Think when you change a tire on your car. You have some type of wrench that gives you leverage on the nut. The distance from the nut, where you push on the wrench is the arm. Sometimes people extend the wrench with a hollow pipe....this extends the arm. How hard you push on the wrench is the force. How hard you push times the arm is the moment. Therefore, your strength is magnified when you lengthen the wrench (maybe with a pipe) because moment = force x arm
everything makes great sense however in the plane demo you assigned the empty weight of aircraft an arm of 28, my question is how and why? that marks a point behind pilot but IN front of all other weights, would it not be the center of aircraft in relation to the datum? couldn't you simply choose any nominal distance in this exercise and still be correct if not my suggestion?
@Chris Fillmore Keep in mind that there is significant weight in front of the datum for the aircraft in the example. The engine, nose gear and tire, propeller, etc. That factors into the empty weight and the total moment of all the arms and weights in front of and behind the datum.
Explaining some terminology here: 1. weight is the force exercised by any mass due to gravity - I think this is clear for anybody; 2. moment is the torque that appears when a force is applied at the end of a lever - consider this a "rotating effort" 3. arm is the distance from the fulcrum to the force application point, perpendicular per force direction, as all the forces here are due to gravity, the distance is horizontal
Thanks for the clear explanation. Everything just clicked.
That was of great help. You broke down the steps and the logic behind them. Many thanks 🙏❤️
Best explanation I’ve seen of W&B, thank you so much
One of the best videos for Weight and Balance ever made
If you were my instructor when I started I would have saved hundreds of dollars...
So very clearly explained
Love your teaching style and also the program that you are using to illustrate your teachings. THANKS! Nice Review!
Think when you change a tire on your car. You have some type of wrench that gives you leverage on the nut. The distance from the nut, where you push on the wrench is the arm. Sometimes people extend the wrench with a hollow pipe....this extends the arm. How hard you push on the wrench is the force. How hard you push times the arm is the moment. Therefore, your strength is magnified when you lengthen the wrench (maybe with a pipe) because moment = force x arm
Thanks for this video, got me out of trouble understanding it! ;)
Great information and presentation. Perfect. Many congrats!
Thanks Jeffrey, I'm an AGI and your video does an excellent job of simplifying the shifting W and B questions.
Steven David SEL, ASES, IFR Multi, COMM
Thank you so much! This helped a lot and I took notes as I followed along. Hope to pass my written soon!
You sound just like Harrison Wells from The Flash. Great video.
Nice video explanation. Broken down step by step. Thank you.
Thanks! This really helped! You got my like :D
My friend, you are awesome! Thank you!
Yes this was great
Great rundown!
Excellent video!
Thank you. This is a great video
very helpfull thank you. This concept is now clearer.
Enjoyed your video. Very good job.
HI Jefrrey! i Just want to say thank you!!
awesome video! thank you !
Honestly not as bad as I was expecting
Except video thank you very much
Thank you so much!
Thank you, good explaination
You are a legend.
Thank you!
everything makes great sense however in the plane demo you assigned the empty weight of aircraft an arm of 28, my question is how and why? that marks a point behind pilot but IN front of all other weights, would it not be the center of aircraft in relation to the datum? couldn't you simply choose any nominal distance in this exercise and still be correct if not my suggestion?
@Chris Fillmore Keep in mind that there is significant weight in front of the datum for the aircraft in the example. The engine, nose gear and tire, propeller, etc. That factors into the empty weight and the total moment of all the arms and weights in front of and behind the datum.
Excuse me! I don't know what is meaning ARM and Moment. could you please explain for meaning. Thank a lot.
Explaining some terminology here:
1. weight is the force exercised by any mass due to gravity - I think this is clear for anybody;
2. moment is the torque that appears when a force is applied at the end of a lever - consider this a "rotating effort"
3. arm is the distance from the fulcrum to the force application point, perpendicular per force direction, as all the forces here are due to gravity, the distance is horizontal
if snagglepuss was a pilot