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C:cr -Cd. :in11.$V2 I : () V : (/) C:cr: () Cd. :in : () 1 .1. - 20 - V(/) ()200< V 350 150< V 200 600120< V 150 40070< V 120 300V 70 250 2. : 250 , 200 . , . () 1,000 ( 500) 500 ( 200) 1. ,, .,. (1) .I11.$

CccV2(7-1),Ccc:(mm)V:(km/h)I:(m),,(V:cr) - 21 -(Ccc).(V:cr)(I)(7-2)(C)(Cd), (V:in)(7-3)(C)(Cc) .I

C-Cd11.$V:cr2(7-2)I

C-Cc11.$V:in2(7-3)(C),(Cd)(Cc) .

C-Cd11.$V:cr2I

C-Cc11.$V:in2(7-4)(2). ENV13803-1:2002(),, (7-5). I

Ccc11.$V2(m) (7-5)Ril800.0110(),(V)(Ccc) .(Ccc) 290mm(:230mm).Ccc C-Cd(7-6)TSI(), (). . - 22 -(3)(V) :I

C-Cd11.$V2

1$0-11011.$8024.9$4.000 1:I

C-Cd11.$V2

100-10011.$20021.$12.000 2:I

C-Cd11.$V2

100-10011.$1021.0211.200 3:I

C-Cd11.$V2

100-10011.$120204$00 4:I

C-Cd11.$V2

100-10011.$702222400,(V) . I

C-Cd11.$V2(7-7) I:(m) V:(km/h) C:(mm) Cd:(mm) 160mm, 200200km/h,.Cd 20mm- a. - (.Cd) . (a) (b) - 52 - ()L 4 V .Cd1000 (dCddt)|i:=69.4mm/sec SL 0 V .Cd1000 (dCddt)|i:=46.2mm/sec BlossL 4. V .Cd1000 (dCddt)|i:=61.7mm/sec,V:b. ]L 15mm,]L]L

24 IL21000()]L

4$ IL21000(S)]L

40 IL21000(Bloss)c. (|I)(1:m) (.Cd. |i:,mm)(km/h)10683473127100130200280300).- L 0.20V ,( Ril800.0110).L 0.1V

I11000-

I210009: minL 0.0m - .L 0.10V:V 70km/hL 0.1V:70