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    • 6. 发明授权
    • Integral rocket-ramjet closed loop fuel control system
    • 一体式火箭冲压喷气闭环燃油控制系统
    • US4277940A
    • 1981-07-14
    • US60444
    • 1979-07-25
    • Kermit I. HarnerJohn P. Patrick
    • Kermit I. HarnerJohn P. Patrick
    • F02C9/44F02K7/18F02K9/06
    • F02C9/44F02K7/18Y02T50/671
    • In an integral rocket-ramjet having a combustor which initially serves as a rocket combustion chamber for booster propellant, and after the booster propellant is expended serves as a ramjet combustor where fuel and air are burned, a fuel control system is described for the ramjet stage by which ram burner light-off is automatically initiated upon transition from rocket to ramjet propulsion. The fuel control regulates fuel flow to the combustor over the entire flight regime and responds to operating conditions to provide a light-off schedule, to stabilize the shock wave at the air inlet, to provide a maximum fuel-to-air ratio limit, to limit the maximum vehicle Mach number, and to prevent lean burner blowout by providing a minimum fuel-to-air ratio limit. Mach number limiting and air inlet margin limiting are performed in closed loop fashion, while the other functions are scheduled or open loop controls. The closed loop functions are performed by scheduling a ratio of combustion chamber pressure to a reference pressure, and comparing this ratio to the ratio of the pressures as measured, any error therebetween being used to produce a desired fuel flow to combustion chamber pressure ratio. By measuring the actual combustion chamber pressure, the desired fuel flow is obtained.
    • 在具有最初用作助燃推进剂的火箭燃烧室的燃烧器的整体式火箭冲压喷气发动机中,并且在助燃剂推进剂消耗之后用作燃料和空气燃烧的冲压喷气燃烧器时,描述了用于冲压喷气级的燃料控制系统 在从火箭转向冲压喷气推进时,自动启动柱塞燃烧器点火。 燃料控制调节在整个飞行状态下到燃烧器的燃料流量,并响应操作条件以提供熄灯计划,以稳定进气口处的冲击波,以提供最大的燃油比空气比限制 限制最大车辆马赫数,并通过提供最小燃料空气比限制来防止燃油喷嘴泄漏。 马赫数限制和进气口边界限制以闭环方式执行,而其他功能是调度或开环控制。 通过调节燃烧室压力与参考压力的比率来执行闭环功能,并且将该比率与测量的压力比进行比较,其间的任何误差被用于产生期望的燃料流量与燃烧室压力比。 通过测量实际的燃烧室压力,获得所需的燃料流量。
    • 9. 发明授权
    • Integral rocket-ramjet open loop fuel control system
    • 一体式火箭冲击式开环燃油控制系统
    • US4263781A
    • 1981-04-28
    • US60443
    • 1979-07-25
    • Kermit I. HarnerJohn P. Patrick
    • Kermit I. HarnerJohn P. Patrick
    • F02C9/28F02K9/06
    • F02C9/28F05D2270/122
    • In an integral rocket-ramjet having a combustor which initially serves as a rocket combustion chamber for booster propellant, and after the booster propellant is expended, serves as a ramjet combustor where fuel and air are burned, a fuel control system is described for the ramjet stage by which ram burner light-off is automatically initiated upon transition from rocket to ramjet propulsion. The fuel control regulates fuel flow to the combustor over the entire flight regime and responds to operating conditions to provide a light-off schedule, to stabilize the shock wave in the air inlet, to provide a maximum fuel-to-air ratio limit, to limit the maximum vehicle Mach number, and to prevent lean burner blowout by providing a minimum fuel-to-air ratio limit. Mach number limiting is performed in closed loop fashion, while the other functions are scheduled or open loop controls. Fuel flow to combustion chamber pressure ratio is used to provide fuel-to-air ratio limits, actual combustion chamber pressure being measured to provide the desired fuel flow signal.
    • 在具有最初用作助燃推进剂的火箭燃烧室的燃烧器的整体式火箭 - 冲压式喷气式发动机中,并且在助燃剂推进剂消耗之后,用作燃料和空气燃烧的冲压式喷射燃烧器,描述了用于冲压式喷气发动机的燃料控制系统 在从火箭到冲压喷气推进过渡时,自动启动柱塞燃烧器点火的阶段。 燃料控制调节在整个飞行状态下到燃烧器的燃料流量,并且响应于操作条件以提供点火时间表,以稳定进气口中的冲击波,以提供最大的燃油比空气比限制 限制最大车辆马赫数,并通过提供最小燃料空气比限制来防止燃油喷嘴泄漏。 马赫数限制以闭环方式执行,而其他功能则是调度或开环控制。 使用燃料流到燃烧室压力比来提供燃料 - 空气比限度,测量实际燃烧室压力以提供期望的燃料流量信号。