Re: KR> Cowling Cooling Air design

2017-02-26 Thread Sid Wood via KRnet
Joe, The cooling air exit needs to be pointed aft like a jet engine exhaust. Blast to the rear, not down. Sorry if my semantics have created any confusion. Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA -- From: "Joe. E. Wallace" Enjoyed your comments on air

Re: KR> Cowling Cooling Air design

2017-02-25 Thread Paul & Karen Smith via KRnet
Here is my experimentation into this very issue. http://kr2spacemodulator.blogspot.com.au/search/label/KR2S-02%20Fuselage Basically a thrust augmentation/extraction system. As I am not flying yet I can't give you any results. Paul. Brisbane, Australia -Original Message- From: Sid Wood vi

Re: KR> Cowling Cooling Air design

2017-02-25 Thread Joe. E. Wallace via KRnet
Sid Wood Enjoyed your comments on air movement and if I understand your comment < abetter scheme is to make a rear facing ramp to get the air flowing smoothly toward the exit with the exit cut off square with the slip stream.>>> would mean that the cut off of the discharge is 90 d

Re: KR> Cowling Cooling Air design

2017-02-25 Thread Sid Wood via KRnet
Pete, The idea for the larger opening size is to accommodate the increased air volume due to engine heating. However, the exit methodology is particularly critical to the overall efficiency for getting the cooling air overboard and back into the airstream. Simply cutting a big hole in the bottom

KR> Cowling Cooling Air design

2017-02-24 Thread Pete Klapp via KRnet
Netters I working on the lower half of my cowling and need to know the multiplier to size the exit area. I vaguely remember that the exit area should be approx. 1.5 times the total size of the inlet area. Need to qualify that memory. I have Tony Bingelis' "Firewal Forward" book, but can't find