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From: <cardmarc@charter.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: IAS and Vne! Whoa!
Date: Wed, 5 Jan 2005 13:18:26 +0000
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The Rocky Mtn umonitor also does true airspeed, and Mach number for those of your with very fast airplanes. I have one that I used a while. It is really a flight data computer of sorts!
Marc Wiese
> 
> From: "Marvin Kaye" <marv@lancaironline.net>
> Date: 2005/01/04 Tue PM 04:05:03 GMT
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Subject: [FlyRotary] Re: IAS and Vne! Whoa!
> 
> 
> "Ed Anderson" <eanderson@carolina.rr.com> wrote:
> 
> """
>   The bottom line is that at the higher altitudes your indicated airspeed 
> gauge
> can be showing you safely below the Red Vne mark but, your True Airspeed may
> be exceeding Vne by a considerably margin putting your airframe in a
> potentially danger zone of flutter.
> """
> 
> The Lancair IVPs, being designed for turbocharged flight, spend most of their 
> cruise time in the flight levels.  Vne for that aircraft is mach .52... the 
> Cheltons (and other glass cockpits, I imagine) have the ability to monitor 
> that speed directly, and Vne is adjusted and displayed based on altitude, OAT, 
> etc (ie, TAS).  The Vne parameter is entered as a mach number in the Chelton's 
> setup mode.  Pretty amazing stuff.
> 
>    <Marv>
> 
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