In the previous paper, a fundamental method to evaluate the distribution of fiber orientation for FRP was established by comparison of experimental and theoretical intensity curves of Fraunhofer diffraction patterns obtained from FRP models. If the product of the aspect ratio of the fiber and the distance between the center of Fraunhofer diffraction pattern and the point, on which an intensity was determined, is 50 or more, the theoretical intensity curves agree well with the distribution curves of fiber orientation for FRP models. However, the experimental intensity curves of Fraunhofer diffraction patterns of FRP models are, owing to instrumental errors, broader than theoretical intensity curves.
In this paper, instrumental broadening effects are calculated from experimental and theoretical intensity curves of Frauhofer diffraction patterns for FRP models used as the reference specimens by using a Fourier deconvolution method. The correction of the experimental intensity curves ofFraunhofer diffraction patterns of injected FRP for the instrumental broadening is carried out by the Fourier deconvolution procedure.
The specific instrumental broadening factor is obtained from Fourier deconvolution of the experimental and theoretical intensity curves of many FRP models. This broadening factor is used for deconvolution carried out thereafter. The distribution of fiber orientation for the injected FRP are, as a whole, narrow at the central section. It is, however, surprising that the distribution of fiber orientation for the FRP having narrow width becomes broader at the terminal section. It is regarded that the regular array of fibers are distorted during molding process because of the return of melting FRP at the terminal edge of mold.

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An air flow behavior in the BD 200 type OE spinning rotor was studied by using a five-hole Pitot tube and a modelled rotor. Further, the effects of the inserted length and angle of the feed tube on an air flow in the modelled rotor were investigated. The experimental results were summarized as follows :
(1) The hollow part occured in the distribution of the circumferential velocity and the static pressure, and its position were nearly dependent on the feed tube position.
(2) An air flow in the rotor was most disturbed at 90 degree of the inserted angle of the feed tube.
(3) Longer the inserted portion of the feed tube, greater the hollow in the distribution of the circumferential velocity and higher the static pressure.
(4) When the inserted length of the feed tube was deep, or the inserted angle was large, an air flow from the feed tube ran against a bottom wall and dispersed in all directions.
(5) Longer the inserted portion of the feed tube and greater the inserted angle, less disturbed an air flow.

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