Flight Without Formulae Simple Discussions On the Mechanics of the Aeroplane
Flight Without Formulae Simple Discussions On the Mechanics of the Aeroplane
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In our eReader you can find the full English version of the book. Read Flight Without Formulae Simple Discussions On the Mechanics of the Aeroplane Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Flight Without Formulae Simple Discussions On the Mechanics of the Aeroplane
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In the first case, there- fore, the turning move- ment produces a righting couple, in the second case an upsetting couple.
This effect is the more pronounced the larger the angle of incidence.
Therefore in the case of wings forming a lateral dihedral, a raised axis is stable, a lowered axis unstable, and the more so the greater the angle of incidence.
This effect is added to the secondary effect already referred FIG. 63. Unstable. Lateral V with lowered axis.
STABILITY IN STILL AIR 149 FIG. 64.... Unstable. Lateral A with raised axis.
to in the case of straight wings ; but as soon as the dihedral is appreciable, the former effect becomes by far the stronger. Now consider the case of wings forming an inverted dihedral or A. The same line of reasoning shows (see figs. 64 and 65) that : In the case of wings forming an inverted lateral dihedral a raised axis is un- stable, a lowered axis stable, and this the more so the smaller the angle of incidence.
In this case the secondary effect acts in opposition, but it becomes negligible as soon as the inverted dihedral is appreciable.
What to read after Flight Without Formulae Simple Discussions On the Mechanics of the Aeroplane?
You can find similar books in the "Read Also" column, or choose other free books by Emile Duchne to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In the first case, there- fore, the turning move- ment produces a righting couple, in the second case an upsetting couple.
This effect is the more pronounced the larger the angle of incidence.
Therefore in the case of wings forming a lateral dihedral, a raised axis is stable, a lowered axis unstable, and the more so the greater the angle of incidence.
This effect is added to the secondary effect already referred FIG. 63. Unstable. Lateral V with lowered axis.
STABILITY IN STILL AIR 149 FIG. 64.... Unstable. Lateral A with raised axis.
to in the case of straight wings ; but as soon as the dihedral is appreciable, the former effect becomes by far the stronger. Now consider the case of wings forming an inverted dihedral or A. The same line of reasoning shows (see figs. 64 and 65) that : In the case of wings forming an inverted lateral dihedral a raised axis is un- stable, a lowered axis stable, and this the more so the smaller the angle of incidence.
In this case the secondary effect acts in opposition, but it becomes negligible as soon as the inverted dihedral is appreciable.
What to read after Flight Without Formulae Simple Discussions On the Mechanics of the Aeroplane?
You can find similar books in the "Read Also" column, or choose other free books by Emile Duchne to read onlineMoreLess
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