X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail.fdic.gov ([167.176.6.5] verified) by logan.com (CommuniGate Pro SMTP 5.2.13) with ESMTPS id 3564469 for flyrotary@lancaironline.net; Mon, 30 Mar 2009 12:08:42 -0400 Received-SPF: pass receiver=logan.com; client-ip=167.176.6.5; envelope-from=brogers@fdic.gov X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C9B151.AC680D9C" Subject: RE: [FlyRotary] Re: Video of First Flight - Mustang II w/ 13B Rotary Engine Date: Mon, 30 Mar 2009 11:07:43 -0500 Message-ID: <1F44A251F397E444B05E240B8688AB79026000C3@DALEXC100P.PROD.FDIC.GOV> In-Reply-To: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: Video of First Flight - Mustang II w/ 13B Rotary Engine Thread-Index: AcmxRHJxPTvEtGZoT8u5+fFyTybzEQACkdVw References: From: "Rogers, Bob J." To: "Rotary motors in aircraft" Return-Path: BRogers@FDIC.gov X-OriginalArrivalTime: 30 Mar 2009 16:07:52.0577 (UTC) FILETIME=[ADF54710:01C9B151] This is a multi-part message in MIME format. ------_=_NextPart_001_01C9B151.AC680D9C Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Ed, =20 On takeoff, the turbo engine was producing 38 inches of manifold pressure and I still had 1/3 of my throttle left. Because I have an aggressively pitched prop (68x 84), I think there was a little blade stall until I got more speed. I climbed out at 120 mph and over 1,000 fpm. I did not feel any "P" effect, but I may have been too excited to notice. The controls are well balanced and the plane will stay wherever you point it, hands off. My only problem so far is that the right wing stalls first and causes a sharp wing drop. The published fix is to make the outer leading edge more rounded on the right wing. After some re-shaping, the stall was much improved on the second flight, but I still need to do a little more work on the right wing to get it to stall at the same time as the left wing. =20 The nose is longer than usual. I moved the seats back some and added additional baggage space behind the seats, which called for more weight on the nose. Based on my original W&B estimates, that is where the engine should have been placed. It gave me enough room to place the radiator and oil cooler between the engine and firewall. As it turned out, the plane was slightly nose heavy with the battery on the firewall, so I repositioned the battery in the tail. Now the W&B is perfect. As a bonus, the battery is out of the engine compartment where it would have gotten a lot of heat and there is more room on the firewall for cooling air to exit. So far, I have been able to idle on the ground for over 25 minutes without any overheating. My cowl flap can be opened wide or closed to adjust for temperature needs. Even on climb out, the engine barely got up to operating temp (180 degrees) with the cowl flap half open. Yesterday, on the second flight, I closed the cowl flap completely and ran the engine up to about 32 inches of manifold pressure and got 190 on water temp after about five minutes. Speed was only 170 mph (4800 rpm) at 3,500 feet and OAT was 55 degrees F. When it gets hot during the summer months, cooling may be marginal at high power settings. With the turbo, I should be able to fly at higher altitudes where it is cooler and I can go faster. Time will tell. Right now, I am happy just to be flying instead of building. =20 Bob =20 =20 ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson Sent: Monday, March 30, 2009 9:32 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Video of First Flight - Mustang II w/ 13B Rotary Engine =20 Great looking flight, Bob!! =20 Looks like you took off less than WOT during initial roll and then applied more power near/after lift off based on the sound track I heard. I presume appreciable "P" effect? Let us know what the numbers look like on your next flights - temps as well as performance. =20 Great to see a project get airborne, congratulations again!! =20 Best Regards =20 Ed =20 Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com =20 http://www.dmack.net/mazda/index.html =20 http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW =20 http://www.rotaryaviation.com/Rotorhead%20Truth.htm =20 ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Rogers, Bob J. Sent: Monday, March 30, 2009 10:13 AM To: Rotary motors in aircraft Subject: [FlyRotary] Video of First Flight - Mustang II w/ 13B Rotary Engine =20 =20 If you are interested, there is a video of my first flight at this link. http://www.eaa1246.org/videodisplay.asp?id=3D36 =20 I have a lot of good friends who helped me make the event a success. They took pictures and video and were there to support me. =20 I did my second flight yesterday and all went well. The landing was much better. =20 =20 Bob =20 __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ------_=_NextPart_001_01C9B151.AC680D9C Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Ed,

 

On takeoff, the turbo engine was = producing 38 inches of manifold pressure and I still had 1/3 of my throttle = left.  Because I have an aggressively = pitched prop (68x 84), I think there was a little blade stall until I got more = speed.  I climbed out at 120 mph and = over 1,000 fpm.  I did not feel any = “P” effect, but I may have been too excited to notice.  The controls are well balanced = and the plane will stay wherever you point it, hands off.  My only problem so far is that = the right wing stalls first and causes a sharp wing drop.  The published fix is to make = the outer leading edge more rounded on the right wing.  After some re-shaping, the = stall was much improved on the second flight, but I still need to do a little more = work on the right wing to get it to stall at the same time as the left = wing.

 

The nose is longer than usual. I = moved the seats back some and added additional baggage space behind the seats, = which called for more weight on the nose.  Based on my original W&B estimates, that is where the engine = should have been placed.  It gave = me enough room to place the radiator and oil cooler between the engine and = firewall.   As it turned out, the = plane was slightly nose heavy with the battery on the firewall, so I repositioned = the battery in the tail.  Now = the W&B is perfect. As a bonus, the battery is out of the engine compartment where it would have gotten a lot of heat and there is more = room on the firewall for cooling air to exit.  So far, I have been able to idle on the ground for over 25 = minutes without any overheating.  = My cowl flap can be opened wide or closed to adjust for temperature needs.  Even on climb out, the engine = barely got up to operating temp (180 degrees) with the cowl flap half open.  Yesterday, on the second = flight, I closed the cowl flap completely and ran the engine up to about 32 inches = of manifold pressure and got 190 on water temp after about five = minutes.  Speed was only 170 mph (4800 = rpm) at 3,500 feet and OAT was 55 degrees F.  When it gets hot during the summer months, cooling may be = marginal at high power settings.  With = the turbo, I should be able to fly at higher altitudes where it is cooler = and I can go faster.  Time will = tell.  Right now, I am happy just to = be flying instead of building.

 

Bob

 

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson
Sent: Monday, March 30, = 2009 9:32 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Video of First Flight - Mustang II w/ 13B Rotary = Engine

 

Great looking flight, = Bob!!

 

Looks like you took off less than = WOT during initial roll and then applied more power near/after lift off = based on the sound track I heard.  I presume appreciable “P” effect?  Let us know what the numbers look like on your next = flights – temps as well as performance.

 

Great to see a project get = airborne, congratulations again!!

 

Best = Regards

 

Ed

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Rogers, Bob = J.
Sent: Monday, March 30, = 2009 10:13 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] = Video of First Flight - Mustang II w/ 13B Rotary = Engine

 

 

If you are interested, there is a video of my first = flight at this link.  http://www.eaa12= 46.org/videodisplay.asp?id=3D36

 

I have a lot of good friends who helped me make the = event a success.  They took pictures and video and were there to support = me.

 

I did my second flight yesterday and all went = well.  The landing was much better.

 

 

Bob

 



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