I'd like to know  how to find out(books, magzine etc) the drag/lift
ratio for a wing moving horizontally and vertically simutaneously. (
not a angle of attack problem)

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Request for Question Clarification by johnny_phoenix-ga on 22 Oct 2002 07:13 PDT

Could you shed more light on what you wish to apply this too as in the
principles of flight, the lift and drag will vary depending on the
type of wing, size and weight of the plane, and many other factors
such as speed, etc.

All we know is that the climbing wing is moving horizontally and
vertically silmultaneously, i.e. at 45 degrees.

If you let me/us know what the aim of the excercise is we, can direct
you to the right sights and literature. The principles of flight
available from any library might me a good starting point but a full
answer can be provided if you have more info.

Thanks

JP.

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Clarification of Question by boomerang-ga on 23 Oct 2002 00:10 PDT

Thank you for your response.
1. Sorry for not clarifying my question. First I need to correct is
"vertically/horizontally  moving". For "horizontally moving", what I
mean is a movement parallel to the plane of the wing. For " vertically
moving", what I mean is a movement normal to the plane of the wing.

2. A plane climbing at 45 degree is not the same as my question.
Because the    wing tilts at 45 degree too, so there is no normal
movemnt relative to the wing.
In this case the wing still moves at a direction parallel to the plane
of the wing, not normal to the plane of the wing.

3. A helicopter moving upward is similar to my question. In this
situation, the the revolution of the helicopter rotor means a movement
parallel to the plane of the wing(rotor). The upward movement of the
rotor is a normal movement to the plane of the wing(rotor).

4.The application is different from the flight of a plane.

Hope this will clarify my question.

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Clarification of Question by boomerang-ga on 26 Oct 2002 00:00 PDT

1.The normal speed in my question is usually less than 5% of the
parallel speed.
  Most of the books regarding wing only deal with parallel speed. They
just don't mention the normal speed at all.
2.I want to know how normal speed affect drag and lift coefficient