Mark,
If you are doing landings from abreast the numbers with a big slip,
you might make it with a dead engine. Did my landings the same way in
the Mustang. When the engine quit for real, it amazed me how fast it
came down with a prop stopped. Bobby
> Larry Flesner wrote:
>
>> I went for a short flight after work today and was going to check my
>> speed
>> brake for you...
>
> I did that test for real today, since it was a calm day and I had lots of
> time. Reality is closer to a 50% faster descent rate with flaps than
> without, if you can believe what I did today. I'm not sure I do, but it
> wouldn't surprise me either. Most of what I did today was good
> old-fashioned stopwatch and altimeter work, verified later by the EIS
> altitude/time/speed/RPM record (the 26 data points per second information
> that was used to create the plot at
> http://home.hiwaay.net/~langford/flights/flight98.gif ).
>
> I got my new replacement Sensenich 54x54 prop yesterday, so I also did
> some
> more extensive speed and climb testing with the Sterba so I can compare
> them
> after I put the Sensenich back on. I'm pretty confident with the 162 mph
> true airspeed at 7500', which is what you'd call "cruise", I guess. This
> is
> based on several 4-way GPS runs. Not bad considering I have no spinner,
> wheelpants, or lots of other things that will further reduce drag later.
>
> One thing I did test pretty carefully was glide ratio. Bottom line from
> 8000' to 6000' is that I got 16.0:1 at 97 mph, which makes me feel pretty
> good, considering how draggy my plane is at this point. That's an average
> of 533'/min, so that tells me that I can climb out of the airport and
> probably make it back if the engine croaks on climbout, since my climb
> rate
> is an average of 750'/min from 800' to 5800' with full fuel at 90 mph IAS
> (which is very close to TAS at low altitudes).
>
> Why am I doing all this testing knowing that it'll all be "wrong" after I
> add wheelpants, etc.? Because I want to know how much difference each
> improvement makes to the KR, so I'll know what I'm talking about when I
> answer these questions
>
> I also worked on making my landings "power off" (idle, anyway) from abeam
> the numbers to touchdown. This way if the engine quits I'll make it
> anyway.
> I had to do several "maxed out" slips to get it down on the numbers, but
> that was fun too.
>
> Since it's going to be warm but gusty tomorrow, maybe I'll start doing a
> little body work, and clean up some of this drag...and also add a blast
> tube
> to my Ellison's pressure regulator cover.
>
>> 198 hours at shutdown this evening with Langford gaining fast !!!!!
>
> I did 2.3 hours today, so I'm now up to 158...
>
> Mark Langford, Harvest, AL
> see homebuilt airplane at http://www.N56ML.com
> email to N56ML "at" hiwaay.net
>
>
>
>
> _______________________________________
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>
