flap hinge

flap hinge

[′flap ‚hiŋ]
(design engineering)

backflap hinge, flap hinge

A hinge having a flat plate or strap which is screwed to the face of a shutter or door.
References in periodicals archive ?
The only exception is that the scramjet duct exhibits a slight decrease of [phi] at [Ma.sub.[infinity]] = 4 due to the strong flow deflection near the flap hinge caused by expansion waves, as can be observed in Figure 7.
Piper flap hinge fairings are $1495 and give as much as 3 MPH more speed.
For $450, Laminar Flow also offers flap hinge fairings and advertises a speed increase of up to 2.5 MPH.
The airplane also has the company's flap hinge cover and wheel pant speed mods.
This results in only those nerve fibres sited at the intact flap hinge still being able to reach the central cornea.
The effect of corneal flap hinge location on corneal sensitivity and dry eye symptoms following LASIK has been investigated using meta-analysis.
The parameters for the experimental aeroservoelastic model are: wing chord (C=2b=0.182 m), wing span (L=0.4 m), rotation axis--CE (~ 28%C), mass center of the model--CG (~ 42%C), flap hinge line--S (~ 70%C), model mass (M=1.855 kg), model mass static moment about CE ([S.sub.[alpha]]=0.01729 kg x m), model mass moment of inertia about CE ([I.sub.[alpha]]=2.745 x [10.sup.-3] kg x [m.sup.2]), "plunge"-suspension stiffness constant ([K.sub.w] = 321.6 N/m), "pitch"-suspension stiffness constant ([K.sub.[alpha]]=1.25 Nm/rad), damping coefficients as a fraction of critical damping ([[zeta].sub.w]=0.1, [[zeta].sub.a]=0.1), aerodynamic coefficients of the model measured in wind tunnel [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII].
In the ADAMS model, the blade appears as a rigid-body mass, as do the links between the lag hinge and the torsion bearing and between the torsion bearing and the flap hinge.
The control flap is located at the trailing edge; the control variable u will be considered as a flap hinge torque, added to aerodynamic flap torque T.
The flap-handle position could not be determined, but both wings' flap hinges were in the extended position.
For instance, the TKS membranes are much more smoothly faired into the leading edges, there are fairings on the flap hinges and even the angle of incidence of the cabin step has been changed to reduce drag.