September Meeting Minutes - Andy Karmy

Tom called the meeting to order
Tonight the program is about Micro VGs With Anni Brogan and Charles White


Visitors
Paul Orville - working on a Glasair


Treasurer report
Checking $3539.18
Savings $393.33


Tools, We have em, surely you need em. Joe Andre is our Tool Custodian and would be happy to talk with you about borrowing any of them for your project needs. We have a large collection of new stuff that Pat Brick donated to the chapter so be sure and check with Joe.


Darin Anderson - Newsletter. Are you reading it, should we continue with the current format? OR, should we consider moving to a new method to distribute the news. Also, we have members that have not flown, could we consider building a way to match them up with those that are flying when you have a free seat?


TeenFlight Puyallup is starting a new RV-12 build this year. They
are looking for 20 kids to join the program this fall for this coming school year. If you know of any high school aged kids that might be interested in the program please send them to Kevin Behrent. The build sessions are Sunday and Monday evenings from 5:00 - 7:30 pm. We are looking for volunteers as both building mentors and just extra hands at the sessions to help out.


Micro AeroDynamics Micro VGs
August 1987 was the first VG kit that they sold. The target was to get a 10kts stall speed reduction on small GA planes. Overall the target is 8%-10% reduction in stall speed. They got the idea from some Boeing engineers that were using them on the 767 to solve some aerodynamic issues at high speed.

VGs come in 2 sizes. 1 inch and 1.5 inch. They are bent to match the airfoil shape to easily attach to the wing.

The basic idea is to swirl the air going over the wing airfoil which allows the air to stay attached at high angle of attack flight. This allow the stall speed to be reduced as the flow separation is delayed to a slower speed. They also work on the horizontal and vertical tail as well. With them in front of control surfaces they increase control authority.
http://www.microaero.com/