Problem regarding Dihedral of wigs

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Discussion Overview

The discussion revolves around the advantages of different dihedral configurations for wings in terms of lift generation and stability. Participants explore various wing designs, including full span and partial span dihedrals, and their implications for aircraft performance.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants suggest that a straight wing without dihedral may generate more lift but compromises roll stability.
  • There is a proposal that a dihedral configuration starting from the fuselage to a point along the wing span, followed by a straight section, could provide more lift than a straight wing with the same configuration.
  • One participant notes that a full span dihedral is simpler to construct compared to partial span dihedrals, which require more joints.
  • Another participant mentions that for model aircraft, a straight wing with a low center of gravity can achieve stability without dihedral.

Areas of Agreement / Disagreement

Participants express differing views on the effectiveness of various dihedral configurations, indicating that multiple competing perspectives remain regarding the optimal design for lift and stability.

Contextual Notes

Participants reference the impact of lift losses near the fuselage and the construction complexity of different dihedral designs, but these points are not fully resolved.

Who May Find This Useful

Aerospace engineering students, hobbyists building model aircraft, and individuals interested in aircraft design may find this discussion relevant.

agurvinder
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hi.
i have a doubt.
Which configuration is more advantageous to the wings in terms of lift generated and stability?
1. a wing with a full span dihedral from fuselage to the tip

2. A wing with a partial span range dihedral from tips to somewhere in the wings and then straight till fuselage

3. a wing with a partial span dihedral from fuselage to some point on wing and then straight wings till the tip.

please help if anyone knows.
 
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It is my understanding that a straight wing with no dihedral will provide more lift than any dihedral configuration but at the cost of roll stability. As to which dihedral is better it may be a good idea to remember there are losses in lift within the proximity of the fuselage of an aircraft. A dihedral from the fuselage to some point along the span and then a straight span would provide more lift than a straight wing from the fuselage to the same point along the wing span followed by the same dihedral.
 
PaulS1950 said:
It is my understanding that a straight wing with no dihedral will provide more lift than any dihedral configuration but at the cost of roll stability. As to which dihedral is better it may be a good idea to remember there are losses in lift within the proximity of the fuselage of an aircraft. A dihedral from the fuselage to some point along the span and then a straight span would provide more lift than a straight wing from the fuselage to the same point along the wing span followed by the same dihedral.

which dihedral is simple in construction?
 
The simplest dihedral in construction is a full span dihedral. You make one righ and one left wing and join them in the middle wit bridge or sandwhich plates. If you have the dihedral start or stop at some point along the span you have twice the joints to make.
If you are making a model it is easy to go without a dihedral and use a low center of gravity to cause stability - like a pendulum.
 
thanks for your advice. i will surely consider it
 

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