Aviation Theory Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.

Time & Arc Conversion

Go down

Time & Arc Conversion Empty Time & Arc Conversion

Post  Admin Tue Dec 01, 2009 6:35 am

1 day = 360° = 24 hours

15° = 1 hour

1° = 4 minutes

15' = 1 minute

1' = 4 seconds

To convert time to arc:

1. Multiply the hours by 15 to obtain degrees of arc.

2. Divide the minutes of time by four to obtain
degrees.

3. Multiply the remainder of step 2 by 15 to obtain
minutes of arc.

4. Divide the seconds of time by four to obtain minutes
of arc

5. Multiply the remainder by 15 to obtain seconds of arc.

6. Add the resulting degrees, minutes, and seconds.

Example 1: Convert 14h21m39s to arc.

Solution:

(1) 14h ´ 15 = 210° 00' 00"

(2) 21m ¸ 4 = 005° 00' 00" (remainder 1)

(3) 1 ´ 15 = 000° 15' 00"

(4) 39s ¸ 4 = 000° 09' 00" (remainder 3)

(5) 3 ´ 15 = 000° 00' 45"

(6) 14h21m39s = 215° 24' 45"



To convert arc to time:

1. Divide the degrees by 15 to obtain hours.

2. Multiply the remainder from step 1 by four to obtain
minutes of time.

3. Divide the minutes of arc by 15 to obtain minutes
of time.

4. Multiply the remainder from step 3 by four to obtain
seconds of time.

5. Divide the seconds of arc by 15 to obtain seconds
of time.

6. Add the resulting hours, minutes, and seconds.

Example 2: Convert 215° 24’ 45" to time units.

Solution:

Time Arc

1d =24h =360°

60m =1h =15°

4m = 1° =60'

60s = 1m = 15'

4s = 1' = 60"

1s = 15" = 0.25'

(1) 14h ´ 15 = 210° 00' 00"

(2) 21m ¸ 4 = 005° 00' 00" (remainder 1)

(3) 1 ´ 15 = 000° 15' 00"

(4) 39s ¸ 4 = 000° 09' 00" (remainder 3)

(5) 3 ´ 15 = 000° 00' 45"

(6) 14h21m39s = 215° 24' 45"
Admin
Admin
Admin

Posts : 102
Info Rating : 1
Join date : 2009-11-30
Location : Melbourne, Australia

https://aviationtheory.forumotion.net

Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum