X-Virus-Scanned: clean according to Sophos on Logan.com From: "Bill Bradburry" Received: from vms173025pub.verizon.net ([206.46.173.25] verified) by logan.com (CommuniGate Pro SMTP 6.1.2) with ESMTPS id 7738846 for flyrotary@lancaironline.net; Sun, 07 Jun 2015 16:51:53 -0400 Received-SPF: pass receiver=logan.com; client-ip=206.46.173.25; envelope-from=bbradburry@verizon.net Received: from Desktop ([71.164.185.6]) by vms173025.mailsrvcs.net (Oracle Communications Messaging Server 7.0.5.32.0 64bit (built Jul 16 2014)) with ESMTPA id <0NPL004Q6DXGSW11@vms173025.mailsrvcs.net> for flyrotary@lancaironline.net; Sun, 07 Jun 2015 15:51:17 -0500 (CDT) X-CMAE-Score: 0 X-CMAE-Analysis: v=2.1 cv=Za3gTZhA c=1 sm=1 tr=0 a=20weQFHSdBTlwctzPCQ/Gw==:117 a=kUPQlYmSbg0A:10 a=o1OHuDzbAAAA:8 a=oR5dmqMzAAAA:8 a=-9mUelKeXuEA:10 a=XAFQembCKUMA:10 a=r77TgQKjGQsHNAKrUKIA:9 a=9iDbn-4jx3cA:10 a=cKsnjEOsciEA:10 a=gZbpxnkM3yUA:10 a=Ia-xEzejAAAA:8 a=f2FnKzKnIXzhoJ4bZMcA:9 a=CjuIK1q_8ugA:10 a=SSmOFEACAAAA:8 a=o3RReSW1VF6s55IeWQwA:9 a=YuvYt3R6kIcuV_Me:21 a=gKO2Hq4RSVkA:10 a=UiCQ7L4-1S4A:10 a=hTZeC7Yk6K0A:10 a=frz4AuCg-hUA:10 To: "'Rotary motors in aircraft'" References: In-reply-to: Subject: RE: [FlyRotary] Re: new operating question Date: Sun, 07 Jun 2015 15:51:20 -0500 Message-id: <914422EF166543BDB68D2365E8D2394D@Desktop> MIME-version: 1.0 Content-type: multipart/alternative; boundary="----=_NextPart_000_0000_01D0A139.CC7A0160" X-Mailer: Microsoft Office Outlook 11 Thread-index: AdChNjHTtUBW1L1LRM6ojhFAk3oE4wALPgMA X-MIMEOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01D0A139.CC7A0160 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Bobby, When water turns to steam it expands more than gasoline when it burns. Do you feel you get a power increase from the water injection greater than just the cooling of the intake charge? Do you know what the temp of your intake charge is on a hot day at 38 inches? And how much the water injection cools it? Bill _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] Sent: Sunday, June 07, 2015 10:25 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: new operating question Rich, My normal, not in a hurry settings. 38" MP / 7000 rpm for takeoff and initial climb with F/A 12.5-12.0. Cruise climb 5800 rpm 30-32" MP F/A 13.5- 12.5. Preferred cruise rpm 4800- 5200 At less than 30" MP and F/A 15.8-16.0. Full throttle. Prop rpm controls engine rpm and super charger bypass controls MP. A turbo charger and automotive waste gate would likely require throttle management during high rpm operations. Bobby Hughes Super charged Renesis with electric MT prop. (New Turbo charger and a 20B on the bench- still haven't made a decision about upgrading the RV10. ) Sent from my iPad On Jun 7, 2015, at 9:34 AM, ARGOLDMAN wrote: Greetings genlepeople of the rotary pursuasion, For those of you using variable pitch (C/S) props, an operating question that has been bugging me. Perhaps the collective wisdom of this group can set my mind at rest. In piston aircraft engines, the concept of running over squared MP vs RPM has been heavily questioned to the extent that some suggest running at full throttle all the time and controlling the power output via RPM (within reason). The thought is to, I believe, eliminate the induction restriction of the butterfly valve increasing the efficiency. Now we have a rotor spinning, a gear box gearing and a propeller propelling. Does this concept hold true for the rotaries. What are people doing in terms of setting power after take off (full throttle max RPM). My enquiring and rotating mind wants to know. (Unturbocharged Renesis with RD1-c Box) Thanks Rich ------=_NextPart_000_0000_01D0A139.CC7A0160 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Bobby,

 

When water turns to steam it = expands more than gasoline when it burns.  Do you feel you get a power increase = from the water injection greater than just the cooling of the intake = charge?  Do you know what the temp of your intake charge is on a hot day at 38 = inches?  And how much the water injection cools it?

 

Bill

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Sunday, June 07, = 2015 10:25 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = new operating question

 

Rich, 

My normal, not in a hurry = settings. 

 

38" MP / 7000 rpm for takeoff and initial climb with F/A 12.5-12.0. Cruise climb 5800 rpm 30-32" MP F/A 13.5- 12.5. = Preferred cruise rpm 4800- 5200 At less than 30" MP and F/A 15.8-16.0. =  Full throttle.  Prop rpm controls engine rpm and super charger bypass = controls MP. A turbo charger and automotive waste gate would likely require = throttle management during high rpm = operations. 

 

Bobby Hughes 

Super charged Renesis with electric MT = prop.

(New Turbo charger and a 20B on the bench- still haven't made a decision about upgrading the RV10. )

 



Sent from my iPad


On Jun 7, 2015, at 9:34 AM, ARGOLDMAN <flyrotary@lancaironline.net> wrote:

Greetings = genlepeople of the rotary pursuasion,

 

=

For those of you using variable = pitch (C/S) props, an operating question that has been bugging me. Perhaps the collective wisdom of this group can set my mind at = rest.

 

=

In piston aircraft engines, the = concept of running over squared  MP vs RPM has been heavily questioned = to the extent that some suggest running at full throttle all the time and = controlling the power output via RPM (within reason). The thought is to, I believe, eliminate the induction restriction of the butterfly valve increasing = the efficiency.

 

=

Now we have a rotor spinning, a = gear box gearing and a propeller propelling. Does this concept hold true for the rotaries. What are people doing in terms of setting power after take off = (full throttle max RPM).

 

=

My enquiring and rotating mind = wants to know. 

 

=

(Unturbocharged Renesis with RD1-c = Box)

 

=

Thanks

=

 

=

Rich

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