Jersey Javelin - Free flight gas model.
Quote: "The final proof of any contest model rests on the results achieved by builders other than the designer. Members of our club, the Strato-Bums, range in age from 13 to 19 years, and every one has built and flown this model successfully. As a matter of fact, each of the gang has won and placed at a contest, at one time or another. These contests range front local to the Eastern States and the Nationals. The latest was George Stumpf, age 15, who won the class A event at the Sky-Lancers contest in 1943; he also had the high single-flight time of the day. When the first Javelin was designed, back in 1939, there was no provision stipulating the size or type of landing gear necessary for gas models. Immediately, the thought arose that a skid would eliminate 90% of the landing gear drag, reducing the over-all parasitic at least 35% and thereby automatically increasing the efficiency of the model.
The use of a skid necessitated the design of an unconventional model, as we then knew them. Force arrangements, plus the economy factor in regard to props, required a high thrust line. This then dismissed the possibility of a cabane or a pylon, as I didn't care to go too far astray from conventional theory or type. The real departure was in the use of my pet theory: Remove the stab from the turbulence created by the prop wash and the downwash from the wing. This permitted the use of a stab having only 1/3 of the total wing area, reduced the induced drag, and still maintained longitudinal control of the model.
The stab was placed at the base of the fuselage, a good 6 inches below the thrust line and almost 9 inches below the chord line of the wing. Dihedral and twin rudders were used in the original stab. The rudders were to act only as skids to maintain vertical balance while standing or landing. The dihedral was substituted for the vertical fin. The directional stability was excellent; the plane had a very shallow turn without any extreme banking tendencies, and the model achieved a tremendous climbing turn without standing on its nose..."
Note this is a low resolution plan. If anyone out there has a good high res scan of this plan, it would be much appreciated.
Update 16/03/2018: added additional article (Model Planes Annual 1949), thanks to RFJ.
Air Trails article.
Model Planes article.
Did we get something wrong with this plan? That happens sometimes. Help us make a correction
* 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, 2011-2018.
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.