dihedral

• Down low there is actually no dihedral, but its still not straight in.
• In the end it killed the "canard" or "tail-first" design Aeroplanes of the Dunne and similar types possess no stabilizing surface distinct from the main surface, but they have a longitudinal dihedral which renders them stable The main surface towards the wing-tips is given a decreasing angle of incidence and corresponding camber. —  The Aeroplane Speaks Fifth Edition
• (3) In order to secure the longitudinal dihedral, the angle of incidence has to be very much decreased towards the wing-tips. —  The Aeroplane Speaks Fifth Edition
• Some degree of lateral stability may be secured by means of the "lateral dihedral," i.e._, the upward inclination of the surface towards its wing-tips thus Illustration Imagine the top =V=, illustrated opposite, to be the front view of a surface flying towards you. —  The Aeroplane Speaks Fifth Edition
• If distortion can be corrected by the adjustment of wires, well and good; but if not, then some of the internal framework probably requires replacement ADJUSTMENTS.--Verify the angles of incidence, dihedral, and stagger, and the rigging position of the controlling surfaces, as often as possible UNDERCARRIAGE.--Constantly examine the alignment and fittings of the undercarriage, and the condition of tyres and shock absorbers. —  The Aeroplane Speaks Fifth Edition

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