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kevmor
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 Posted: Sat May 12, 2007 6:12 am Post subject: Question for Bob Gardner - Multiengine bank angle |
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I just finished reading the Jeppesen "flight discovery" series for
their Multiengine manual, and just started reading the ASA's The
Complete Multiengine pilot. I noticed in their book that they
mentioned several times that, for best performance, you don't need 5
degrees of bank that planes are tested at. It stresses to use less,
such as 2-3 deg. depending on the plane. I noticed in your book (pg.
1-5) it says "at least 5 degrees"...which is correct? I'd have to
check the Jeppesen one again, but I think they tested climb rates with
different bank angles to figure the best one. |
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Luke Skywalker
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| Posted: Sat May 12, 2007 6:12 am Post subject: Re: Question for Bob Gardner - Multiengine bank angle |
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On May 11, 10:27 pm, kevmor <kev...@gmail.com> wrote:
| Quote: | I just finished reading the Jeppesen "flight discovery" series for
their Multiengine manual, and just started reading the ASA's The
Complete Multiengine pilot. I noticed in their book that they
mentioned several times that, for best performance, you don't need 5
degrees of bank that planes are tested at. It stresses to use less,
such as 2-3 deg. depending on the plane. I noticed in your book (pg.
1-5) it says "at least 5 degrees"...which is correct? I'd have to
check the Jeppesen one again, but I think they tested climb rates with
different bank angles to figure the best one.
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I would be interested in the answer, but several years ago we did test
with a Twin Comanche and found that the "number" is 2-3 depending on
the CG. However one thing we did find when we went out of the realm
of "professional pilots" (ie flight test pilots) and into the realm of
competent but "normal levels of currency" pilots (ie multi engine
pilots who flew around 100 hours a year) that 5 degrees was a good
goal to shot for. It was easy to see on the "ADI" (attitude gyro) and
steading on that gave really good performance.
I have the numbers somewhere (it was a contract for Piper) but the
bank does make a difference the largest difference is correct
operation of the rudder (IE putting the ball in the correct
position). 100-200 fpm might not seem like much...
but
Robert |
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