About this Plan
Ascender. General purpose thermal soarer model.
Quote: "Interest in 'flat field' soaring certainly seems to be on the increase, judging by entries in this year's main events. And judging, too, by the number of enquiries coming in about Hi-start launching, kit models - and thermal soarer plans.
As we have only one of the latter in our range to date, I thought I would make a 100 per cent increase by adding my own model, which seems to be a reasonable sort of tow-line glider (albeit originally a 'bitsa') and while doing nothing outstanding has managed to put up a fairly respectable and consistent performance.
Ascender tows up very well on the line (so I'm told, by those who have done all the towing - I just stand still and steer it up!) and managed to place sixth in the 1970 South Midland Area Championships, out of 29 entries, with its first three flights...
The aerofoil section is Gottingen 532, which worked very satisfactorily on my first r/c glider. Silent Knight (1963), and the polyhedral also seemed a good idea. The huge rudder is (hadn't you guessed?) borrowed from the Soarcerer (oz8762) where it has amply proved my point about 1/3 fin and 2/3 rudder being the best proportion for use in all conditions, with proportional control..."
Ascender, Radio Modeller, October 1970.
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 email@example.com
User commentsI built this model for 'bang-bang' single channel in 1971. It was my first attempt at slope soaring, about which I knew next to nothing. The subsequent learning curve was very steep. Before my first flight I did not see how it could stay up, but by the end of the flight I discovered the real problem was getting it back down. Eventually the wings broke flying heavily ballasted in a gale over sea cliffs where the sudden changes in vertical wind speed proved too much. A decision was then made to build a proportional kit as I was bored with the limitations of single channel after 10 years. The kit cost £70.00 which was a fortune in 1971 and the build was fiddly, the servos being particularly difficult with all discrete components, but it worked for many years.
Fergus Foster - 23/05/2019
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.