Autogiro (oz8346)


Autogiro (oz8346) by Ed Mazan 1970 - plan thumbnail

About this Plan

Autogiro. Free flight sport model. For .049 power.

Quote: "THE AUTOGIRO WAS invented by Juan de la Cierva of Spain. Although Cierva designed numerous successful conventional aircraft, he constantly searched for means to make air travel safer. In the early days of aviation, pilot error was the most common killer, since fixed wing aircraft often stalled and crashed. Cierva finally envisioned an aircraft with a freely rotating wing which could be completely independent of speed. In 1923 the autogiro was born.

Using a conventional aircraft, Cierva replaced the fixed wings with a free-spinning rotor, mounted off the fuselage on a tripod pylon. The autogiro proved its safety characteristics. No stalls or spins marred its performance. Most important was its ability, upon engine failure, to descend almost vertically at a rate roughly comparable to that of a parachutist.

The autogiro is not a helicopter. Their only likeness is the rotor, and their flight characteristics differ greatly. Autogiro lift is accomplished by a free-floating rotating rotor not connected to engine, while forward thrust is derived from a conventional motor and propeller.

Our model autogiro is a semi-scale design based on the recent full-scale Umbaugh autogiro. The ship is made of light or medium-weight solid balsa. It requires a large fuel tank because, in still evening air, the autogiro is capable of reaching fantastic altitudes nearly overhead, yet descending only yards from the point of launching.

Constructio. Fuselage: The fuselage is carved from a unit of four separate solid balsa blocks, glued together. From 1 inch square light-weight balsa, cut to proper length Blocks 1, 2, and 3, as indicated on plans. Arrange the blocks in proper order, glue and allow a reasonable time for drying. Cut Block 4 to length from medium weight balsa..."

Direct submission to Outerzone.

Supplementary file notes



Did we get something wrong with these details about this plan (especially the datafile)? That happens sometimes. You can help us fix it.
Add a correction

Autogiro (oz8346) by Ed Mazan 1970 - model pic

  • (oz8346)
    by Ed Mazan
    from American Aircraft Modeler
    November 1970 
    22in span
    IC F/F
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 14/01/2017
    Filesize: 320KB
    Format: • PDFbitmap
    Credit*: theshadow
    Downloads: 1210

Do you have a photo you'd like to submit for this page? Then email

User comments

No comments yet for this plan. Got something to say about this one?
Add a comment



Download File(s):


* Credit field

The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.


This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.


Terms of Use

© Outerzone, 2011-2024.

All content is free to download for personal use.

For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.

Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.