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/threads/competition-of-the-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 ?,

Luminati Creates Vertically Integrated VTOL Development Business

Daniel Preston has acquired a number of key intellectual property rights, licences and manufacturing capabilities, leveraged

evtol.news

 

[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.

Flying Magazine

books.google.com.eg

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Here are captures of the Gyrodyne page on my as-yet unpublished website: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.