公开(公告)号：US5069397A

公开(公告)日：1991-12-03

申请号：US781864

申请日：1985-09-30

Applicant: Ralph L. Haslund

Inventor： Ralph L. Haslund

IPC: B64C1/14 ,  B64C21/04 ,  B64C23/00

CPC classification number: B64C23/005 ,  B64C21/04 ,  B64C2230/04 ,  B64C2230/06 ,  B64C2230/16 ,  Y02T50/166

Abstract: In an aero-optical interface for an aircraft optical aperture, the separation of the upstream boundary layer from the edge of the aperture creates a region of turbulance which persists downstream over the full area of the aperture. This invention promotes an early develpment of a steady velocity profile at the upstream aperture edge which is approximately the same as a stable, self-similar shear flow velocity profile over the entire aperture. This is accomplished by thickening the boundary layer upstream of the aperture, and blowing a curtain of air across the aperture from its upstream edge at the point of separation of the boundary flow. This produces a shear flow region foot that causes the overall velocity profile to be equal to a stable self-similar free shear layer.

Abstract translation: 在用于飞行器光学孔径的航空 - 光学界面中，上游边界层与孔边缘的分离产生在孔的整个区域上沿着下游流动的湍流区域。 本发明促进了在上游孔边缘处的稳定速度分布的早期开发，其与整个孔上的稳定的，自相似的剪切流速分布大致相同。 这是通过使孔的上游的边界层变厚，并且在边界流的分离点从其上游边缘吹过空气的窗口来实现的。 这产生剪切流动区域脚，其导致总体速度分布等于稳定的自相似自由剪切层。

公开(公告)号：US4703904A

公开(公告)日：1987-11-03

申请号：US623152

申请日：1984-06-21

Applicant: Ralph L. Haslund

Inventor： Ralph L. Haslund

IPC: B64C1/14 ,  B64C23/00 ,  B64D47/00 ,  G02B5/00 ,  G02B7/00

CPC classification number: B64C23/005 ,  B64D47/00 ,  G02B5/00 ,  G02B7/007

Abstract: A method and apparatus for providing an aero-optical interface by stabilizing a shear layer in a fluid flowing over an aperture. The apparatus extracts fluid from a remote part of the flowing fluid and conveys it to the underside of the shear layer where it feeds the shear layer and prevents the shear layer from deflecting into the cavity underlying the aperture. A preferred embodiment also includes a ramp downstream of the aperture. Stability of the shear layer is optimized by placing the aperture where the pressure distribution absent the aperture would have been constant. The resulting thin, self-similar shear layer is an optimized viscid flowfield interface for uniform transmission of optical radiation.

Abstract translation: 一种用于通过在流过孔的流体中稳定剪切层来提供航空光学界面的方法和装置。 该装置从流动流体的远端部分提取流体并将其输送到剪切层的下侧，在剪切层的下侧，在剪切层的下侧，该剪切层进入剪切层并防止剪切层偏转到孔下面的空腔中。 优选实施例还包括在孔的下游的斜坡。 剪切层的稳定性通过放置不存在孔的压力分布不变的孔来优化。 所得到的薄的自相似剪切层是用于均匀透射光辐射的优化的粘性流场界面。

公开(公告)号：US4671474A

公开(公告)日：1987-06-09

申请号：US623153

申请日：1984-06-21

Applicant: Ralph L. Haslund

Inventor： Ralph L. Haslund

IPC: B64C21/06 ,  B64C23/06

CPC classification number: B64C21/06 ,  B64C23/06 ,  B64C2230/04 ,  Y02T50/162 ,  Y02T50/166

Abstract: An apparatus for controlling flow over a surface, especially transonic flow, including means for embedding within the surface small vortices with their axes parallel to said surface and transverse to said fluid flow, and means for driving said vortices.

Abstract translation: 一种用于控制表面上流动的装置，特别是跨音速流动，包括用于将其旋转平行于所述表面并横向于所述流体流动的小涡流内嵌入的装置，以及用于驱动所述涡流的装置。

公开(公告)号：US4386578A

公开(公告)日：1983-06-07

申请号：US266978

申请日：1981-05-26

Applicant: Ralph L. Haslund

Inventor： Ralph L. Haslund

IPC: B05B7/22 ,  B05B17/00 ,  H05H1/54 ,  C23C13/12

CPC classification number: B05B7/22 ,  B05B17/00 ,  H05H1/54

Abstract: A vacuum deposit device for use in producing thin film depositions. A metallic mass is accelerated along a pair of rail-type electrodes. The discharge current passing through the mass during acceleration is controlled as to magnitude and time duration to insure that the magnetic pinch pressure produced by the current exceeds the thermal expansion pressure of the mass thereby maintaining the mass in a solid, non-vapor state during acceleration. The device permits control over mass exit velocities and permits deposition areas of well defined shoulders.

Abstract translation: 一种用于生产薄膜沉积的真空沉积装置。 沿着一对轨道型电极加速金属质量。 加速过程中通过质量的放电电流被控制为大小和持续时间，以确保由电流产生的磁夹压力超过质量块的热膨胀压力，从而在加速期间将质量保持在固体非蒸汽状态 。 该装置允许控制质量出口速度，并允许明确定义的肩部的沉积区域。

公开(公告)号：US4200819A

公开(公告)日：1980-04-29

申请号：US835196

申请日：1977-09-21

Applicant: Ralph L. Haslund

Inventor： Ralph L. Haslund

IPC: H01S3/0979 ,  H01J1/88 ,  H01J61/28 ,  H01S3/03

CPC classification number: H01S3/0979

Abstract: The nozzle and laser channel walls for a supersonic electrical discharge gas laser are formed from fully contoured single pieces of dielectric material. The axially symmetric, two-dimensional wall contours of the combined nozzle and laser channel describe a continuous extension of the subsonic flow plenum, into which the gas is initially introduced, and which is located upstream of the combined nozzle-laser channel. A high precision portion of the contour of the combined nozzle-laser channel extends from a beginning point in the nozzle inlet region near the throat to a termination point which is beyond the nozzle exit plane a distance equal to approximately one-half of the nozzle exit height. The high precision portion is a region of continuous curvature supersonic expansion. Beyond the termination point of the continuous curvature region the walls of the combined nozzle-laser channel are flat and diverge at a constant angle, relative to the flow axis of the laser, to the end of the combined nozzle-laser channel. Flat, flush mounted electrodes are positioned in the flat walled section of the laser channel, forming a discharge region with maximum flow density uniformity and minimum boundary layer thickness. In one embodiment, one electrode is a grid, with bars normal to the direction of flow, and is mounted in a laser channel wall section which is capable of rotation.

Abstract translation: 用于超音速放电气体激光器的喷嘴和激光通道壁由完全成型的单片电介质材料形成。 组合的喷嘴和激光通道的轴对称的二维壁轮廓描述了亚音速气流室的连续延伸，气体最初被引入气室中，并且位于组合的喷嘴 - 激光通道的上游。 组合的喷嘴 - 激光通道的轮廓的高精度部分从喉部附近的喷嘴入口区域的起始点延伸到超出喷嘴出口平面的终止点，该距离等于喷嘴出口的大约二分之一 高度。 高精度部分是连续曲率超音速膨胀的区域。 在连续曲率区域的终点之外，组合的喷嘴 - 激光通道的壁是平坦的并且相对于激光的流动轴线以恒定的角度发散到组合的喷嘴 - 激光通道的端部。 平面齐平的电极定位在激光通道的平壁部分中，形成具有最大流动密度均匀性和最小边界层厚度的放电区域。 在一个实施例中，一个电极是栅格，其具有垂直于流动方向的条，并且安装在能够旋转的激光通道壁部分中。