Yak-15 (oz3202)

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Yak-15 (oz3202) by Ron Baddorf 1994 - plan thumbnail

About this Plan

Yak-15. Radio control scale model for electric ducted fan.

Quote: "At last, a schoolyard scale warbird, for the new micro-size electric ducted fan units. Yak 15 by Ron Baddorf.

The fun of flying your own ducted fan Yak or Mig in schoolyard scale R/C for a cost of about $100.00 is now realistic. The availability of small electric ducted fan units has finally made ducted fan scale WC practical and affordable.

The Blue Flame Blaster just released by Hi-Line, comes as a 30W motor with a 2-1/2 in diameter injection molded fan, a stator shroud assembly and nose and tail cones. The unit is purchased fully assembled and tested. The entire fan unit weighs slightly less than 2-1/2 ounces and has a rated output of 2 ounces static thrust. With a 4-cell 270 mAh battery pack and a Cox FailSafe Single Channel receiveriservo unit with BEC, the power plant and radio weight is just under 6 ounces. This gives us an allowance of about 4-5 ounces for the model's weight ready to fly. My completed Yak airframe weighed in as follows: fuselage 2.6 ounces. wing 1.8 ounces, stab/rudder .3 ounce, for a total of 4.7 ounces.

The Yak- 15 was chosen since I have had several successful Jetex powered free flight models: plus, I like the general arrangement and location of the engine. The full-scale Yak was a product of the late 1940's and was in service during the early 1950's and used sparingly during the early phases of the Korean War. The scale green and gray coloring of the Yak (plus its small schoolyard scale size) makes for an attractive R/C model.

Before we start construction, review the plans - think light, buy the balsa - think light, and clear off your workbench - think light. Think Light. This model must be built light.

Construction. Fuselage. Begin construction of the fuselage by cutting out the longitudinal keel from medium 1/16 sheet balsa. The outline of keel is noted on the plans by a series of dark triangles. Splice as required and cut out all lightening holes as shown. Remember - Think Light. Cut out all formers from 1/16 light balsa (including their lightening holes). Laminate formers F4 and F4A..."

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Yak-15 (oz3202) by Ron Baddorf 1994 - model pic

Datafile:

ScaleType:
  • Yakovlev_Yak-15 | help
    see Wikipedia | search Outerzone
    ------------
    Test link:
    search RCLibrary 3views (opens in new window)

    ScaleType: This (oz3202) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.

    If we got this right, you now have a couple of direct links (above) to 1. see the Wikipedia page, and 2. search Oz for more plans of this type. If we didn't, then see below.

    Notes:
    ScaleType is formed from the last part of the Wikipedia page address, which here is https://en.wikipedia.org/wiki/Yakovlev_Yak-15
    Wikipedia page addresses may well change over time.
    For more obscure types, there currently will be no Wiki page found. We tag these cases as ScaleType = NotFound. These will change over time.
    Corrections? Use the correction form to tell us the new/better ScaleType link we should be using. Thanks.

Yak-15 (oz3202) by Ron Baddorf 1994 - pic 003.jpg
003.jpg

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Scaling

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.

 

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