Who's Online

We have 1329 guests online

Live Traffic Feed

Life in the Skies

'A Local Bestseller!'

What Tony says
(See here)
and Book Launch video here
 
What others say

Les Posen
(See
here)

Yvonne Lee
(See
here)

Louisa Lim & Allan Koay
(See
here)

Aireen Omar, Asran & Bo Lingam
(See
here)

38 Readers' Comments
(See here)

Get an autographed copy here

AMAZON.COM  -  To Order, please Click here 

(eBook) Kindle edition - please Click here

Latest Comment

Thunderstorms and th
Hi Captain Lim, I would like to know if there ha

What happens if I ge
I have seen a comment from a Flight attendant that

What are the eyesigh
Captain, I am in class 11 in India and want to bec

What are the eyesigh
PLEASE stop asking about your eyes!!! Read the art

Vomiting on long hau
I have traveled a lot (almost 2 million miles) the

Can you become an ai
Hi captain , I had an accident 15 yrs ago and ha

Does a jet aircraft
Reading through the comments was both entertaining

Does a jet aircraft
So many nonsense here... Earth isn't flat. Period.

What are the cruisin
"how in the hell can you reach JFK if you leave fr

What are the eyesigh
tjsoihsdojfsioufs f post

Paperback Version

 For Local Availability - Check Here
 
Home > Contrails > Can I find out how long the contrail is?
Can I find out how long the contrail is?
Weather - Contrails
Monday, 24 September 2007 04:48

Dear Captain Lim,

I live in an area where I can see jets with vapor for quite some time. It appears that the flights are cross country and as such are at maximum heights.

It is possible for me to observe a flight for more than four minutes?

Can you help me determine how much ground mileage is covered if I use a stop watch when I first observe the plane and when I stop the watch after I can no longer see it?

Thanks for your help and your web site is sharp.

Frank,
Aged 65, and new to the computer

Hi Frank,

The proper name for the vapor created by the jets is known as contrail or condensation trail. (See
here).

Of course, you can observe the jet with the contrail for more than 4 minutes if the environmental conditions in the clear sky are present.

You can also determine how much mileage is covered by using your stop watch if only you know the jetliner that is creating the contrail.

As a rule of thumb, the following 4 planes can fly at these speeds:-

Boeing 747 - 8.5 miles per minute
Boeing 777 - 8.4 miles per minute
Airbus A330 - 8.2 miles per minute
Airbus A320 ?-7.8 miles per minute

So, a Boeing 747 will cover 34 (8.5 x 4) nautical miles in four minutes if you could precisely time the duration of the vapor. Those 34 "ground" mileages (nautical miles) would be the length of the so-called "vapor trail".

Again, if you could record another contrail created by an Airbus A330 as 10 minutes, the contrail would be 82 (8.2 X 10) nautical miles long.

Have fun chasing the contrails! :-)

Trackback(0)

TrackBack URI for this entry

Comments (0)

Subscribe to this comment's feed

Write comment

smaller | bigger

busy
 

Paperback Version

 For Local Availability - Check Here

Recommended By..


LIFE IN THE SKIES

'A Local Bestseller!'

Recommended by

Patrick Smith
Boston USA
(See
here)

Capt Meryl Getline
ex-United Airlines USA
(See
here)

Capt Doug Morris
Canadian Airlines
(See
here)

Capt  Robert J Boser
ex-United Airlines USA
(See
here)

38 Readers' Comments
(See here)

Get an autographed copy here

AMAZON.COM  -  To Order, please Click here 

(eBook) Kindle edition - please Click here

View Book Launch video here

Follow me

@CaptKHLim

Like What You Read?


If you like what you read, more stories are found in my book LIFE IN THE SKIES (Preview here) and you can purchase a copy here. To check for any latest updates or postings, you can follow my Twitter at @CaptKHLim or Facebook here

MH 370 Interviews

Click here to View

10 Most Popular Posts



Disclaimer | Privacy
2004 - 2011 © AskCaptainLim.com | Site Concept by eQuilec.com