Search

Notices
Flight Schools and Training Ratings, building hours, airmanship, CFI topics

Aviation Math Formulas

Thread Tools
 
Search this Thread
 
Old 11-29-2007 | 09:40 AM
  #1  
9999's Avatar
Thread Starter
Gets Weekends Off
 
Joined: May 2006
Posts: 349
Likes: 0
Default Aviation Math Formulas

I remember seeing a site that had a list of various aviation math forumulas but am not able to locate it. Anyone have a link or know of a site like this that you wouldn't mind posting a link for?

Also, anyone know what the formula to compute the following problem is? I can compute it on a E6B but don't remember a formula.

If I have to maintain a climb gradient of 4.5% on takeoff and my ground speed is 119 kts during the climb, what would this compute to in feet per minute?

Things have gotten so automated for me that I am forgetting this stuff and need to get a review.

Thanks in advance to all who reply.
Reply
Old 11-29-2007 | 09:50 AM
  #2  
9999's Avatar
Thread Starter
Gets Weekends Off
 
Joined: May 2006
Posts: 349
Likes: 0
Default

G S X C G/60?

Last edited by 9999; 11-29-2007 at 09:56 AM.
Reply
Old 11-29-2007 | 01:55 PM
  #3  
Triumph's Avatar
Gets Weekends Off
 
Joined: Mar 2007
Posts: 348
Likes: 0
From: .
Default

119 4.5

119 = appox. 2 nm per minute

2 X 4.5 = 900 fpm appox.
Reply
Old 11-29-2007 | 02:21 PM
  #4  
Cubdriver's Avatar
Moderator
 
Joined: May 2006
Posts: 6,056
Likes: 0
From: ATP, CFI etc.
Default

I got 943 fpm using a calculator and basic trig. I solved for x which is climb rate, using tan (4.5 deg)= x /119 kts, then convert to fpm using the result times 6040 ft/ 60 min.

There is a pretty good website for aviation math here. It's hard to do math problems flying, and probably not advised, but this will help.

Last edited by Cubdriver; 11-29-2007 at 06:07 PM.
Reply
Old 11-29-2007 | 07:23 PM
  #5  
9999's Avatar
Thread Starter
Gets Weekends Off
 
Joined: May 2006
Posts: 349
Likes: 0
Default

Thanks folks. I appreciate it.
Reply
Old 12-04-2007 | 04:54 AM
  #6  
ctd57's Avatar
Gets Weekends Off
 
Joined: Mar 2006
Posts: 309
Likes: 0
From: CRJ CA
Default

Originally Posted by 9999
If I have to maintain a climb gradient of 4.5% on takeoff and my ground speed is 119 kts during the climb, what would this compute to in feet per minute?
Whatever the VSI says it is. I have never seen any question like this. I have only seen on departures where it says that you need to be able to climb X-number of feet per nm, and there is a chart that tells you what the minimum climb rate you need in order to achieve that. This just doesn't sound like a real world question, just one of those to see if you know those formulas that don't mean anything once you are flying the aircraft. Kind of like the formula to figure out many miles per minute you are flying at a certain mach speed.
Reply
Old 10-07-2009 | 05:34 PM
  #7  
atprn's Avatar
On Reserve
 
Joined: Apr 2006
Posts: 12
Likes: 0
From: LJ60 part 135
Default http://williams.best.vwh.net/avform.htm#Xwind

This site has lots of formulas
Aviation Formulary V1.44


Originally Posted by 9999
I remember seeing a site that had a list of various aviation math forumulas but am not able to locate it. Anyone have a link or know of a site like this that you wouldn't mind posting a link for?

Also, anyone know what the formula to compute the following problem is? I can compute it on a E6B but don't remember a formula.

If I have to maintain a climb gradient of 4.5% on takeoff and my ground speed is 119 kts during the climb, what would this compute to in feet per minute?

Things have gotten so automated for me that I am forgetting this stuff and need to get a review.

Thanks in advance to all who reply.
Reply
Old 10-08-2009 | 11:06 AM
  #8  
Line Holder
 
Joined: Dec 2008
Posts: 57
Likes: 0
From: Wrong
Default

Originally Posted by ctd57
Whatever the VSI says it is. I have never seen any question like this. I have only seen on departures where it says that you need to be able to climb X-number of feet per nm, and there is a chart that tells you what the minimum climb rate you need in order to achieve that. This just doesn't sound like a real world question, just one of those to see if you know those formulas that don't mean anything once you are flying the aircraft. Kind of like the formula to figure out many miles per minute you are flying at a certain mach speed.
That's what I automatically thought of, the climb gradient chart in the front of the NACO TERPS.

If I can find the link, I'll post it later.
Reply
Old 10-09-2009 | 10:56 AM
  #9  
ryan1234's Avatar
Gets Weekends Off
 
Joined: Jun 2008
Posts: 1,398
Likes: 0
From: USAF
Default

Call me a nerd, but I keep a little basic calculator on my kneeboard... I just find it faster than messing with a EA6B in flight. Mostly it's just basic formulas anyways.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
joel payne
Hangar Talk
10
12-12-2007 08:36 PM
joel payne
Hangar Talk
24
11-07-2007 06:24 PM
R1200RT
Cargo
1
07-25-2007 11:39 AM
vagabond
Hangar Talk
0
07-21-2007 07:49 PM
ChrisH
Regional
70
01-01-2006 06:22 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



Your Privacy Choices