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Calculating Logbook Time?  
User currently offlineJSC_23 From New Zealand, joined Jul 2001, 223 posts, RR: 0
Posted (11 years 7 months 1 week 3 days 11 hours ago) and read 3903 times:

I was just wondering whether anybody knows a quick and easy way to working out the time you log in a logbook converting it from hours, minutes to the decimal point form.
Regards
JSC_23


Be a realist...Remain a dreamer!
5 replies: All unread, jump to last
 
User currently offlineIllini_152 From United States of America, joined Jan 2001, 1000 posts, RR: 2
Reply 1, posted (11 years 7 months 1 week 3 days 11 hours ago) and read 3883 times:

One tenth of an hour is 6 minutes.

Multiply the decimals by 60 to get minutes;

4.3 - 4 hours : (0.3 * 60) minutes
18
or 4 hours : (3 * 6) minutes

To get minutes into tenths, divide by 60-

115 minutes- 115/60= 1.9 hours.

I don't mean to insult, but this is about 4th grade math here.

- Mike



Happy contrails - I support B747Skipper and Jetguy
User currently offlineJSC_23 From New Zealand, joined Jul 2001, 223 posts, RR: 0
Reply 2, posted (11 years 7 months 1 week 3 days 6 hours ago) and read 3877 times:

You have deeply insulted me...but thanks anyway..so basically it's just dividing and multiplying by 60...

Regards
JSC_23



Be a realist...Remain a dreamer!
User currently offlineIllini_152 From United States of America, joined Jan 2001, 1000 posts, RR: 2
Reply 3, posted (11 years 7 months 1 week 2 days 23 hours ago) and read 3843 times:

I'm sorry, now that I look back at it, that last comment was really uncalled for. I just get surprised at our educational system these days. I went home the other day and my sister was allowed to use a calculator on her THIRD GRADE math tests. It seems they don't even teach kids how to do mental math anymore.

--
Mike



Happy contrails - I support B747Skipper and Jetguy
User currently offlineJSC_23 From New Zealand, joined Jul 2001, 223 posts, RR: 0
Reply 4, posted (11 years 7 months 1 week 2 days 17 hours ago) and read 3839 times:

No i was just kidding....i probably did learn it but i guess didn't know how to apply it...and i know what it's like since we started using a calculator at school i have become very lazy with mental math...anyway I don't really understand your grade system...how old would third grade be?

JSC_23



Be a realist...Remain a dreamer!
User currently offlineIllini_152 From United States of America, joined Jan 2001, 1000 posts, RR: 2
Reply 5, posted (11 years 7 months 1 week 2 days 8 hours ago) and read 3844 times:

hehe, I love how easy it is to display sarcasm over the internet. 3rd grade would, generally be 9 years old.

I think it helps if you have an intimate understanding of a slide rule. I don't mean knowing how to figure out your groundspeed on your E6-B, but understanding how it works; how al it does is setup ratios, and eventually you can do multiplication, division, and all kinds of other things with it. When it came time for my ground school lesson on it, I had a Marine C-130 navigator explain every nuiance of it, and it helped me not only get a better understanding of how to use an E6-B (well, I use a CR actually, but same concept) but how to better aproximate things in my head, It is something that has been sorely lacking in public education in the past 25 years, I've noticed.



--
Mike



Happy contrails - I support B747Skipper and Jetguy
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