Mailing List flyrotary@lancaironline.net Message #49923
From: Bill Bradburry <bbradburry@bellsouth.net>
Subject: RE: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis to turbo
Date: Tue, 9 Feb 2010 15:20:07 -0500
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>

Ok, so velocity cubed… what is “C”?

 

Nope!  Not simple enough for some of us!  :>) 

 

Bill B

 


From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of MONTY ROBERTS
Sent: Tuesday, February 09, 2010 1:20 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis to turbo

Hp = C*V^3

 

Is that simple enough? ;-)

 

Monty

----- Original Message -----

From: Al Gietzen

Sent: Tuesday, February 09, 2010 12:10 PM

Subject: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis to turbo

 

Ed wrote:

The new set up gave a noticeable benefit in take off performance (and I do

mean noticeable).  However, the top end was relatively unaffected - although

I did measure an approx 4 mph increase in top aircraft speed.

 

OK; Ed – given your expertise on technical explanations, I’d like your take on why your increased hp resulting from the increased RPM is not giving you higher top end speed.  Is it exhaust back pressure or less than optimum prop, or other?

 

Al



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