sportav8r(at)gmail.com
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 Posted: Mon Dec 08, 2008 12:39 pm Post subject: Fwd: [OhioValleyRVators] Food For Thought |
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This looked like a good idea to consider for the Z-diagram library, or at least kick around here...
-Bill B
---------- Forwarded message ----------
From: Valentine Kozak <hangar_p1(at)yahoo.com (hangar_p1(at)yahoo.com)>
Date: Mon, Dec 8, 2008 at 2:53 PM
Subject: [OhioValleyRVators] Food For Thought
To: OhioValleyRVators(at)yahoogroups.com (OhioValleyRVators(at)yahoogroups.com)
I heard of a recent incident where an RV made an off airport landing
due to a failure of an engine driven fuel pump. Maybe someone was
just "joking" around but consider the following.
If the boost pump was wired so that whenever the fuel pressure
dropped below a preset value (around 15-20 psi for fuel injected
engines) the pump would run without intervention of the pilot.
This could be accomplished by a pressure sensor in the high pressure
side of the fuel supply. A boost pump switch would have a three
position switch with "On-Off-Auto" positions. An indicator light
would be on the panel to show th pilot when the boost pump is
operating.
The pilot would have the option of selecting "On" for take off and
landing or leave the switch in "Auto" and reference the indicator
light for boost pump operation.
Suggested switch position would be "Auto" for take off, landing and
cruise. Should fuel pressure drop below limits during any one of
these operations "Auto" would turn on the boost pump without the
pilot attempting guess why the engine is not operating correctly. The
indicator light would inform the pilot of a fuel pressure problem
which makes the use of the boost pump necessary.
Just an idea to make things a little easier on the pilot.
Val Kozak
Haven't given up on the RV-8
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