rotor frequency n (engine operating mode), fuel consumption GF. Using these data and design characteristics of a specific engine, the full gas temperature behind the mixing chamber is calculated, the average temperature of the mixed jet Tmix av is calculated, the curve hΣ=f(H) is plotted and from the condition hΣgr.calc.=0 the limiting height of formation of the condensation trace H0gr.msd in standard atmospheric conditions is determined; the total humidity over-saturation indicator hΣexp. is then calculated for each specific experiment based on the measured parameters in flight taking into account the specific type of the engine; the limiting value the total vapour over-saturation indicator hΣgr.exp. is calculated for the specific type of the engine; the values hΣgr.calc. and hΣgr.exp. are compared. If hΣgr.calc. and hΣgr.exp. are different, Tmix av is refined based on characteristic features of the specific aircraft with a specific type of engine.;EFFECT: technical result from using the disclosed invention is the possibility of more reliable and more accurate determination of the limiting height of formation of persistent condensation trails for aircraft with a specific type, design and arrangement of gas-turbine engines, which enables to give recommendations for the type of aircraft under investigation to fly in a range of altitudes without forming persistent condensation trails, i.e., with minimum impact on the greenhouse effect.;5 dwg"/>
METHOD OF FORMING MODEL FOR PREDICTING FORMATION OF CONDENSATION TRAILS OF AIRCRAFT WITH SPECIFIC TYPE OF GAS-TURBINE ENGINE USING QUANTITATIVE INDICATORS FOR FORMATION OF CONDENSATION TRAILS AND POSSIBILITY OF REDUCING IMPACT OF ENGINE EMISSION ON GREENHOUSE EFFECT
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METHOD OF FORMING MODEL FOR PREDICTING FORMATION OF CONDENSATION TRAILS OF AIRCRAFT WITH SPECIFIC TYPE OF GAS-TURBINE ENGINE USING QUANTITATIVE INDICATORS FOR FORMATION OF CONDENSATION TRAILS AND POSSIBILITY OF REDUCING IMPACT OF ENGINE EMISSION ON GREENHOUSE EFFECT
METHOD OF FORMING MODEL FOR PREDICTING FORMATION OF CONDENSATION TRAILS OF AIRCRAFT WITH SPECIFIC TYPE OF GAS-TURBINE ENGINE USING QUANTITATIVE INDICATORS FOR FORMATION OF CONDENSATION TRAILS AND POSSIBILITY OF REDUCING IMPACT OF ENGINE EMISSION ON GREENHOUSE EFFECT
FIELD: physics.;SUBSTANCE: invention relates to aviation and ecology and can be used to detect conditions of adverse effect of aircraft engine emission on climate change and developing methods of abating that effect. The following is measured on cruise flights at different altitudes: pressure p, outside air temperature toa°C (Toa°K), relative humidity (φoa, %) of atmospheric air, flight speed (number M), full gas temperature behind the low-pressure turbine rotor frequency n (engine operating mode), fuel consumption GF. Using these data and design characteristics of a specific engine, the full gas temperature behind the mixing chamber is calculated, the average temperature of the mixed jet Tmix av is calculated, the curve hΣ=f(H) is plotted and from the condition hΣgr.calc.=0 the limiting height of formation of the condensation trace H0gr.msd in standard atmospheric conditions is determined; the total humidity over-saturation indicator hΣexp. is then calculated for each specific experiment based on the measured parameters in flight taking into account the specific type of the engine; the limiting value the total vapour over-saturation indicator hΣgr.exp. is calculated for the specific type of the engine; the values hΣgr.calc. and hΣgr.exp. are compared. If hΣgr.calc. and hΣgr.exp. are different, Tmix av is refined based on characteristic features of the specific aircraft with a specific type of engine.;EFFECT: technical result from using the disclosed invention is the possibility of more reliable and more accurate determination of the limiting height of formation of persistent condensation trails for aircraft with a specific type, design and arrangement of gas-turbine engines, which enables to give recommendations for the type of aircraft under investigation to fly in a range of altitudes without forming persistent condensation trails, i.e., with minimum impact on the greenhouse effect.;5 dwg
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机译：技术领域本发明涉及航空和生态学，并且可以用于检测飞机发动机排放对气候变化的不利影响的条件以及减轻这种影响的开发方法。以下是在不同高度的巡航飞行中测得的值：压力p，外部气温t oa °C（T oa °K），相对湿度（φ oa ，％），大气空气，飞行速度（M号），低压涡轮后面的全气体温度 <图像文件=” 00000046.GIF“ he =” 7“ imgContent =” undefined“ imgFormat =” GIF“ wi =” 15“ />转子频率n（发动机工作模式），燃油消耗G F 。使用这些数据和特定发动机的设计特征，混合室后的全气体温度计算，计算混合射流的平均温度T mix av ，绘制曲线h Σ = f（H）并根据条件h Σgr .calc。 = 0确定在标准大气条件下冷凝痕迹H 0 gr.msd 的极限形成高度;然后，根据飞行中的测量参数并考虑发动机的特定类型，为每个特定实验计算总湿度过饱和指示器h Σexp。。计算特定发动机类型的极限值，即总蒸汽过饱和指示器h Σgr.exp。。比较h Σgr.calc。和h Σgr.exp。的值。如果h Σgr.calc。和h Σgr.exp。不同，则根据特定飞机的特征将T mix av 细化为效果：使用所公开的发明的技术结果是，可以更可靠，更准确地确定燃气轮机的特定类型，设计和布置的飞机的持久性凝结痕迹的极限形成高度。引擎，可以为要研究的飞机类型提供建议，使其在一定的高度飞行，而不会形成持久的凝结痕迹，即对温室效应的影响最小; 5 dwg
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