Piasecki PA-97 Helistat & PA-39 Projects

[hesham]

Hi,

http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA047196&Location=U2&doc=GetTRDoc.pdf
Please note that,they wrote Report Number 97-C-1,
and again it is Model-97,this indicate sometimes
there is connection between report number and
the company model number.

 

[Stargazer]

Hi,

http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA047196&Location=U2&doc=GetTRDoc.pdf

Please note that,they wrote Report Number 97-C-1, and again it is Model-97,this indicate sometimes
there is connection between report number and the company model number.

Yeah, sometimes... :

 

[hesham]

Hi,

here is a Piasecki PA.97 4,11,34J and 212B.

https://lynceans.org/wp-content/upl...heavy-lift-helistats-converted-compressed.pdf

 

[hesham]

Hi,

In 1988, the preliminary design of "Heli-Stat II" was created with a balloon of a rigid structure to which four rotors (24 m in diameter) are attached, turned horizontally at take-off and vertically in flight. The project was not implemented.

http://www.samolotypolskie.pl/samoloty/14640/126/Piasecki-PA-97-Heli-Stat2

 

[isayyo2]

Promotional sales film from a Canadian sponsor "Mercantile Ventures" based out of Edmonton. Just posted today!

Highlights the Helistat's utility for Forestry and Mining activities in Alberta. Payload was planned to be 60-tons.

 

[hesham]

From Army Aviation 1958/12.

 

[hesham]

From Aviation magazine 1975.

 

[hesham]

From Aviation magazine 15-5-1984.

 

[Boxman]

Posted yesterday (13-Dec-2025) to YouTube by Calum, "Helistat: The $100 Million Experiment Destroyed in Seconds," regarding the Piasecki PA-97 Helistat.

 

[publiusr]

https://hackaday.com/2026/04/14/four-choppers-and-a-blimp-the-bizarre-piasecki-helistat/