Low speed measurements were made on the flow separated from the normal flat plate by determining the distributions of mean velocity and static pressure along the trajectories normal to the streamlines. The separated flow was turbulent except for the narrow laminar region near the model. Similarity is observed in the distributions for each property both in laminar and turbulent regions. Comparing the measured results with two theories for laminar and turbulent half-jet mixings along curved streamlines due to UCHIDA et al. fair agreement is obtained although in the limited extent of the flow field.
This paper describes an experimental study of the propagation of shock waves in twodimensional converging channels, and the results are compared with numerical calculations reported previously (ABARBANEL and GOLDBERG, 1972). It is shown that a wedge shape channel produces a larger gain in shock strength than a channel having a parabolic shape, and it continues to increase with the initial pressure ratio.
Stresses in the single bayed three spar box beam are obtained from Eqs. (2.5), (2.6) and so on. By transforming them into Eqs. (2.25), (2.26), the higher approximation is given as expressed by Eqs. (2.32), (2.33) and reduced to Eqs. (2.35), (2.36). Hence the deviation stresses. from 0approximation are approximately proportional to γ. See Fig. 2 and Eq. (2.15). Torsion center is expressed rigorously by Eq. (3.4), and approximated by Eq. (3.8). Hence, torsion center is positioned not at γ=0, but generally deviates backward by the effect of V, Higher approximation is given by Eq (3.11). See Fig. 3 and Eqs. (2.16), (2.17). The method described above indicates the good guide line for treating the stresses in the sweptback three spars box beam.
In the previous report, one of the authors, analyzed the fluid motion near the nozzle exit of an idealized peripheral skirt of ACV, investigated the effect of the peripheral skirt configuration on the hovering performance of ACV and made propositions regarding the design of the skirt geometry. Thereafter, the method of the numerical computation has been improved by some manipulations of the theoretical expressions and the calculations have been made over the wider range of the skirt configuration and the operating condition of ACV with higher accuracies than the previous. In parallel with this, model tests have been carried out to examine the theoretical results given in the previous report. It has been found that the results of the calculation, which have turned out to be in agreement with the previous ones with a few exceptions, agree well with the experimental results and that the conclusions given in the previous report are reasonable.