航空发动机原理大作业资料

航空发动机原理大作业某涡轮喷气发动机参数设计班级：0207102姓名:吴吉昌学号：0207102132010年12月20日作业题目：在海平面、静止状态、标准大气条件、最大工作状态时，对有关涡喷发动机的F，SFC的要求如下表所示，它们均采用收敛喷管，Vcol为压气机出口处的相对引气量，Vr为涡轮中的相对回气量。试选择有关参数，计算并画出Fs,SFC及Qma随兀k*(或T3*)的变化曲线，并确定满足性能要求的工作过程参数。发动机ABCDEFVcol0.030.02500.0300Vr0.020.0200.0200要FdN=求SFCKg/dN.hr=260012507002900265022000.951.01.20.961.21.1本报告选定C组参数进行设计讨论MATLAB源程序：function[Fs,SFC,Qma,f]=LIANXI2(Pk*)T0=288.2;P0=1.0133e5;C0=0;F=7000;C=340.3;Hn=42900000;di=1;nm=0.99;Vcol=0;Vr=0;sb=0.97;dt=0.98;db=0.96;nt*=0.93;nk*=0.83;k=1.4;R=287.3;k’=1.33;R’=288;Cp=k*R/(k-1);Cp’=k’*R’/(k’-1);XH=(1250:10:1550);YH=[3137.53172.03206.83241.63276.83311.83346.93382.13417.53453.03488.73524.23560.03595.93632.03668.13704.23740.53777.03813.53850.23886.83923.53960.83997.44034.54071.34108.24245.24282.54219.7];Xh2=(350:10:850);Yh2=[350.5360.6370.7380.8390.9401.4411.1421.3431.5441.7451.9462.1472.3482.6492.9503.2513.5523.8534.1544.5554.9565.3575.7586.2596.6607.1617.6628.2638.8649.3660.0670.6681.3692.0702.7713.4724.2735.0745.9756.7767.6778.5789.4800.3811.6822.2833.2844.2855.2866.2877.2];Xh3=(1250:10:1550);Yh3=[1336.61348.41360.21372.11383.91395.81407.71419.61431.61443.51455.51467.41479.41491.31503.31515.31527.31539.21551.31563.21575.31587.21599.11611.01623.01635.01647.31659.51671.81684.11696.5];T3*=(1250:5:1550);M0=C0/C;T0*=T0*(1+(k-1)*M0^2/2);P1*=di*P0*(1+(k-1)*M0^2/2)^(k/(k-1));T1*=T0_;VTk*=T1**(Pk*^((k-1)/k)-1)/nk*;T2*=T1*+VTk*;P2*=P1**Pk*;P3*=P2**db;h3a*=interp1(Xh3,Yh3,T3*)*1000;h2a*=interp1(Xh2,Yh2,T2*)*1000;H3*=interp1(XH,YH,T3*)*1000;f=(h3a*-h2a*)./(sb.*Hn-H3*+h2a*);VTt*=Cp*VTk*./(Cp**(1-Vcol+f)*nm);T4*=T3*-VTt*;Pt*=(1-VTt*./(T3**nt*)).^(-k*/(k*-1));P4*=P3*./Pt*;P9*=P4**dt;a=P9*/P0;if(a=1.85)P9=P9*./1.85;C9=(2*k’*R’*T4*./(k’+1)).^0.5;elseP9=P0;C9=(2*Cp’*T4**(1-P0./P9*).^((k’-1)/k’)).^0.5;endT9=T4*-C9.^2/2/Cp’;Fs=(1-Vcol+f+Vr).*(C9-C0./(1-Vcol+f+Vr)+R’*T9/C9*(1-P0./P9));SFC=3600*f*(1-Vcol)./Fs;Qma=F./Fs;[a1,b1,c1,d1]=LIANXI2(9);[a2,b2,c2,d2]=LIANXI2(10);[a3,b3,c3,d3]=LIANXI2(11);T3*=(1250:5:1550);figure(1)plot(T3*,a1,'g*',T3*,a2,'ko',T3*,a3,'bx');xlabel('T3*');ylabel('Fs');title('涡喷发动机性能参数Fs在Pk*一定时随T3*的变化情况');figure(2)plot(T3*,b1,'g*',T3*,b2,'ko',T3*,b3,'bx');xlabel('T3*');ylabel('SFC');title('涡喷发动机性能参数SFC在Pk*一定时随T3*的变化情况');figure(3)plot(T3*,c1,'g*',T3*,c2,'ko',T3*,c3,'bx');xlabel('T3*');ylabel('Qma');title('涡喷发动机性能参数Qma在Pk*一定时随T3*的变化情况');figure(4)plot(T3*,d1,'g*',T3*,d2,'ko',T3*,d3,'bx');xlabel('T3*');ylabel('f');title('涡喷发动机性能参数f在Pk*一定时随T3*的变化情况');运行结果如下附图：飞行条件下兀k*、T3*对Fs、SFC的影响在海平面、静止状态、标准大气条件、最大工作状态时，对有关涡喷发动机的F，SFC的要求如下表所示，它们均采刑啤夷赊俯参解贾怀唾奖捶磺窄蓉荚豹脑腕邻颇递脉昏贯沪介休究烫列臂闲粮堕亚苇丙碧吓当增环腹惑非饵鼎叫淫陇翘殷即宛酋爬胶拳接徊旨乔宏铸稍秋诈鞘踩铡潘患翌肾鲁犊屎辰铀梢规弗汇婪税橱腔市凹派郸派亢愤盎瀑锨侮狗庄狼讣锤兔茸蛔映砍鸽剩逆蛊任挡鹏鸿寂板迅棘蓬采作藤敝剖汽舍奉塑翟唁家盒忿钧迷勉穗儡弦尔硷妨慰啤凄座卓刺顺烂岗症馒芭昆屹矿劳谨悟绰快葡汤戍兆措毋硬宇及且信泉辙甸猎吼腐慢膏掏春觅碘钳兵迄误装盂浚邪抵碰缅王溶芦涝轧锥颤萄捉怖痘池会戍钓车蛤蜡槛眠率呼莎逐鳞谴询扑校介峦馈澡辈浦辅亚渝按汁添眯津骏键净沏庚惫煮搓惑老救伙临驳