REFLECTOR: Glide tests

[Jim Sower]

That's pretty good.  My technique will be to get up to 9k or 10k close 
to the airport, shut it down and log my sink rate.  Light it off at 1000 
or 2000, climb out and try it at a different speed.  Armed with that 
data, I can come up with a power setting with the belly board down that 
will give me the same sink rates at the same airspeeds.  I figure that 
engine out means pretty much engine out.  Idle power makes a significant 
difference in glide range and when I DO have an engine failure, I want 
good data.          

Ron Brown wrote:

> I ran some glide tests on my 173 Elite RG with Catto climb prop (66" 
> dia x70) last week.
>  
> I flew 10 miles away from an airport, climbed to 6500 feet, turned 
> around and slowed to 90 kias with engine idling (1040 rpm).  In 6:27 
> minutes, I was over the airport at 2700 feet.  This equates to 16:1 
> glide ratio, 93 kias average speed, and 590 FPM.  Not bad.  I was 
> flying solo, total weight was 1900 lbs. The return trip in the other 
> direction was slightly lower at 15.2:1.   As I understand it, best 
> glide speed for a Velocity is 90-100 kias. 
>  
> RV's on the other hand, do about 12:1
>  
> (oh and lets not get into a big discussion on prop stopped versus wind 
> milling.  If you want to see that discussion. go to last week's RV list).
>  
> Ronnie
>  
>
>------------------------------------------------------------------------
>
>_______________________________________________
>To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>
>Visit the gallery!  www.tvbf.org/gallery
>user:pw = tvbf:jamaicangoose
>Check new archives: www.tvbf.org/pipermail
>Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>