Full Size Printed Peanut Scale Plans Embraer “IMPANEMA” a cropduster especially well suited to novice builders.
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This listing is for Full Size Printed Plans
South America provides the subject for this Peanut, a cropduster especially well suited to novice builders.
One Full size Printed plan on an 11” x 17” sheet
Six Pages of notes and photos
By WALT MOONEY
The state-of-the-art today in agricultural aircraft design is well known. It is a low-wing, highly-powered airplane with its dust or spray cargo carried over the wing, and its pilot cockpit located behind the cargo for impact safety. To provide the necessary good visibility for low altitude crop dusting, a 3600 visibility canopy is provided, and the long nose is angled sharply down to provide as much view forward, as possible. The Embraer Impanema, built in Brazil, has all these characteristics, and at the same time has a unity of shapes that render it quite attractive. Especially if it is compared with some other aircraft designs of the same genre, whose designers have apparently felt their aeronautical masterpieces should look like a piece of farm equipment; a Fordson tractor, perhaps. From a strictly Peanut modeling point of view, the Impanema has much to offer. It has a relatively long nose, non- tapered wings and horizontal tail, adequate dihedral and tail size, and a flat-sided fuselage. Although its aspect ratio is fairly high, so that a 13-inch Peanut cannot match a Fike for wing area, it is a very clean design aerodynamically and can be made a competitor with enough attention to keeping it light.
The plans are drawn for the use of 1/16 structure in most instances. This should be an aid to the novice builder. Thinner sticks could be used everywhere, and if you feel competent with the weaker wood sizes you'll certainly get a lighter model than the one in the photos, which weighs nine grams with a twelve-inch oop of 3/32 rubber.
This model utilizes conventional construction techniques in all of its components. There is nothing new for anyone who has built a few kits. However, because I believe it is a suitable model for a relative beginner