Radio Controlled Soaring Digest September 1994 Issue
Issue Contents:
Mid South Soaring Championships in Memphis was a very friendly event with
A releasable towhook for aero-towing is shown. This is based on a loopon the end of the lowline being released from a pin which is pulled out.
NASSA news
Australian Scale Soaring Weekend (Aug 94) coverage. Models were aerotowed with tug model having Xenoha G62 engine. Two large scale models shown.
Swept forward and backward wings are discussed with some reasons for each and the consequences of each from John Rapillo’s articles in Model Builder
Cont. Building Board Specs (+/- 1/32) Hollow core door recommended. Cover with cork and place on a work bench
Guidelines are given to achieving good results when constructing a model. Topics: Symmetry
Night Hawk
A simple wind tunnel demonstration setup is shown where one can evaluate wings in a simple setup made with a fan and other simple devices.
Pt 2 of Raptor 135 design deals with evaluating the performance using Airfoil-ii and spreadsheets. Math relationships given for other’s use.
Novel actuator connects servo to surface w/o protrusions into air flow.Uses telescoping tubes and pivot on servo wheel.
Cont. For planes up to 35 oz. use 2 4-40 or 6-32 nylon bolts. HLG bolt size should be 4-40. Installation instructions. Use shot for ballast.
Ways to limit damage to models: Very light and small
Martin Simon’s “The World’s Vintage Sailplane” has been an excellent source of 3 view drawings which have been blown up for construction.
A list of airfoil sources obtained from InterNet is given. 16 texts and11 misc. publications. Coordinates and Polars
Diagram and description of spring loaded finger hole cover for HLG.
RX-1 launches to 300′ with catapult. 36″ wingspan
Too much stick movement causes model to come down faster than desired in contests.
Jerry describes making a plug for molding fiberglass fuselages that he markets (Viking Models).
Photographs of World Soaring Jamboree soaring events and the participants.
Radio Controlled Soaring Digest Septemer 1994 Issue
