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Page Title:
The Wind Side of the CR-2 Computer -Cont. |
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|  INSTRUMENT FLIGHT RULES WORKBOOK
CHAPTER FIVE
5. Read up from the wind dot to the right crosswind scale to determine crosswind component
(25 knots).
6.
Add 25 knots (tailwind component) to 140 knots (TAS) to determine the ground speed.
Answer: Ground Speed = 165 knots
NOTE
The headwind/tailwind and left/right crosswind scales CAN be
assigned incremental value other than those printed on the CR-2.
However, the values assigned must remain the same throughout the
problem.
For example, a line must represent 2, 4, 5 KTS, etc. But then all the lines must represent that
value during the entire process.
PRACTICE
TAS
WIND(T)
COURSE(MAG)
GS
1.
150 KTS
120 /20
340
_________
2.
165 KTS
180 /10
246
_________
3.
96 KTS
090/15
360
_________
4.
116 KTS
050/35
212
_________
5.
204 KTS
040/40
131
_________
Answers
1.
165 KTS
2.
161 KTS
3.
96 KTS
4.
148 KTS
5.
204 KTS
5-10 CR-2 COMPUTER
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