That was an outstanding example of the effects of a long moment arm. You actually just cleared up a question I've had for quite some time. Thank you sir!
I'm a visual learner. I understand the facts, but sometimes I dont quite get WHY the facts are what they are. That doorhandle example was so simple and really made it click for me! Many thanks, Jason!
I was a little murky until you described the door. The door analogy/example was very instructive and much more concrete than the aircraft example. Made the concept very easy to understand. Thanks for the video!
Thank you for this video. I am without financing for my private. I have learned so much from your video entries. Thank you! I am 47 years old, but Forever young. God bless you.
Wow! That was, to me, a completely new way of looking at the CG issue. So much simpler than the hand waving I'd been doing with center of lift, resultants of vectors, etc. Thanks!
CG is not just about moment arms to give control authority to tail surfaces, but also about the leverage as it relates to other forces on the airframe, such as the center of pressure, neutral point, etc. For aerodynamic reasons, you want the CG to be forward of the center of lift, for stability. Even if you had adequate control surfaces to maneuver an aircraft with the CG aft of the center of lift, it would become more difficult to fly, the further aft it balanced, as you would be struggling to counter the forces that are acting to change the wing's angle of attack. You can kind of think of it as trying to push a trailer, rather than pulling it. The longer the arm between the hitch and the wheels, the harder it is to keep it straight while pushing it. An aircraft with the CG forward of the center of lift will be inherently more stable.
So glad you put out a video about C.G. ,... as an older Rusty Pilot I'm certainly not the kid I was at 28 when I started flying, ( '78 ) and I flew every month last summer in a nice 172... the but comes here..... I did weight & balance before I flew my first month and best I could come up with was a Forward C.G., plane flew FINE ...but... I did not get those clean break, stall horn blaring stalls and I really didn't want to spin the plane .....so... I'm a bit plane shy at this time , not sure if this summer I'll fly ... you have me thinking a lot about C.G. GREAT VIDEO.
I have had my private for years.... but became a "rusty pilot". I enrolled at our local FBO for ground school along with my son, my nephew, and another rusty pilot who I've know since I was a kid. I will be sure to tell the other students about this video. At ground school we are just starting and we are not to weight and balance yet but this is by far the best I've ever seen CG explained.
Great vid. I'm taking an aircraft maintenance course. I'm in the weight and balance section. C of G is called out and you best explained it. Thanks dude.
The video doesn't really talk about how CoG affects stability but about how it affects maneuverability. What is critical to understand when it comes to weight and balance is how different the airplane behaves if the CoG is forward or rear of the CP" center of pressure". CoG rear of the CP will make the plan statically instabable which is very dangerous. You shoudn't skip that very important part in a video like this!!!
Please make a video on the little things pilots tend to get wrong or use incorrectly... i.e. Correct use of flaps, trimming the plane, adjusting for wing etc. I've seen a lot of pilots get these fundamentals wrong. Thanks for the great videos.
Wow this guy is a great teacher very easy for somebody like myself who learns visually to understand in my professional life I work with trees and if a customer asked me what kind of tree this is and I said it's an aspen and you can tell that by the way that it is I wouldn't be helping them much but there's a lot of that flying around in the aviation community no pun intended when a person understands why something is so it is usually easier to understand why their taught to do something
The moment arm analogy wasn't quite right. As the CG moves aft, it gets closer to the neutral point. As this distance gets smaller, the elevator becomes more effective even though the distance from CG to elevator decreased.
Jason always explains things like he's talking to a 5 year old. And that's an amazing skill to have because as an instructor, your brand new private pilot student knows nothing.
Good explanation. I am also under the impression that an aft CG could create a situation where the elevator had insufficient authority to lower the nose if the aircraft stalled, essentially making the stall unrecoverable. Is that the case?
ranjrog I was thinking the the same. Even in a standard stall scenario if the CG is too far aft there would not be enough elevator authority to break the stall. An example of this would be the 747 crash in Afghanistan. The cargo shifted aft upon takeoff and the pilots did not have enough elevator authority to get the nose down.
I always thought center of gravity was compared to center of lift to ensure stable flight. But in a spin situation I can see how the distance between rudder and elevator to CoG would make a difference.
Hi Rahul! The center of pressure moves forward and backwards along an airfoil. I hope this helps! Please reach out to us at support@mzeroa.com if you need any further clarification!
Thanks for sharing Jason. It's definitely clear now, however, with the example you showed, it sounds that what was meant by the stabilization was narrowed down to the effect of the rudder with respect to the CoG. But how about stability with regards to roll and pitch movements, are they also affected by forward or aft CoG?
If u start with "CG more forward or more aft" u HAVE to always say, in relation to WHAT more foreward or aft, or else, u just waste the viewers´ time... In relation to the center of pressure, in relation to the middle of the chord, in relation to WHAT, for god´s sake... If u don´t bring things in relation to each other, u remain scientifically irrelevant.
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That was an outstanding example of the effects of a long moment arm. You actually just cleared up a question I've had for quite some time. Thank you sir!
Super!!! Glad you enjoyed it my friend!!
Detailed explanation may be followed on
ruclips.net/video/issipoi1VkY/видео.html
I'm a visual learner. I understand the facts, but sometimes I dont quite get WHY the facts are what they are. That doorhandle example was so simple and really made it click for me! Many thanks, Jason!
The door example was perfect thanks Jason!
I’m currently getting my CFI and that was the first time CG has actually made sense. Thank you!
I was a little murky until you described the door. The door analogy/example was very instructive and much more concrete than the aircraft example. Made the concept very easy to understand. Thanks for the video!
I have zero experience flying a plane and that example made perfect sense. Excellent video.
Thank you for this video. I am without financing for my private. I have learned so much from your video entries. Thank you! I am 47 years old, but Forever young. God bless you.
As a CFI applicant; mentioning that door analogy is something I can use in the classroom during my ground lessons. Excellent idea
Wow! That was, to me, a completely new way of looking at the CG issue. So much simpler than the hand waving I'd been doing with center of lift, resultants of vectors, etc. Thanks!
Thank you!!!
CG is not just about moment arms to give control authority to tail surfaces, but also about the leverage as it relates to other forces on the airframe, such as the center of pressure, neutral point, etc. For aerodynamic reasons, you want the CG to be forward of the center of lift, for stability. Even if you had adequate control surfaces to maneuver an aircraft with the CG aft of the center of lift, it would become more difficult to fly, the further aft it balanced, as you would be struggling to counter the forces that are acting to change the wing's angle of attack. You can kind of think of it as trying to push a trailer, rather than pulling it. The longer the arm between the hitch and the wheels, the harder it is to keep it straight while pushing it. An aircraft with the CG forward of the center of lift will be inherently more stable.
I've read books on aerodynamics and their explanation of lever arm was very complex. You made it so simple with the door example. Thank you.
Great to hear that helped! Thanks for your support!
I’m writing an essay on variable sweep wings and this was exactly the price of information I needed to clarify a source I found. Thank you!
So glad you put out a video about C.G. ,... as an older Rusty Pilot I'm certainly not the kid I was at 28 when I started flying, ( '78 ) and I flew every month last summer in a nice 172... the but comes here..... I did weight & balance before I flew my first month and best I could come up with was a Forward C.G., plane flew FINE ...but... I did not get those clean break, stall horn blaring stalls and I really didn't want to spin the plane .....so... I'm a bit plane shy at this time , not sure if this summer I'll fly ... you have me thinking a lot about C.G. GREAT VIDEO.
I have had my private for years.... but became a "rusty pilot". I enrolled at our local FBO for ground school along with my son, my nephew, and another rusty pilot who I've know since I was a kid. I will be sure to tell the other students about this video. At ground school we are just starting and we are not to weight and balance yet but this is by far the best I've ever seen CG explained.
Great vid. I'm taking an aircraft maintenance course. I'm in the weight and balance section. C of G is called out and you best explained it. Thanks dude.
Beautiful beautiful beautiful...I'm going in for my PPL exam and o just bettered my understanding of COG.. thanks
Hi Theo, glad it was helpful!
The video doesn't really talk about how CoG affects stability but about how it affects maneuverability.
What is critical to understand when it comes to weight and balance is how different the airplane behaves if the CoG is forward or rear of the CP" center of pressure". CoG rear of the CP will make the plan statically instabable which is very dangerous. You shoudn't skip that very important part in a video like this!!!
This is quite an amazing video, as well the example given to illustrate the CG was amazing. Keep up the good work.
Never thought of fulcrum in an airplane. Best explanation ever!!!
Thank you my friend!!!
Great explanation, really easy to understand and delivered with great confidence.
Everything explained by you is so much more easier.. Thank you so much God bless you.
Excellent video!!! I was struggling with this concept; and watching this video helped me understand and everything just clicked.
Excellent visualisation. Well made indeed, my good fellow.
Jason, just another excellent video! You are helping me enormous with getting my TK. Thank you so much! Keep up the job!
Glad to help, thanks for watching!
Please make a video on the little things pilots tend to get wrong or use incorrectly... i.e. Correct use of flaps, trimming the plane, adjusting for wing etc. I've seen a lot of pilots get these fundamentals wrong.
Thanks for the great videos.
Wow this guy is a great teacher very easy for somebody like myself who learns visually to understand in my professional life I work with trees and if a customer asked me what kind of tree this is and I said it's an aspen and you can tell that by the way that it is I wouldn't be helping them much but there's a lot of that flying around in the aviation community no pun intended when a person understands why something is so it is usually easier to understand why their taught to do something
Thank you for the great explanation. I actually learn this part better with this video. Great examples! God bless you 🙏🏽
You are the best brother!
Endless information with the most graceful way.
Love your videos.
Keep 'em coming!
Not only the rudder authority, but also the elevators in pitch authority.
Great explanation, nice work on these little videos they're very helpful. Thanks.
great video, especially the door knob/hinge analogy...
Awesome examples - simple and effective (the door handle) and very memorable. Thanks heaps
Glad it helped! Thanks for watching, Tenby!
Really good example about the door, thanks alot! Cheers
Glad it was helpful! Thanks for watching!
I don't know anything about aircraft and I don't even know how I ended up here, but this was a great explanation. Thanks.
Glad it was helpful! Thanks for watching, Gene!
..simple & clear .. tnx Jason
please keep posting videos this was a great explanation
Awesome! Glad it helped! Thanks for watching, Salah!
Great stuff...I finally understand the term “ARM”.
Chas
Perfect explanation !!!!
Thank you so much Jason !!!
Glad it helped! Thanks for watching, Ariel!
Thanks very much for this video! Such a practical explanation!
The moment arm analogy wasn't quite right. As the CG moves aft, it gets closer to the neutral point. As this distance gets smaller, the elevator becomes more effective even though the distance from CG to elevator decreased.
Amazing, I was just looking for exactly this.
Thank you!
Glad we could help!
Great analog Jason
Thank you
Glad it was helpful!
A very good explanation of the subject.... Thank you
Glad it was helpful!
Jason always explains things like he's talking to a 5 year old. And that's an amazing skill to have because as an instructor, your brand new private pilot student knows nothing.
Excellent explanation :)
that was really helpful. more lessons like this please.
Awesome thank you Jason !
WOW what a great example. thank you
Glad you liked it! Thanks for watching, Santiago!
Great example
I like your videos, you remind me of my CFI
thank you so much! such a simple and easy to follow explanation :D
Glad you enjoyed it!
Excellent analogy!
Good explanation. I am also under the impression that an aft CG could create a situation where the elevator had insufficient authority to lower the nose if the aircraft stalled, essentially making the stall unrecoverable. Is that the case?
ranjrog I was thinking the the same. Even in a standard stall scenario if the CG is too far aft there would not be enough elevator authority to break the stall. An example of this would be the 747 crash in Afghanistan. The cargo shifted aft upon takeoff and the pilots did not have enough elevator authority to get the nose down.
Absolutely it's not just the rudder but the elevator as well that loses authority
brilliant. like the doorhinge example
Great way of teaching ❤👏
awesome lesson thank you
Good stuff Jason. See you at Sun N Fun.
Great video!
Thank you for helping me understand these terms. Here is my Question Sir.
How is flight affected with a forward CG out of limits?
thanks for the video
Cool explanation.
Awesome very well explained
Do you guys have a video that goes into explaining static stability and the positive vs negative vs neutral?
Excellent! So well done. Thank you. Do you have a course for commercial rating study. ?
Yes, we do. Complete Private, Instrument, Commercial, and Fundamentals of Instruction.
very intresting facts! good video! thank youu!
Glad you enjoyed it! Thanks for watching!
that's powerfull man thank you !!
legendary vidoe
Thanks for watching!
cool. Thanks!
Suggests that a CG too far forward towards the nose will provide too much rudder authority, too much leverage. Is that correct?
I always thought center of gravity was compared to center of lift to ensure stable flight. But in a spin situation I can see how the distance between rudder and elevator to CoG would make a difference.
What does it mean if someone says CP moves forward and backward ?? Where is forward and backward ??
Hi Rahul! The center of pressure moves forward and backwards along an airfoil. I hope this helps! Please reach out to us at support@mzeroa.com if you need any further clarification!
Nice job.
Thanks for sharing Jason. It's definitely clear now, however, with the example you showed, it sounds that what was meant by the stabilization was narrowed down to the effect of the rudder with respect to the CoG. But how about stability with regards to roll and pitch movements, are they also affected by forward or aft CoG?
Thank you
Our pleasure! Thanks for watching!
Love it!
Thanks
But what are the good and bad of having the CG fow or aft?
What do you mean by to get leverage?
you are the best
Thanks for watching!
Thank you please make more videos
Absolutely!
Will m0a offer individual courses
How many flight hours does Jason have now? Just curious.
Awesome
I have the same learn to fly sign!!
Awesome! Thanks for watching, Adam!
Very nice pretty boi
who else looked at their door?
If u start with "CG more forward or more aft" u HAVE to always say, in relation to WHAT more foreward or aft, or else, u just waste the viewers´ time... In relation to the center of pressure, in relation to the middle of the chord, in relation to WHAT, for god´s sake... If u don´t bring things in relation to each other, u remain scientifically irrelevant.
Man i been reading and searching watching to understand this, and boom this really helps
Thanks
You’re welcome, thank you for tuning in!