About this Plan
Eastwind. Free flight power model.
Quote: "Smooth simple lines mark this as a model for those liking looks and high performance. Eastwind, by Hoh Fang-Chiun.
Of the many branches of aeromodelling, the fast-climbing free-flight gas model is of particular interest to us. Starting with a pylon design, we first built several models from both kits and plans and experimented with satisfactory results. The many successful flights led us to think of designing a model of our own. Like all technical things, successful results, in this case a free-flight with constant contest-winning performance, can only be achieved through the right application of theory and steady practical experiments.
The Eastwind was designed in 1954 and has since undergone steady flight tests. During the past few years, eight Eastwinds have been built, of which six were for .09 (two lost on trim flights), one for .049 and one for .15 engines. Based on experience acquired during building and testing, changes in the design have successively been introduced to improve its performance.
With the ever increasing power which modern high-speed engines deliver, good free-flight designs must be able to utilize all the power which these mighty powerplants develop. A steep, rocket-climb followed by a slow-sinking floating glide is the pre-requisite in order to have any chance in gaining a top place in today's hot free-flight competitions. The wing air-foil is one of the keynotes in today's free-flight. A low-drag, high-lifting airfoil is most desirable. Of all the airfoils known, a thin, sharp leading-edged, flat-bottomed Clark Y type probably offers the least drag. This is important in order to gain as high an altitude as possible during the limited power flight. But, practical experiences show that an undercambered airfoil, although offering a higher drag during the climb, would permit a slower floating glide and a greater ability of catching a thermal..."
Quote: "Hoh Fang Chiun was a prolific designer in all categories and this simple design shows some of his skills."
This plan was printed in Flying Models Decade of Designs (1), published 1960.
Direct submission to Outerzone.
Update 19/01/2017: added article, thanks to RFJ.
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
Do you have a photo you'd like to submit for this page? Then email email@example.com
User commentsNo comments yet for this plan. Got something to say about this one?
Add a comment
* 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.
© Outerzone, 2011-2022.
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.