Reply-To: <steve@tsisp.com>
From: "Steve Brooks" <steve@tsisp.com>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Flight Data
Date: Wed, 7 Jul 2004 07:27:12 -0400
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Todd,
This is great information.  That is also incredible that you've flown that
much in 4 days.  I've been out of town over the weekend, working yesterday
and today, and it has been 95 plus degrees.

Maybe tomorrow morning early, I'll get to fly depending on weather.

BTW - Are you using the stock turbo, or something different ?

Steve Brooks

 -----Original Message-----
From: 	Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]  On
Behalf Of Todd Bartrim
Sent:	Wednesday, July 07, 2004 3:20 AM
To:	Rotary motors in aircraft
Subject:	[FlyRotary] Flight Data

	So I'm thinking that if the EM2 had datalogging and somebody wrote a small
program to display it on a PC, then we could easily share that data on the
list and everybody that doesn't have one would say "oooooh, I want one too,
no I really need one", then Tracy will sell many more of them and we all win
:-) Sounds good right Tracy?

	In the meantime I will manually enter some data that I scrawled down while
flying again today (13.4 hours in 4 days)
	The first one is dual pilot from Sunday's flight, while the others are
single pilot, 3/4 fuel, and all data is from either the EM2 or Dynon. The
EM2 has not been calibrated for fuel flow yet but I think it is reading ~5%
high. The % power and HP figures are directly from the EM2 and are dependant
on fuel flow reading, so don't take them too seriously. I was trying to
determine cruise efficiency at various power settings here.

60% power
15000 ASL
28.5" MAP
5500 RPM
112 HP
148 KTAS
0 VSI

55% power (cruise climb)
10800 ASL
27.1"MAP
5500 RPM
10.3 GPH
16.2 MPG
140 KTAS
+150 VSI

55% power
11200 ASL
27" MAP
5600 RPM
10.1 GPH
16.5 MPG
145 KTAS
0 VSI

50% power
10500 ASL
25" MAP
5100 RPM
8.5 GPH
18.5 MPG
133 KTAS
0 VSI

40% power
9400 ASL
25" MAP
4800 RPM
7.5 GPH
18.7 MPG
122 KTAS
0 VSI


Climb rates with 2 pilots aboard, ~3/4 fuel @~10000 ASL

80-90 mph = 1500' per min
110 mph = 100' per min
120-130 mph = 700' per min

Climb rate with single pilot, ~3/4 fuel from 2200' up to 5500' ASL
90 mph = 2500 ' per min


I'll get more climb data on the next flight. While I'm not displeased about
these numbers I was hoping for a little better, but I still have a long ways
to go with everything. I think my prop could be holding me back a little. I
do like the constant speed IVO but would like to try the deep pitch blades,
however before I spring for those I'll likely either trim the blades a
little (76") or reprofile them as Dave Atkins has. In the meantime I'm just
extremely happy to flying with the engine running great and without that
damn header tank.

I'll still get around to describing my new fuel system in more detail as was
asked, but right now I have to call it a night. If the weather holds I'll be
flying again after work tomorrow so I might not answer then either:-)

Todd Bartrim	(32.2 hours total)

RV9Endurance
13B Turbo Rotary
C-FSTB
             "The world will always have a place for those that bring hard
work and determination to the things they do."


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