?

 

[hole in the ground]

possibly it is simply demonstrating an alternative location for the prop?

The advantage here being the ability to fire forward without an interrupter gear.

 

[Upagan]

I think there is no bailing out in a WW I aircraft

 

[Jemiba]

It really don't look like a detailed proposal. Especially it isn't recognisable, how
the fuselage would have been divided, so I would agree with hole in the ground.
The concept of the fuselage mounted prop seems to have inspired many designers
(see http://www.secretprojects.co.uk/forum/index.php/topic,4951.0/highlight,schwade.html)
The expected advantages, except a clear field of fire, probably were better aerodynamics.
And AFAIK all constructors trying such a design encountered problems with engine
cooling ! :

 

[SSgt Baloo]

New guy here. After closely examining the illo., it appears to me that the proposal wasn't an in-the-fuselage prop, but an external prop mounted alongside the fuselage (presumably with another counter-rotating prop on the fart side).

 

[Jemiba]

Welcome on board,

you may be quite right, it can well be something like here in this cutout from
a photo of the Morane Saulnier TRK (from "90 ans de succès, de MS à EADS
SOCATA").
Unfortunately I couldn't find the patent in the web still yet. Any clue, where to
look, richard ? ???

 

[richard]

In fact an early VTOL !!
The two prop are COAXIAL .
So far I understand ???,the device could stop the aircraft in the air ,and blowing the wing the plane land verticaly !
The same for take off .

My german being as poor as my english (but my tailor is rich ),I give here the Original .

I am sure one of our german friends will help for the translation .

 

[Jemiba]

" Pat.33023 from 27th April 1918, published on 7th December 1920,
Karl Tapernon, Düsseldorf :
Aircraft with two propellers, positioned for and aft of the wing,
which can be set to rotate in the same or in opposite directions.
Counterrotating, the air pressed under the wing will hold the aircraft
steadily in the air and allows taking off and landing vertically "

BTW, the short description contains several errors in language, that, to my
opinion wouldn't have been there in an official document. Maybe, it's just
a later description of the drawing, but someone who tried to figure out,
what it shows ?

 

[richard]

Thank you ,Jemiba .

In the early patents ,you can find some oddities . ;D

I have found that in the official patents diary in Flugsport 1921 .
I think ,it's the original summary for this patent .

 

[Jemiba]

"I think ,it's the original summary for this patent ."

I always thought, drinking while on job was forbidden ... ;D
But, as was pointed out in another thread here, to file a patent,
not necessarily means, that it would work !

 

[richard]

I am not really found of exotic patent too .
You are right ,it's obvious ,this proposal can't work ,but it's funny,don't it ?

 

[Jemiba]

"..it's obvious ,this proposal can't work"

Simply as an aircraft with two props it would work and maybe it
even can be useful in certain cases. This could have been
one of those inventions, which turned out to be totally different
in the end , than intended by the inventor .
The first porcelain was made in euopr by soemone, who tried to
produce gold !

 

[Tophe]

Why do you say there is a nonsense in this invention? It seems (to me) just too optimistic: reversing the pitch of a propeller or the thrust of a jet has becomen very common, it simply brakes and reduces landing distance, not providing vertical landing... No?

 

[Jemiba]

As I understand it, they wanted to blow air under the wing from both sides,
probably to form a kind of air cussion. But there wouldn't have been a steady
airflow, so I don't think, that it is a practical solution.

 

[richard]

Me too .