Fan blade replacement by pairs

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航空

Fan blade replacement by pairs
2
14
MW = 208400 cm.g
MW = 208230 cm.g
Blades to be
removed
1
MW = 208120 cm.g
MW = 207920 cm.g
13
15
3
MW = 208620 cm.g
MW = 208500 cm.g
120 cm.g
200 cm.g
170 cm.g
2
14
MW = 208500 cm.g
MW = 208480 cm.g
Blades to be
installed
20 cm.g
20 cm.g
10 cm.g
1
13
MW = 207120 cm.g
MW = 207110 cm.g
3
15
MW = 208650 cm.g
MW = 208630 cm.g
1 36 35
34
33
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 19 20
21
22
23
24
25
26
27
28
29
30
31
32
360 10 20
30
40
350
340
330
320
310
300
290
280
270
260
250
240
230
220
210
200
190 180 170
160
150
140
130
120
110
100
90
80
70
60
50
2 1
3
4
7
5
6
10
9
8
12
11
14
13
16
15
18
17
20
19
22
21
23
24
200 cm.g
170 cm.g
120 cm.g
190 cm.g
150 cm.g
100 cm.g
10 cm.g
20 cm.g
20 cm.g
Resultant
Vector
calculation
190 cm.g
150 cm.g
100 cm.g
360 10 20
30
40
350
340
330
320
220
210
200
190 180 170
160
150
140
130
120
110
100
90
80
70
60
50
2 1
3
12
11
13 14
16
15
18
17
20
19
22
21
23
24
190 cm.g
100 cm.g
150 cm.g
Resultant
Vector
calculation
FR = 240 cm.g
Change < or = 3 pairs ?
Resultant < 200 cm.g ?
Change < or
= 3 pairs
Fan blade change
in pairs
Residual MW
< 200 Cm.g
Yes
Resultant>
600 cm.g
Fan Blade pair
installation
Yes
Mapping procedure
856A3770
“Blamap”
No
No See change more
than 3 pairs
See page 4
Do Static
correction
Yes
Result < 600 cm;g
No
Fan blade change
in pairs
Change > 3
See previous page No pairs
Residual MW
< 600 cm.g
Yes
Mapping procedure
856A3770
“Blamap”
No : > 600
Fan Blade pair
installation
Resultant Yes : < 600
> 600 cm.g
No
Yes Result < 600 cm.g
Do Static
correction
See page 4
Fan Blade pair installation
Vibration during
vib survey ?
(customer
convenience)
Do a trim balance procedure
Yes
Return engine to service
No

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Fan blade replacement by pairs