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1. 发明公开

EP1860416A3 Thrust correction 有权
标题翻译：推力修正
公开(公告)号：EP1860416A3
公开(公告)日：2008-05-21
申请号：EP07252104.0
申请日：2007-05-22
申请人： Rolls-Royce plc
发明人： Parfitt, Robert Neil , Turville, Martin Roger , Bristow, Maurice Charles , Brown, Stephen Geoffrey
IPC分类号： G01L5/13
CPC分类号： G01L5/133 , G01M15/14
摘要： In a method for determining the free field thrust of a gas turbine engine the gas turbine engine is attached to a movable support means in an enclosed gas turbine engine test facility, and is operated at a selected engine operating point. The thrust applied by the engine to the thrust cradle is measured via thrust measurement means. Calculations are performed to determine the gas turbine engine intake momentum drag generated by airflow into the gas turbine engine intake, the thrust cradle drag force generated by airflow past the moveable support means of the thrust cradle, the base drag generated as a result of accelerating nozzle ejector airflow, a pre-stream tube force related to turning of stream lines in the intake air path, a pre-stream tube force related to a bell mouth pull-off force. Also forces due to forward anemometer plane and nozzle static pressures and a nozzle exit buoyancy force and determined, and all of these forces are summed according to their respective positive and negative values to determine the free field thrust of the engine at the selected engine operating point.

2. 发明公开

EP1860416A2 Thrust correction 有权
标题翻译： Schubkraftkorrektur
公开(公告)号：EP1860416A2
公开(公告)日：2007-11-28
申请号：EP07252104.0
申请日：2007-05-22
申请人： Rolls-Royce plc
发明人： Parfitt, Robert Neil , Turville, Martin Roger , Bristow, Maurice Charles , Brown, Stephen Geoffrey
IPC分类号： G01L5/13
CPC分类号： G01L5/133 , G01M15/14
摘要： In a method for determining the free field thrust of a gas turbine engine the gas turbine engine is attached to a movable support means in an enclosed gas turbine engine test facility, and is operated at a selected engine operating point. The thrust applied by the engine to the thrust cradle is measured via thrust measurement means. Calculations are performed to determine the gas turbine engine intake momentum drag generated by airflow into the gas turbine engine intake, the thrust cradle drag force generated by airflow past the moveable support means of the thrust cradle, the base drag generated as a result of accelerating nozzle ejector airflow, a pre-stream tube force related to turning of stream lines in the intake air path, a pre-stream tube force related to a bell mouth pull-off force. Also forces due to forward anemometer plane and nozzle static pressures and a nozzle exit buoyancy force and determined, and all of these forces are summed according to their respective positive and negative values to determine the free field thrust of the engine at the selected engine operating point.
摘要翻译：在用于确定燃气涡轮发动机的自由场推力的方法中，燃气涡轮发动机附接到封闭的燃气涡轮发动机测试设备中的可移动支撑装置，并且在选定的发动机工作点操作。发动机施加到推力支架上的推力通过推力测量装置测量。执行计算以确定由气流进入燃气涡轮发动机进气口产生的燃气涡轮发动机进气动量阻力，由气流通过推力支架的可移动支撑装置产生的推力支架拖曳力，作为加速喷嘴产生的基础阻力喷射器气流，与进气通道中的流线的转动相关的预流管力，与喇叭口拉脱力相关的预流管力。还由于前进的风速计平面和喷嘴静压力和喷嘴出口浮力而产生的力并确定，并且所有这些力根据它们各自的正值和负值相加以确定发动机在所选发动机工作点的自由场推力。

3. 发明公开

EP1327750A3 Gas turbine measured thrust correction 有权
标题翻译：用于燃气涡轮发动机的推力测量校
公开(公告)号：EP1327750A3
公开(公告)日：2004-12-29
申请号：EP03250209.8
申请日：2003-01-14
申请人： ROLLS-ROYCE plc
发明人： Parfitt, Robert Neil , Turville, Martin Roger , Whittle, Colin A.
IPC分类号： F01D21/00 , G01L5/13
CPC分类号： F01D25/285 , F01D21/003 , F05D2200/11 , F05D2200/211 , F05D2200/221 , G01L5/133
摘要： A method for determining the free-field thrust of a gas turbine engine using an enclosed gas turbine engine test facility without recourse to an outdoor gas turbine engine test facility. The method includes the steps of calculating the gas turbine engine intake momentum drag and cradle drag generated and compensating for these losses. In a further embodiment the base drag is calculated and also compensated for.

4. 发明公开

EP1327750A2 Gas turbine measured thrust correction 有权
标题翻译：维尔法赫恩·德·埃布里恩·德·舒布斯
公开(公告)号：EP1327750A2
公开(公告)日：2003-07-16
申请号：EP03250209.8
申请日：2003-01-14
申请人： ROLLS-ROYCE plc
发明人： Parfitt, Robert Neil , Turville, Martin Roger , Whittle, Colin A.
IPC分类号： F01D21/00 , G01L5/13
CPC分类号： F01D25/285 , F01D21/003 , F05D2200/11 , F05D2200/211 , F05D2200/221 , G01L5/133
摘要： A method for determining the free-field thrust of a gas turbine engine using an enclosed gas turbine engine test facility without recourse to an outdoor gas turbine engine test facility. The method includes the steps of calculating the gas turbine engine intake momentum drag and cradle drag generated and compensating for these losses. In a further embodiment the base drag is calculated and also compensated for.
摘要翻译：一种用于使用封闭的燃气涡轮发动机测试设备来确定燃气涡轮发动机的自由场推力的方法，而不需要借助室外燃气涡轮发动机测试设备。该方法包括以下步骤：计算产生的燃气涡轮发动机进气动量阻力和摇摆阻力并补偿这些损失。在另一个实施例中，计算基础阻力并补偿。

5. 发明授权

EP1860416B1 Thrust correction 有权
标题翻译：推力修正
公开(公告)号：EP1860416B1
公开(公告)日：2009-07-08
申请号：EP07252104.0
申请日：2007-05-22
申请人： Rolls-Royce plc
发明人： Parfitt, Robert Neil , Turville, Martin Roger , Bristow, Maurice Charles , Brown, Stephen Geoffrey
IPC分类号： G01L5/13
CPC分类号： G01L5/133 , G01M15/14

6. 发明授权

EP1327750B1 Method for determining the free-field thrust of a gas turbine engine 有权
标题翻译：用于确定开放领域的燃气涡轮发动机的推力方法
公开(公告)号：EP1327750B1
公开(公告)日：2008-04-02
申请号：EP03250209.8
申请日：2003-01-14
申请人： ROLLS-ROYCE PLC
发明人： Parfitt, Robert Neil , Turville, Martin Roger , Whittle, Colin A.
IPC分类号： F01D21/00 , G01L5/13
CPC分类号： F01D25/285 , F01D21/003 , F05D2200/11 , F05D2200/211 , F05D2200/221 , G01L5/133

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