| 摘要 |
<p>1,130,032. Deflecting propulsive Jets. MATTEL Inc. 11 Oct., 1965 [4 Feb., 1965], No. 21953/67. Divided out of 1,130,031. Heading B7G. Apparatus for deflecting a propulsive jet issuing from a body 10l comprises a fluid supply chamber 221, a plurality of channels 261, 26m and 26n, the channels 26m and 26n being formed on opposed faces with cavities 48m and 48n and resonance chambers 60m and 60n respectively. Normally, jet streams 43m and 43n are attached to boundary faces 38m and 38n respectively, and caused to adhere thereto in laminar flow by reduced pressure in cavities 48m and 48n, where they join the stream from channel 261. To deflect the jet stream an external source of sound is generated to act upon the appropriate resonance chamber, which generates unstable vortices in the jet stream where the jet is caused to adhere to the opposed faces 50m, 50n respectively, with resulting lateral deflection of the jet stream. An alternative jet deflecting arrangement is described (Fig. 6, not shown) in which only two gas streams are employed.</p> |
