Truncated pyramid-shape multi-hole pitot probe and flight velocity
detection system using said truncated pyramid-shape multi-hole pitot
probe
    1.
    发明授权
    Truncated pyramid-shape multi-hole pitot probe and flight velocity detection system using said truncated pyramid-shape multi-hole pitot probe 失效
    截锥金字塔形多孔皮托探头和飞行速度检测系统采用截头棱锥形多孔皮托探针

    公开(公告)号:US5423209A

    公开(公告)日:1995-06-13

    申请号:US249068

    申请日:1994-05-25

    CPC分类号: G01F1/46 G01P13/025 G01P5/165

    摘要: A flight velocity detection system using a truncated pyramid-shape multi-e Pitot probe in which an extreme end portion has a truncated pyramid-shape, a cylindrical hole is provided at the apex thereof, a total pressure tube of a smaller diameter than that of the cylindrical hole is secured at a position by a predetermined length determined by a relationship with the diameter of the cylindrical hole from the extreme end of the cylindrical hole, and groups of pressure holes comprised of a plurality of pressure holes are arranged in each of the truncated pyramid surfaces of the truncated pyramid shape. Items of pressure information detected by the probe are input into a velocity vector processor to convert them into electric signals, and signals are processed using pressure coefficients of the holes of the probe with respect to the velocity vector stored in advance in the velocity vector processor to calculate flight velocity vector (V, .alpha., .beta.) with respect to the probe axis from the pressure information and air density.

    摘要翻译: 使用截头棱锥形多孔皮托探头的飞行速度检测系统,其顶端具有截头棱锥形,圆柱形孔设置在其顶点,直径小于 圆柱形孔被固定在与圆柱形孔的前端与圆柱形孔的直径关系确定的预定长度的位置处,并且由多个压力孔组成的一组压力孔布置在 截头棱锥形截面金字塔表面。 由探头检测到的压力信息的项目被输入到速度矢量处理器中以将它们转换为电信号,并且使用相对于预先存储在速度矢量处理器中的速度向量的探针的孔的压力系数来处理信号, 从压力信息和空气密度计算相对于探针轴的飞行速度矢量(V,α,β)。

    Flight velocity vector measuring system in wide velocity region using truncated pyramid-shape probe
    2.
    发明授权
    Flight velocity vector measuring system in wide velocity region using truncated pyramid-shape probe 失效
    飞行速度矢量测量系统在宽速度区域使用截头棱锥形探针

    公开(公告)号:US06176130B1

    公开(公告)日:2001-01-23

    申请号:US09004272

    申请日:1998-01-08

    IPC分类号: G01C2100

    CPC分类号: G01P5/165 G01P13/025

    摘要: A flight velocity vector measuring system in a wide velocity region in which an attack angle pressure coefficient C&agr; of air current, a sideslip angle pressure coefficient C&bgr; and an air current angle pressure coefficient C&ggr; are obtained from five pressure information detected by a square truncated pyramid-shape probe. The aforementioned pressure coefficients, pressure calibration coefficients with respect to a Mach number M, an attack angle &agr; and a sideslip angle &bgr; every velocity region obtained by dividing the wide velocity region into a plurality of regions stored in advance in the calculation processor, and a Mach number M, an attack angle &agr; and a sideslip angle &bgr; of unknown quantity constitute a calculation processing expression comprising a polynomial approximation to call the pressure calibration coefficients in the velocity region, and flight velocity vectors (M, &agr;, &bgr;) are calculated by the polynomial approximation.

    摘要翻译: 在宽速度区域中的飞行速度矢量测量系统,其中从由截顶棱锥形截面检测到的五个压力信息获得空气流的攻角角压力系数Calpha,侧滑角压力系数Cbeta和气流角压力系数C gamma, 形状探针。 上述压力系数,相对于马赫数M的压力校准系数,通过将宽速度区域划分为预先存储在计算处理器中的多个区域而获得的每个速度区域的攻角α和侧滑角β,以及 马赫数M,未知量的攻角α和侧滑角β构成计算处理表达式,其包括用于调用速度区域中的压力校准系数的多项式近似,并且飞行速度矢量(M,α,β)由 多项式近似。

    Air supply apparatus for fuel cell system
    5.
    发明授权
    Air supply apparatus for fuel cell system 失效
    燃料电池系统供气装置

    公开(公告)号:US4759997A

    公开(公告)日:1988-07-26

    申请号:US6426

    申请日:1987-01-23

    IPC分类号: H01M8/04 H01M8/06

    CPC分类号: H01M8/04089 H01M8/0612

    摘要: The air supply apparatus for fuel cell system serves to supply air to the cell cathode and the combustion section of the reformer in the fuel cell system and recover energy from exhaust gases being discharged from the system. The apparatus has a compressor for supply of air to the system, an exhaust gas turbine for driving the compressor through recovery of energy from the system exhaust gas, an auxiliary combustor for compensating deficiency of the energy being recovered, if any, and pipe lines connecting those parts. The auxiliary combustor particularly employs a combustion catalyst in its combustion section. The apparatus secures stable combustion of the fuel gas in the auxiliary combustor, and its operation displays improved stability against any load change or partial load.

    摘要翻译: 用于燃料电池系统的空气供应装置用于向燃料电池系统中的重整器的电池阴极和燃烧部分供应空气,并从排出的废气中回收能量。 该装置具有用于向系统供给空气的压缩机,用于通过从系统废气中回收能量来驱动压缩机的排气涡轮机,用于补偿正在回收的能量不足的辅助燃烧器(如果有的话),以及连接管线 那些部分。 辅助燃烧器在其燃烧部分中特别采用燃烧催化剂。 该装置确保燃料气体在辅助燃烧器中的稳定燃烧,并且其操作显示改进的任何负载变化或部分负载的稳定性。