Finger Vee (oz9381)
About this Plan
Finger Vee - Radio control hand launch glider. Wingspan 60in, area 361 sq in.
Quote: "This little glider has been around since 1988. It is still flown from the flat and will perform in the merest whiff on the slope. These small gliders are economical to build and fun to fly. They also have the added appeal of compactness, enabling them to be transported fully assembled in the average size saloon car. Just toss it in the back of the car, drive to the nearest flying site, switch on and away she goes.
'Finger Vee' was initially built to investigate a wing design incorporating increasing lift coefficient towards the tips, the opposite to the norm. This is achieved by progressively increasing section camber, and it gives a more favourable lift distribution along the span of the wing. To compensate for the wash-in that this incorporates a predetermined amount of geometric washout is used to level off the lift coefficient peaks. This achieves a desirable lift distribution and also controls any tip stalling tendencies. The aspect ratio is a balance between wing efficiency and turning ability, while the swept tips reduce drag at higher angles of attack by encouraging vortex shedding. There is some evidence to suggest that a small amount of tip up sweep towards the trailing edge is also advantageous in this respect.
Various wings have been built incorporating these features, but employing different structural layouts. The early wings used open structures with no leading edge sheeting, together with Warren truss rib bracing to the rear of the spar for torsional rigidity. Later wings have leading edge sheeting to form a D box with the spar. Both types can be built down to 2 to 3 ounces weight (57 to 85 grams) with care, using the 1/32in (.8mm) ply capped I beam spar shown on the plan..."
Finger Vee, Silent Flight, June/July 1992.
Direct submission to Outerzone.
Supplementary file notes
Article pages, thanks to RFJ.
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 firstname.lastname@example.org
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, 2011-2019.
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.