Tuesday, March 29, 2011
Monday, March 14, 2011
Friday, March 04, 2011
Thursday, February 24, 2011
Indoor Catapult Glider Competition
Indoor Catapult Launched Glider Competition John Monk
This event is the 2 nd indoor challenge hosted by the Society, and this time it was held at the Swartkops Airforce Base in Hangar 14 on 22 nd October 2010.
It was decided that the format for this event would be a challenge involving endurance only and competitors were allowed to use bungee catapults to launch their gliders. This meant that the gliders all had to be able to withstand the launch forces and the initial high speed aerodynamics before getting to “Top of Climb” and settling into a slow spiral flight down to the ground. Obviously those designs that had the best balance in both these flight regimes ruled the day. Then of course having to avoid the roof trusses and the side walls as well. Needle ss to say, everybody had to do plenty of practicing to set their trims and CG position. The Glider Competitors . Read more here,(pdf).
This is an extract from the Jan 2011 issue of the AeSSA News letter and is published with the permission of the AeSSA,
2011 Inter Varsity Flight Competition
Inter-Varsity Flight Competition
Barbara Barbeiri
On the 19th of November 2010, the University of Pretoria and the University of Witwatersrand competed in the first annual inter-varsity flight competition. The competition took place in the Meerkat Field opposite Aerosud.
Aeronautical Engineering students from both Universities built their own model aircraft and competed in four events, each with its own challenges. Read more here (pdf)
This is an extract from the Jan 2011 AeSSA news letter and is published with the permission of the AeSSA
Wednesday, February 23, 2011
Basic performance calculator for gliders -- Michael van Jaarsveld
I am Michael van Jaarsveld, an avid model aircraft designer of gliders. I have created an XL spreadsheet that calculates the basic performance for gliders. I used the book Model Aircraft Aerodynamics Fourth edition by Martin Simons (published by Nexus special interests) as reference. It also includes some wing profile wind tunnel test results.
Download the spreadsheet here.
More on using the spreadsheets here.
Easy answer spreadsheet here.
Tuesday, February 22, 2011
MAASA 2011 Nationals at Emoyeni Aviation Park, KwaZulu-Natal -- Colin Addis
Entry form and comp details (word DOC)
Local accommodation
Map for main flying field
Map for alternate practice field 1
map for alternate practice field 2.
Click on the maps for a larger image.
Local accommodation
Map for main flying field
Map for alternate practice field 1
map for alternate practice field 2.
Click on the maps for a larger image.
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