A very basic question

"Hilton" wrote in
ink.net:

Andrew Sarangan wrote:

Sure, but that still does not explain why the airplane turns. A
horizontal component of lift will make the airplane side-slip, not
turn. It is the stability (weathervane effect) that makes the
airplane turn.

By definition, the 'weathervane effect' occurs because air exerts more
pressure on one side of the object (aircraft) than the other - same
definition as slipping. Therefore, are you are asserting that an
aircraft turns because it is slipping? More over, it will only turn
if it is slipping?

Hilton




Think of the space shuttle. If you fire rockets horizontal to the flight
path, the shuttle will slide sideways. It will not turn the nose towards
the direction of travel. An airplane turns because it wants to point the
nose into the relative wind.

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Andrew,

Andrew Sarangan wrote:
Hilton wrote:

Andrew Sarangan wrote:

Sure, but that still does not explain why the airplane turns. A
horizontal component of lift will make the airplane side-slip, not
turn. It is the stability (weathervane effect) that makes the
airplane turn.

By definition, the 'weathervane effect' occurs because air exerts more
pressure on one side of the object (aircraft) than the other - same
definition as slipping. Therefore, are you are asserting that an
aircraft turns because it is slipping? More over, it will only turn
if it is slipping?

Hilton


Think of the space shuttle. If you fire rockets horizontal to the flight
path, the shuttle will slide sideways. It will not turn the nose towards
the direction of travel. An airplane turns because it wants to point the
nose into the relative wind.

I understand that, but you never answered my question: "Are you asserting
that an aircraft turns because it is slipping (weathervaning)?"

Hilton

Yes, my understanding is that a bank causes an airplane to slip, which
then causes it to weathervane into the wind. Why do you ask? Is there
something I am missing?



"Hilton" wrote in news:lUGjd.8614$O11.3080
@newsread3.news.pas.earthlink.net:

Andrew,

Andrew Sarangan wrote:
Hilton wrote:

Andrew Sarangan wrote:

Sure, but that still does not explain why the airplane turns. A
horizontal component of lift will make the airplane side-slip, not
turn. It is the stability (weathervane effect) that makes the
airplane turn.

By definition, the 'weathervane effect' occurs because air exerts
more
pressure on one side of the object (aircraft) than the other - same
definition as slipping. Therefore, are you are asserting that an
aircraft turns because it is slipping? More over, it will only
turn
if it is slipping?

Hilton


Think of the space shuttle. If you fire rockets horizontal to the
flight
path, the shuttle will slide sideways. It will not turn the nose
towards
the direction of travel. An airplane turns because it wants to point
the
nose into the relative wind.

I understand that, but you never answered my question: "Are you
asserting
that an aircraft turns because it is slipping (weathervaning)?"

Hilton








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