Today's Message Index:
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1. 10:14 AM - True air speeds at 65% power (TeamGrumman@AOL.COM)
2. 11:37 AM - Re: True air speeds at 65% power (Rick Pollack)
Message 1
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| Subject: | True air speeds at 65% power |
--> TeamGrumman-List message posted by: TeamGrumman@aol.com
just for sh*ts and grins ... now, normally, I only fly at full power.
However,
I was flying back to Auburn yesterday at 6500 feet and was wondering how fast
I'd be going at 65% power. So, throttle back, mixture, stablize at 6500
feet, here is what I wrote down for speeds.
65% power
6500 feet
2525 to 2535 rpm
8.7 to 9.7 gal/hr
49 OAT
122-125 knots indicated
GPS shows 135-136
True air speed calcs at 136-138 knots
so, I flew that until I was about 80 miles from Auburn and then descended to
4500 feet. I set up again for the same conditions.
65% power
4500 feet
2500 to 2530 rpm
9.2 to 9.7 gal/hr
52 OAT
125-129 knots indicated
GPS shows 138-142
True air speed calcs at 137-139 knots
MAP 21.2 to 21.5
So, I'm pretty happy with it.
Gary
Message 2
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| Subject: | Re: True air speeds at 65% power |
--> TeamGrumman-List message posted by: "Rick Pollack" <rdp123@verizon.net>
Gary, how does your 65" prop do on climb out.? Are you noticing any significant
loss?
Rick
----- Original Message -----
From: TeamGrumman@AOL.COM
To: teamgrumman-list@matronics.com
Sent: Wednesday, April 13, 2005 10:13 AM
Subject: TeamGrumman-List: True air speeds at 65% power
--> TeamGrumman-List message posted by: TeamGrumman@aol.com
just for sh*ts and grins ... now, normally, I only fly at full power.
However,
I was flying back to Auburn yesterday at 6500 feet and was wondering how fast
I'd be going at 65% power. So, throttle back, mixture, stablize at 6500
feet, here is what I wrote down for speeds.
65% power
6500 feet
2525 to 2535 rpm
8.7 to 9.7 gal/hr
49 OAT
122-125 knots indicated
GPS shows 135-136
True air speed calcs at 136-138 knots
so, I flew that until I was about 80 miles from Auburn and then descended to
4500 feet. I set up again for the same conditions.
65% power
4500 feet
2500 to 2530 rpm
9.2 to 9.7 gal/hr
52 OAT
125-129 knots indicated
GPS shows 138-142
True air speed calcs at 137-139 knots
MAP 21.2 to 21.5
So, I'm pretty happy with it.
Gary
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