dihedral effect

dihedral effect

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Dihedral effect.
The stabilizing effect of dihedral in the sideslip. When an aircraft sideslips, one wing is forced down, creating a difference between the upper and the lower wings' angles of attack, with the greatest angle of attack on the lower wing. The increased angle produces increased lift on the lower wing, with a tendency to return the airplane to wings-level flight.
References in periodicals archive ?
Dihedral angle (or anhedral angle) has a strong influence on dihedral effect, the amount of roll moment produced per degree of sideslip, and is critical to an aircraft's stability in the roll (longitudinal) axis.
The dihedral angle contributes to the total dihedral effect of the aircraft and, in turn, to the aircraft's stability in the "spiral mode.
The spacecraft also has a high dihedral effect, a tendency to roll in a side wind.
In the negative AOA region, dihedral effect (roll due to sideslip) reverses.
At normal incidence, because dihedral effect is very weak, TDPO/EEC could give the results with acceptable accuracy compared with TDIPO/EEC, which is demonstrated in Figure 6(a).
These systems are inherently fast, but present disadvantages of reconstruction artifacts such as dihedral effects and misrepresenting sudden indentations and protrusions due to the monostatic nature of the collected electric field data.