.
.
, η = 0.9850.980.980.90 = 0.855
b = 144 /().
䳿 㳿 q, /(),
. (5.45)
η = 0.40 ÷ 0.50, q = 9000 ÷ 7200 /().
η. b. q. .
, , /,
(/). (5.46)
η = η η η. = 0.99 0.98 0.90 = 0.873
b = 39.08 / = 140.7 /(·.).
.
:
㳿 㳿 쳺 . , , 㳿 , . , , , .
( ) . , 㳿 .
, . . 5.1,
.
D, D(h h), h h - ﳿ . N ,
,
, ,
.
(5.7) (5.9), , ,
.
,
:
.
³ (5.11), , , . . 5.1.
0 ≤ ≤ 1; = 0 h = h, ( ); = 1 h = h0, ( ). = 0.3 ÷ 0.7, = 0.5. D = 0, D0 = D0, , .
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(5.10) , .
㳿 ,
; .
㳿
.
.