Bolkow Bo-X

[hesham]

Hi,

the Bolkow Bo-X was heavy-lift helicopter specifications of lifting payloads of approximately
20 tons,work on it was during the late of 50s and early of the 60s,it look like Bolkow Bo-70.


http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930008694_1993008694.pdf

 

[hesham]

Hi,


also that is Bolkow 50 ton flying crane helicopter project,with some
Bolkow rotors and flying jeep.


http://www.dtic.mil/dtic/tr/fulltext/u2/864891.pdf