27-09-13, 06:57 PM
This is a pic (hopefully) of a 'screen' I fabricated. It's basically a standard screen with a MRA touring screen sitting about an inch on top. The idea behind this is to encourage a cleaner laminar flow of air over the MRA screen, I have a theory that the negative pressure behind/under conventional screens causes the airflow over the screen lip to swirl -which can get bad enough to cause buffetting. This new arrangement should create a stream of air under the MRA screen and fill-in the negative pressure zone and hopefully prevent the swirl effect. If it doesn't do a good job there is plenty of scope to adjust the height/positioning to see if it makes a difference, it's early days. Once I get the height/position right I'll deal with asthetics.
[smg id=1199 type=preview align=center caption="simon screen"][smg id=1200 type=preview align=center caption="screen"]
[smg id=1199 type=preview align=center caption="simon screen"][smg id=1200 type=preview align=center caption="screen"]