Czech Early Helicopter Projects

[hesham]

Hi,


Here is an early Czech helicopter projects,from 4 designers,Novakovym,Tucek,
Formanek and Haller,the later was famous for his early light aircraft,H-8 and
H-9,his design consider a VTOL aircraft.


http://www.vrtulnik.cz/

[hesham]

From L + k 4/1976,

here is a Haller sketch for a helicopter Project.

[hesham]

And maybe that was Haller H-11 ?.

[Apophenia]

And maybe that was Haller H-11 ?.

No. Maybe Haller 'H-10' or 'H-12'?  The H-11 was OK-AZI, a parasol monoplane conversion from an Aero A-12 biplane.

http://www.secretprojects.co.uk/forum/index.php/topic,6615.msg292916.html#msg292916

[hesham]

Hi,

here is a patent for the same helicopter,designed by Formanek.

https://books.google.com.eg/books?id=rFmpUR9iLmAC&pg=PA125&dq=Formanek+helicopter&hl=ar&sa=X&ved=0ahUKEwiAgeSCmZzSAhWEAcAKHeYnC2sQ6AEIGjAA#v=onepage&q=Formanek%20helicopter&f=false

[hesham]

Hi,

here is a three Frantisek Novak's helicopters,No.1 of 1913,No.2 of 1914 and
No.3 Project.

http://www.aviastar.org/helicopters_eng/czech.html