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tumates(at)gmail.com
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 Posted: Fri Sep 12, 2008 9:24 am Post subject: Zenith701801-List Digest: 8 Msgs - 09/11/08 |
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Another Slat issue...
Since the slats become effective at high angles of attack, and even Zenair is using Feathers VGs on the elevator, has anyone thought of using VGs on the front of the slats to add control at shallower angle of attack while keeping the slats benefit for steeper approaches?
Anyone care to try that for the best of both worlds?
Bob Lee
On Fri, Sep 12, 2008 at 2:58 AM, Zenith701801-List Digest Server <zenith701801-list(at)matronics.com (zenith701801-list(at)matronics.com)> wrote:
[quote]*
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Online Versions of Today's List Digest Archive
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EMail Version of Today's List Digest Archive
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Zenith701801-List Digest Archive
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Total Messages Posted Thu 09/11/08: 8
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Today's Message Index:
----------------------
1. 05:22 AM - Re: Unequal fuel tank levels (Zed Smith)
2. 06:40 AM - Re: Unequal fuel tank levels (n85ae)
3. 08:16 AM - test (Dan)
4. 08:27 AM - Re: test (Ken Arnold)
5. 11:32 AM - CH701 POH (Ken Arnold)
6. 12:54 PM - Re: Shoulder Harness attachment (n85ae)
7. 02:46 PM - Re: CH701 POH (John Swanson)
8. 05:19 PM - Re: Shoulder Harness attachment (Viper_on_line)
________________________________ Message 1 _____________________________________
Time: 05:22:39 AM PST US
From: Zed Smith <zsmith3rd(at)earthlink.net (zsmith3rd(at)earthlink.net)>
Subject: Re: Unequal fuel tank levels
do not archive
Gravity-induced air leakage is the problem.
One wing, being slightly lower than the other, upsets the intended equal distribution
of fuel.
This then results in massive amounts of air getting into the higher tank.
A two-inch left-to-right tilt is nearly one-half the depth of the 701 tanks; nearly
one-half the capacity.
A wise old ag pilot once told me that the prop was just a big fan....it is there
to keep the pilot cool.
He went on to say that if the fan stops you can see the pilot sweat.
Those with unequal fuel levels may need to install an auxillary air pump to replenish
the tank with less air. This may help to keep the fan running.
Everybody have a nice day, and straighten up and fly right-hand patterns!!
Zed
________________________________ Message 2 _____________________________________
Time: 06:40:59 AM PST US
Subject: Re: Unequal fuel tank levels
From: "n85ae" <n85ae(at)yahoo.com (n85ae(at)yahoo.com)>
If you guys REALLY want to understand why the fuel level is different,
then you have to drop the simplistic view.
Go to Google and search on "fluid dynamics hydraulic head", it's not
completely simple but this is the explanation as to why the difference.
There are a great number of factors that are at play, the end result is
pressure differential across the tanks
Regards,
Jeff
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 3794#203794
________________________________ Message 3 _____________________________________
Time: 08:16:37 AM PST US
From: Dan <dwilde(at)clearwire.net (dwilde(at)clearwire.net)>
Subject: test
test
do not archive
________________________________ Message 4 _____________________________________
Time: 08:27:23 AM PST US
From: "Ken Arnold" <arno7452(at)bellsouth.net (arno7452(at)bellsouth.net)>
Subject: Re: test
good test Dan,
do not archive
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bobkat
Joined: 07 Sep 2008
Posts: 143
Location: Bismarck, ND
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| Posted: Fri Sep 12, 2008 9:52 am Post subject: Zenith701801-List Digest: 8 Msgs - 09/11/08 |
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I wondered about that, too. But then wouldn't you need to put them on the underside of the slats, or on the wing's leading edge between the slats and the wing itself??
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