About this Plan
Satyr - Towline glider. Note this plan is at 50% of fullsize, but shows the ribs and formers at 100%.
Quote: "Satyr was designed as a small sailplane model, simple enough to be used as 'the beginners first contest model' yet capable of a useful performance. The small tailplane on a long lever-arm gives excellent stability and the sturdy construction makes the fuselage capable of standing up to any rough treatment - except a careless foot! Of the four prototypes built, three came out below the minimum FAI weight of 11-1/4 oz - the heavy one being the designer's! - so do not spare cement and reinforcement where it serves a good purpose.
Fuselage. First cut plan shape from 1/16 in sheet, glue longerons along the edges and fit bulkheads and top longerons. Next mount the vertical sides from former 1 to 6. Finally put on the decking, but don't forget to fix the hardwood dowels while the fuselage is still open. Decking can be left well oversize and trimmed after cement has set. Use plenty of pins to keep sheet in place where it has to be forced into a bend.
The nose block is made of three layers of hardwood, total width about 1.2 in; the centre one being hollowed out to take trimming ballast. Nose block is glued straight on to former 1. Fit fin when model is nearly complete so that you can check for true alignment and rigging relative to wing.
Wing. This is quite a simple constant-chord structure and all ribs are 1/16 in balsa: Build it in three sections which are later joined by the dihedral braces. I found joining very easy when I glued one brace to the spar on the outer section and the other on the inner section it gives more support when joining up the sections and less danger of finding insufficient dihedral after cement has set.
The constructional method used in building the wing has been described in the May 1950 issue of Model Aircraft. Briefly, it consists in first cementing main spar and leading edge to the nose sheeting; taking good care that the distance between the two is just right to cover the nose portion of the ribs. When the spars are well in place cement the ribs to the main-spar and a short length of the sheeting. When set, pull the sheeting over the ribs and cement with plenty of pins to keep the parts in position. Take care to line up the tails of the ribs..."
Update 19/08/2018: added article, thanks to RFJ.
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