Re: [COUPERS-TECH] Attitude Indicators - SCAN

[Dr. R. B.]

The only problem I can see with using a VVI as a pitch indicator is its lag time in event reporting and its reactivity to the slightest up/down motion. You can chase your VVI on a good day and end up turning your "straight and level" course into a series of small up-and-down undulations. Of course, if you're a VFR jock with everything the Good Lord provided you except an horizon...then you use whatever you got!       I agree with Taylor, who in Instrument Flying, suggests that - assuming you enter the cloud straight and level in perfect pitch-trim -  flying through it hands-in-lap, using power to control pitch and rudders to control turn.  Of course, it takes the chungs of an elephant or their female genitalian equvalent to actually do this. If you ever do, please let me know.    Robert Beeman  ----- Original Message ----- From: Donald Bowen To: tech@ercoupers.com Sent: Saturday, April 16, 2005 11:13 AM Subject: [COUPERS-TECH] Attitude Indicators - SCAN ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- Not too long ago, on an daytime IFR flight in my previous airplane, I was completely "in the soup", in a heavy rainstorm. Then, my attitude indicator showed me to start a steepening right, decending turn.  In fact, I had experienced a vacuum system failure. Quickly directing my scan to the vertical speed indicator, the turn coordinator and the magnetic compass confirmed the vac pump failure, as did the tiny vac pressure gage. I, personally, do not agree with using the attitude indicator as a primary pitch indication, even if the vacuum system is not malfunctioning.  A nose-up pitch indication normally indicates a climb, "normally", but not always. The identical nose up pitch indication could be displayed in a power off stall, or in a low power cruise. The vertical speed indicator will give a better pitch indication in all cases.     don bowen [EMAIL PROTECTED]   ============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/ No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.9.13 - Release Date: 4/16/2005

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