Etude du profil LOCKHEED C-141 BL958.89

Etude du profil LOCKHEED C-141 BL958.89 par Thomas Ferey

Animation à incidence 2°
Animation à incidence -2°

Résultats XFoil
10000
15000
20000
25000
30000
35000
40000
45000
50000
60000
70000
80000
90000
100000

Position relative du centre de poussée
i = -2° Re Cz Cx Cm x/c 10000 -0.0546 0.04485 -0.0299 -1.40556 15000 -0.2504 0.04321 -0.0189 0.54116 20000 -0.2284 0.04019 -0.0258 0.69100 25000 -0.2235 0.03830 -0.0270 0.71406 30000 -0.2212 0.03683 -0.0272 0.71446 35000 -0.2188 0.03558 -0.0273 0.71508 40000 -0.2167 0.03469 -0.0272 0.71388 45000 -0.2163 0.03393 -0.0269 0.70470 50000 -0.2156 0.03340 -0.0266 0.69818 60000 -0.2150 0.03216 -0.0261 0.68335 70000 -0.2158 0.03134 -0.0254 0.66431 80000 -0.2162 0.03079 -0.0247 0.64856 90000 -0.2158 0.03019 -0.0240 0.63491 100000 -0.2181 0.02921 -0.0238 0.62071	i = -1° Re Cz Cx Cm x/c 10000 -0.0820 0.03991 -0.0252 -0.07354 15000 -0.1435 0.03634 -0.0167 0.09553 20000 -0.1116 0.03469 -0.0261 -0.04166 25000 -0.1067 0.03355 -0.0270 -0.06439 30000 -0.1070 0.03248 -0.0266 -0.06241 35000 -0.1085 0.03153 -0.0261 -0.05650 40000 -0.1104 0.03072 -0.0256 -0.04942 45000 -0.1110 0.03013 -0.0252 -0.04533 50000 -0.1111 0.02935 -0.0251 -0.04625 60000 -0.1124 0.02847 -0.0244 -0.03812 70000 -0.1137 0.02764 -0.0237 -0.02984 80000 -0.1155 0.02724 -0.0229 -0.01838 90000 -0.1166 0.02628 -0.0227 -0.01670 100000 -0.1184 0.02588 -0.0221 -0.00773
i = 0 Re Cz Cx Cm x/c 10000 0.0038 0.0407 -0.0213 5.85526 15000 0.0011 0.0345 -0.0210 19.34091 20000 -0.0014 0.0309 -0.0210 -14.75000 25000 -0.0047 0.0284 -0.0213 -4.28191 30000 -0.0100 0.0266 -0.0216 -1.91000 35000 -0.0017 0.0283 -0.0248 -14.33824 40000 -0.0048 0.0281 -0.0240 -4.75000 45000 -0.0072 0.0277 -0.0234 -3.00000 50000 -0.0091 0.0272 -0.0230 -2.27747 60000 -0.0128 0.0263 -0.0224 -1.50000 70000 -0.0152 0.0256 -0.0220 -1.19737 80000 -0.0168 0.0250 -0.0218 -1.04762 90000 -0.0187 0.0246 -0.0215 -0.89973 100000 -0.0002 0.0245 -0.0247 -123.25000	i = 1° Re Cz Cx Cm x/c 10000 0.0804 0.0419 -0.0174 0.47103 15000 0.0802 0.0359 -0.0173 0.48527 20000 0.0802 0.0324 -0.0173 0.49512 25000 0.0803 0.0300 -0.0175 0.50486 30000 0.0807 0.0284 -0.0177 0.51235 35000 0.0810 0.0271 -0.0180 0.52047 40000 0.0813 0.0261 -0.0182 0.52636 45000 0.0816 0.0252 -0.0185 0.53319 50000 0.0819 0.0246 -0.0187 0.53806 60000 0.0823 0.0235 -0.0192 0.54895 70000 0.0826 0.0227 -0.0197 0.55920 80000 0.0827 0.0221 -0.0202 0.56943 90000 0.1193 0.0219 -0.0269 0.57461 100000 0.1773 0.0215 -0.0369 0.57412
i = 2° Re Cz Cx Cm x/c 10000 0.1554 0.0438 -0.0143 -0.32648 15000 0.1572 0.0379 -0.0145 -0.21855 20000 0.1584 0.0345 -0.0149 -0.18118 25000 0.1596 0.0322 -0.0153 -0.16218 30000 0.1607 0.0306 -0.0157 -0.15214 35000 0.1616 0.0294 -0.0161 -0.14720 40000 0.1624 0.0284 -0.0165 -0.14530 45000 0.1631 0.0276 -0.0169 -0.14541 50000 0.1636 0.0270 -0.0172 -0.14512 60000 0.1646 0.0260 -0.0178 -0.14683 70000 0.2191 0.0258 -0.0281 -0.16485 80000 0.2969 0.0247 -0.0409 -0.15457 90000 0.3379 0.0232 -0.0469 -0.14225 100000 0.3714 0.0216 -0.0515 -0.13172	i = 3° Re Cz Cx Cm x/c 10000 0.2276 0.0466 -0.0120 0.19514 15000 0.2307 0.0407 -0.0126 0.19341 20000 0.2330 0.0374 -0.0133 0.19099 25000 0.2349 0.0352 -0.0140 0.18848 30000 0.2364 0.0337 -0.0146 0.18632 35000 0.2376 0.0325 -0.0152 0.18409 40000 0.2385 0.0316 -0.0157 0.18223 45000 0.2393 0.0309 -0.0162 0.18034 50000 0.2569 0.0306 -0.0198 0.17080 60000 0.3654 0.0297 -0.0380 0.14372 70000 0.4270 0.0273 -0.0463 0.13947 80000 0.4785 0.0246 -0.0527 0.13793 90000 0.5123 0.0222 -0.0563 0.13830 100000 0.5399 0.0200 -0.0590 0.13903
i = 4° Re Cz Cx Cm x/c 10000 0.2938 0.0504 -0.0107 0.20351 15000 0.2974 0.0448 -0.0118 0.19831 20000 0.3000 0.0416 -0.0129 0.19332 25000 0.3019 0.0396 -0.0139 0.18884 30000 0.3031 0.0382 -0.0147 0.18524 35000 0.3040 0.0371 -0.0154 0.18209 40000 0.4018 0.0375 -0.0327 0.13764 45000 0.4637 0.0356 -0.0410 0.12578 50000 0.5096 0.0332 -0.0459 0.12186 60000 0.5822 0.0280 -0.0523 0.11981 70000 0.6376 0.0226 -0.0555 0.12208 80000 0.6786 0.0186 -0.0582 0.12283 90000 0.6949 0.0166 -0.0591 0.12339 100000 0.7144 0.0150 -0.0611 0.12226	i = 5 Re Cz Cx Cm x/c 10000 0.3475 0.0562 -0.0111 0.49827 15000 0.3478 0.0512 -0.0131 0.51422 20000 0.3466 0.0487 -0.0150 0.54054 25000 0.4411 0.0505 -0.0351 0.70770 30000 0.6303 0.0428 -0.0529 0.63392 35000 0.7404 0.0303 -0.0527 0.54120 40000 0.7617 0.0258 -0.0503 0.51288 45000 0.7710 0.0236 -0.0492 0.50088 50000 0.7738 0.0224 -0.0485 0.49488 60000 0.7757 0.0210 -0.0481 0.49061 70000 0.7804 0.0201 -0.0489 0.49199 80000 0.7848 0.0194 -0.0499 0.49459 90000 0.7881 0.0187 -0.0506 0.49612 100000 0.7902 0.0182 -0.0512 0.49767

 
Exemple de valeurs de Trainée T, de Portance P, du Moment M par unité d'envirgure avec :

La masse volumique de l'air 1.24 kg/m^3
Viscosité cinématique 1.50E-05 m^2/s
La corde c=0.03 m
L'envergure	1 m
incidence =	0°													   
																   
			Re		Cz	Cx	Cm		V	T	P		M		x/c		Cz/Cx	   
																   
			10000		0.0038	0.0407	-0.0213		5.0	0.01892	0.001770	0.00057		5.855260	0.09341	   
			15000		0.0011	0.0345	-0.0210		7.5	0.03612	0.001150	0.00108		19.34091	0.03187	   
			20000		-0.0014	0.0309	-0.0210		10.0	0.05747	-0.00260	0.00172		-14.75000	-0.04531	   
			25000		-0.0047	0.0284	-0.0213		12.5	0.08265	-0.01366	0.00248		-4.28191	-0.16526	   
			30000		-0.0100	0.0266	-0.0216		15.0	0.11136	-0.04185	0.00334		-1.91000	-0.37580	   
			35000		-0.0017	0.0283	-0.0248		17.5	0.16098	-0.00968	0.00483		-14.33824	-0.06016	   
			40000		-0.0048	0.0281	-0.0240		20.0	0.20892	-0.03571	0.00627		-4.75000	-0.17094	   
			45000		-0.0072	0.0277	-0.0234		22.5	0.26064	-0.06780	0.00782		-3.00000	-0.26012	   
			50000		-0.0091	0.0272	-0.0230		25.0	0.31608	-0.10579	0.00948		-2.27747	-0.33468	   
			60000		-0.0128	0.0263	-0.0224		30.0	0.44060	-0.21427	0.01322		-1.50000	-0.48632	   
			70000		-0.0152	0.0256	-0.0220		35.0	0.58284	-0.34633	0.01749		-1.19737	-0.59421	   
			80000		-0.0168	0.0250	-0.0218		40.0	0.74519	-0.49997	0.02236		-1.04762	-0.67093	   
			90000		-0.0187	0.0246	-0.0215		45.0	0.92656	-0.70434	0.02780		-0.89973	-0.76016	   
			100000		-0.0002	0.0245	-0.0247		50.0	1.13693	-0.00930	0.03411		-123.250	-0.00818

Bande dessinée à Re=10000 10000

Bande dessinée à Re=100000