Gyrodyne Helicopter Projects

[hesham]

And we also have this model to identify:

Definitely it was from 60s series,because GCA-63 and GCA-66 were appeared
in around this date (late 1950s and early 1960s).

We must to ID those two Models.

 

[hesham]

This model is pretty identical to the Model 33 above with some skin sections removed and the tailplanes rotated.

View attachment 679180
Source: Cradle of Aviation Museum

May it was GCA-66;

https://www.secretprojects.co.uk/th...e-loh-yho-4-yho-5-and-yho-6.6900/#post-160527

 

[overscan (PaulMM)]

You immediately start speculating with no evidence. Maybe it was any other unknown project.

 

[hesham]

This helicopter is based on Gyrodyne design ?,

https://evtol.news/news/luminati-creates-vertically-integrated-vtol-development-business/

 

[hesham]

From Interavia 1954

the GCA.5.

 

[hesham]

From Interavia 1954

the GCA.5.

I think that,it was a mock-up only ?.

 

[hesham]

Hi,

here is a Gyrodyne GCA.5 Helicopter Project.

https://books.google.com.eg/books?i...IWjAJ#v=onepage&q=burke wilford rotor&f=false

A more Info about it from Vertiflite 2006/1.

 

[Stargazer]

This Gyrodyne thread is indeed a mess! But it's fascinating too. A lot of stuff in there for further research.
Here are captures of the Gyrodyne page on my as-yet unpublished website:

 

[Stargazer]

The Cradle of Aviation Museum has a handful of Gyrodyne photos that are well worth adding here:

• Model 22 * coaxial rotor with pusher propeller for the US Navy
• Model 23 * single main rotor with pusher propeller for US Navy
• Model 25 Gyroliner coaxial rotor two prop engines
• Proposal model ASW configuration *
• Proposal model landing gear and weapon support structure for ASW helicopter *
• Proposal model propulsion subassembly power plant package *

NOTES:
- Designations marked (*) were infered by me from the numbers appearing on the models.
- Photos marked (*) refer to the same type, which appears to be the Model 89 CRUAS (see additional attachment) or a version thereof.

 

[hesham]

From my dears Stargazer and Boxkite,

the Gyrodyne GCA.33,it was two seat light helicopter,this project
called for two two-bladed coaxial contra-rotating rotors powered
by one 150 hp Lycoming engine,estimated speed 121 km/h and
range 193 km.

https://www.ebay.com/itm/2657399678...EYex2Nlq10p4IEAf1xdUQjhMA=|tkp:Bk9SR5jh68XyZQ

 

[hesham]

From L'Air 1952,

 

[hesham]

From Interavia 1954

the GCA.5.

Also a clearer one.

 

[hesham]

Hi,

the Gyrodyne first helicopter was GCA-3 Helidyne,notice in Flightglobal
page also the Westland W.80,W.85 & W.90 projects.
http://www.flightglobal.com/PDFArchive/View/1953/1953 - 0118.html?search=gyrodyne helicopter 1953

From JAWA 1953/54

 

[hesham]

From JAWA 1953-1954