I always find explanations with drawings makes it really clear for people, so excelent tutorial im sure it has clearrd things for new or trainie pilots.
Fantastic video. Clear and easy to follow. One comment, the units are expressed incorrectly: Moment and torque use in*lbs (commonly expressed as in-lbs), not in/lbs.
Thank you so much for this brother, this is very helpful, its good that at the start, you gave an analogy that helped me understand better. Thankyou so much, May GOD Bless you brother.
It's best to do a calculation at empty fuel too. To make sure the cg remains in the envelope. It can happen where it doesn't and you don't want to be out of cg tolerance upon landing. At least get a good idea of what way you will likely to be with your service fuel used, , tail or nose heavy upon landing.
Calculate how much fuel you will burn during flight and redo the weight and balance calculation with what you estimate to have on board when you will be landing
this might help me build my 747 in a game thanks a lot! and when i grow up i do want to be a pilot. :) so i might get Microsoft flight simulator 2020 or X plane 11
I'm building an experimental cub and I'm wondering how manufacturers determine the datum location as well as the utility and normal area on the chart. Can you do a video on calculating all that?
I think the datum location has no real effect on any calculations aside from convenience. A datum from where measuring distances would be easy would be quite smart however I have no experience in aircraft engineering and if I'm wrong in any way please do let me know
I chose to do a Cessna 140 for class and I cannot figure out what I am doing wrong with how small the range is. Can you do a video on the Cessna 140? Thank you.
What if you have a warbird like I own and there are no charts or graphs like in this video to see if you are loaded correctly? I have all of the numbers like ARM & Moment but I dont have a graph to see if loading is correct.
Moment is torque exerted at the datum? So if we lift up the aircraft, not at the CG but at the datum, it would fall tail heavy, is this the moment in the empty weight moment stated in the manual?
That's not found in the POH or the operating manual. The basic empty weight arm CG number and information will be on the official Weight and Balance measurement/calculation sheet for your specific airplane. They are different for every aircraft and is calculated by an A&P when equipment is added or removed. The aircraft manufacture will could also supply this when it's newly built. In the AROW acronym, for required documents needed to have onboard, this is the "W".
Great Video! The only part you lost me on was how you found the Arm for the Fuel and Empty Plane weight... (I believe you used 38.2 for the plane and 48 for the fuel). I did not see those on the paper to the right of the equation anywhere. Thanks for you time and support (It helps all of us to become better pilots).
Remember all A/C are designed to have a nose heavy cg in flight...why...because if the A/C is stalled for any reason, the nose will drop and if you have enough altitude then you can recover from a stall and fly away. If the nose did not automatically drop, you probably would not be able to recover! If your A/C weights for example 2,683 lbs on the ground, then in flight the wings would have to produce enough lift to support 2,683 lbs plus the balance force to keep the nose up force in flight...lets say that is 127 lbs...so in flight the wings would have to produce 2,683+127=2,810 lbs of lift to maintain level flight. Your A/C will always need to produce more lift than the A/C weighs to fly...that is the cost of the safety feature which would allow the A/C to recover from a stall. To minimize this effect...try to load you A/C to the Aft limits of your Wt & Balance envelope! This will give you the best performance, least drag, and best fuel economy for any given flight weight.
I had known that there was a lot of math and science in airplane flight which this weight and balance concepts makes all kinds of sense now. (GOOD to know), But my brain cells were being burned away trying to figure out or at least find the math on (the weight of the plane, at full capacity) and trying to figure out how much horsepower/lift pounds an engine has to be to ensure stable flight and ensure good climb/rise/acceleration with power to spare. Are the principles the same for airplanes and helicopters.
5:34 your vertical red line is off... It should be a bit further to the right at around the 112.8 mark... in the video you have it on the 103 foot pound mark... which is not good to go, you're outside of the envelope. Lol.
Sure. One passenger leaning to see out the window or into the back to fish something out of a suitcase could change the moment by more than 7in-lbs. It adds a bit of margin too. I doubt the pilot and passenger are exactly 300 lbs. Probably the only time you would want to be super precise is in some kind of emergency or something where you _must_ pack your plane full and are pushing the envelope.
Sir,i am stupid so i cant understand this. What is moment and arm. And why is there 300 lbs x-12 =-3600in/lbs I want to build mini glider plane,that will last long in air,sir could you help me or anyone else? I need this in details
No, it is not obvious to me how they came up with 12.6 and you got 10.1 from the graph. That is the part that is blowing my mind. How do you come up with such precise decimal points from such an obscure graph. I am more apt to say 12.5 and 10 even from looking at the graph. How do you come up with 12.6 exactly and 10.1 exactly?
I never understand why they use the word " moment". Moment is arm? Why dont they just say arm then. Moment is such an odd and to me inappropriate word.
I've been struggling with weight and balance my entire training and in 10 minutes it all just clicked. Great explanation with the visuals!
Glad it helped! Be sure to share our channel and site with your flying friends!!!
For further clarification you may watch
ruclips.net/video/issipoi1VkY/видео.html
Check out this video for detailed explanation
Weight and balance of Aircraft and CG Calculation
ruclips.net/video/issipoi1VkY/видео.html
I watched 5 videos on weight and balance including King's explanation. Yours was the most straight forward for me. Good job!
Glad it helps! be sure to share us with your friends around the airport and on FB!
Thanks sir
This vid on weight and balance is by far, hands down the best and easy to understand that I have seen. Many kudos my friend.
Short and straightforward great explanation, thank you.
Definitely happy to help!
The best video i've ever seen so far about weight and balance, thanks you so much to uploaded
*SO HELPFUL I'm studying for my written and I was struggling with the weight shift formula the most! thank you* :)
This is the best video to watch for understanding C.G calculations.. this is absolutely amazing 👏
On the chart with weight and load moment your vertical line doesn’t line up with 112.8 for the moment. Time(5:32) Or am I reading it wrong?
Beautifully simple. Thank you
Always happy to assist!
This is so beautifully explained thankyou!keep going!
Thank you very much I was confused until I watched you’re video your a life saver!
Glad it helped!
Thank you so much, am going trough weight and balance right now and this helped me a lot
Probably one of the most boring and difficult (to start with) parts to understand from flight training.
I love your videos!!!...clearly understood!
This video is very helpful, Thank you!!
Glad it was helpful!
Refreshing. Thanks for making it easy.
Glad it helped ya!!
I always find explanations with drawings makes it really clear for people, so excelent tutorial im sure it has clearrd things for new or trainie pilots.
Thank you so much for this video. Trying to figure this out on my own wasn’t working. This was extremely helpful. Safe flying.
Thank you for this! Helped explain the calculations so much better!
Excellent explanation!
Great explanation and great visuals! Amazing explanations bravo, bravo.
Glad you liked it!
great explanation of weight and balance. thank you. fly safe.
Thanks! Have fun out there!
I agree with all the comments below. Well done!
Fantastic video. Clear and easy to follow.
One comment, the units are expressed incorrectly: Moment and torque use in*lbs (commonly expressed as in-lbs), not in/lbs.
Nice one .. I am going back to flying after a 21 yr brake and have a lot to catch up on and refresh .I find your videos a good help..
I'm glad they're helping.. Best of luck to ya!
I never comment on videos but this is amazing! Your videos are SO helpful, thank you for posting!!
Of course! Always happy to assist
This helped me a lot more than I did with king school. I do think king school is good but it’s great to supplement these videos to help understand.
i agree this helped me better than the other online ground school i was using.
Do you have a video that explains the weight shift formula??
I understood in 10 minutes what I struggled to understand with my instructor in 2 hours yesterday, very useful!
You may clarify further watching
ruclips.net/video/issipoi1VkY/видео.html
Thank you so much! I got it know.
Great explanation! Thank you!
Thank you so much for this brother, this is very helpful, its good that at the start, you gave an analogy that helped me understand better. Thankyou so much, May GOD Bless you brother.
you are a absolute life saver!!!
Thank you for this video! Really helped me out of struggling with these things!
Very clear explanation. Thank you.
Awesome video!
Awesome explanation!
Great vid
Excellent! Thank you!
Of course, glad it helped!!
Hi! Where did you get the arm of 48 in the fuel?
Wow good explanation~! Thank you, sir
It's best to do a calculation at empty fuel too. To make sure the cg remains in the envelope. It can happen where it doesn't and you don't want to be out of cg tolerance upon landing. At least get a good idea of what way you will likely to be with your service fuel used, , tail or nose heavy upon landing.
Thank you so much my problem is solved
Love the Hemi engine in the cartoon!
i don’t understand for longtimes but this video can help me in 10mn. thank you so much
I'm glad it helped ya!
Awesome vid! Great refresher!
Awesome 👌
Great Video
Thanks Alex!!
Thanks for explaining Wt/Bal in a common sense approach. Up until this point I was a little confused by the terms employed.
Amazing video!!!
Thanks! Fly safe!
Do you have a demo for planning the end of flight CG? How do you calculate to make sure you will remain in CG?
Calculate how much fuel you will burn during flight and redo the weight and balance calculation with what you estimate to have on board when you will be landing
this might help me build my 747 in a game thanks a lot! and when i grow up i do want to be a pilot. :) so i might get Microsoft flight simulator 2020 or X plane 11
Ty for explaining
Thank you, excellent explanation, but what is the empty weight, how do I get it, and where is his arm?
Thank you
I really liked the video and it uncovered a question: Will the airplane be tail heavy or nose heavy if the COG you measured is behind the wings?
Very nicely done; certainly one the best vids on the topic I’ve seen. (not sure I’d say “fat friend” in your example), but nicely put together!
😊
I'm building an experimental cub and I'm wondering how manufacturers determine the datum location as well as the utility and normal area on the chart. Can you do a video on calculating all that?
I think the datum location has no real effect on any calculations aside from convenience. A datum from where measuring distances would be easy would be quite smart however I have no experience in aircraft engineering and if I'm wrong in any way please do let me know
Thank you, John for the help! I’m getting ready to take my test 11/7/22
Best of luck!
How did your exam go
I chose to do a Cessna 140 for class and I cannot figure out what I am doing wrong with how small the range is. Can you do a video on the Cessna 140? Thank you.
5:33 There's an error here. Total moment is 112.8 which doesn't align with your plot on the right.
What if you have a warbird like I own and there are no charts or graphs like in this video to see if you are loaded correctly? I have all of the numbers like ARM & Moment but I dont have a graph to see if loading is correct.
we calculate with the MASS no more weight - the Greek Letter DELTA is the change of the value of the CG MOMENT CAL
Moment is torque exerted at the datum? So if we lift up the aircraft, not at the CG but at the datum, it would fall tail heavy, is this the moment in the empty weight moment stated in the manual?
What is the value of each squares and little lines?
very helpful
How do you figure out the arm length when it’s not in the Equation ?
Hope this works and that I finally … “get it!”
(Just as soon as I find time to focus and watch)
can you give an example on how calculate Stabillizer base on AMh560
Where in the POH does it give the basic empty weight ARM? C172?
That's not found in the POH or the operating manual. The basic empty weight arm CG number and information will be on the official Weight and Balance measurement/calculation sheet for your specific airplane. They are different for every aircraft and is calculated by an A&P when equipment is added or removed. The aircraft manufacture will could also supply this when it's newly built. In the AROW acronym, for required documents needed to have onboard, this is the "W".
amazing tysm
But why don't we put the datum where the CG is?
Thank you sir, but i want to know one thing, ok we get maximum weight and max movement, why this movement is safe
Whats the formula if the passenger gets out of the airplane? ( change in weight).
Isn’t the fulcrum the actual CG and not the wings?
Great Video! The only part you lost me on was how you found the Arm for the Fuel and Empty Plane weight... (I believe you used 38.2 for the plane and 48 for the fuel). I did not see those on the paper to the right of the equation anywhere. Thanks for you time and support (It helps all of us to become better pilots).
It will be listed in the POH or MX logs
What if the center of gravity of the aircraft is at the datum, would there be an empty weight moment?
The datum is just a measuring point. When the empty CG is calculated you get a measurement from the datum point for that as well.
Remember all A/C are designed to have a nose heavy cg in flight...why...because if the A/C is stalled for any reason, the nose will drop and if you have enough altitude then you can recover from a stall and fly away. If the nose did not automatically drop, you probably would not be able to recover!
If your A/C weights for example 2,683 lbs on the ground, then in flight the wings would have to produce enough lift to support 2,683 lbs plus the balance force to keep the nose up force in flight...lets say that is 127 lbs...so in flight the wings would have to produce 2,683+127=2,810 lbs of lift to maintain level flight. Your A/C will always need to produce more lift than the A/C weighs to fly...that is the cost of the safety feature which would allow the A/C to recover from a stall.
To minimize this effect...try to load you A/C to the Aft limits of your Wt & Balance envelope! This will give you the best performance, least drag, and best fuel economy for any given flight weight.
Larry Ehrlich Even a tail dragged aircraft? Their cg is aft of pilot.
Thanks for this video! I appreciated the fat friend reference, we all have one of those friends.
I had known that there was a lot of math and science in airplane flight which this weight and balance concepts makes all kinds of sense now. (GOOD to know), But my brain cells were being burned away trying to figure out or at least find the math on (the weight of the plane, at full capacity) and trying to figure out how much horsepower/lift pounds an engine has to be to ensure stable flight and ensure good climb/rise/acceleration with power to spare. Are the principles the same for airplanes and helicopters.
Please make more videos maybe on sheet metal
I'll add it to the list!
Is there ever a scenario where you would need to add weight before flying to counter the weight lost due to fuel burn?
In theory, yes, especially if you're on the cusp of being out of the CG limit envelope.
😊
Why does an aircraft have an empty weight moment?
5:34 your vertical red line is off... It should be a bit further to the right at around the 112.8 mark... in the video you have it on the 103 foot pound mark... which is not good to go, you're outside of the envelope. Lol.
That math is wrong there with 1642x38,12= 62593,04 Can you do that ? I mean round to numbers ?
Sure. One passenger leaning to see out the window or into the back to fish something out of a suitcase could change the moment by more than 7in-lbs. It adds a bit of margin too. I doubt the pilot and passenger are exactly 300 lbs. Probably the only time you would want to be super precise is in some kind of emergency or something where you _must_ pack your plane full and are pushing the envelope.
I'm really struggling with W&B and navigation math was never my strong suit
what if your friend is just heavier than you? does that mean they are fat?
Sir more videos upload for helicopter weight belence
Sir,i am stupid so i cant understand this.
What is moment and arm.
And why is there 300 lbs x-12 =-3600in/lbs
I want to build mini glider plane,that will last long in air,sir could you help me or anyone else?
I need this in details
ñawaaa wa japun ko kasabot!!! bugo na gyud kooo😫😖😖😖
What if you have a female passenger and you don't want to ask her weight?
FLY8MA.com Flight Training Lol, right on, no more PC 😎
I was the fat friend you referred to on the see saw
No, it is not obvious to me how they came up with 12.6 and you got 10.1 from the graph. That is the part that is blowing my mind. How do you come up with such precise decimal points from such an obscure graph. I am more apt to say 12.5 and 10 even from looking at the graph. How do you come up with 12.6 exactly and 10.1 exactly?
2NOT2 _ He probably did the math. There is no way an eye can distinguish such small differences, unless you have a big graph.
Omg. The realization that I *am* the fat friend.
This is more usthan the schooling instruction
Where are these 100lb pilots you speak of?!? =P
A “fat childhood friend”? It was baby fat and I liked pizza!
why does sportys make this so complicated
For detailed explanation watch
ruclips.net/video/issipoi1VkY/видео.html
I never understand why they use the word " moment". Moment is arm?
Why dont they just say arm then.
Moment is such an odd and to me inappropriate word.