Understanding Airplane's Longitudinal, Lateral & Directional Stability and the Need for Stabilizers! 

Cool! There is a video on Dynamic Stability also if you are interested!

Welcome and All the Best! :)

I have one tomorrow

u failed ur last one?

@@sencegame8685 No this was my first try.

How was the exam?

Wow, thank you!

Thank you too! Please Share and Watch my other videos as well

Glad it helped! Check out my other videos as well!

Glad it was helpful!

lateral stability cintrol by aileron @@JxJAVIATION

Thank You! & Welcome! Check out my other videos as well!

Thank you for the feedback. Creating a separate video for Dynamic Stability so I did not include that concept in this video.

Glad to hear it!

Thank you! That's great. Check out my other videos as well!

You're welcome!

Most welcome!

Glad it was helpful! Cheers!

Glad it helped!

You are welcome!

Glad it helped :)

Hi I am AUTOMATION Engineer, can we collaborate in our research, please?

You are welcome!

You are Welcome!

Hi I am AUTOMATION Engineer, can we collaborate in our research, please?

Thank you! Check out my other video as well!

Thank you so much :)

Thank you! Check out my other videos as well!

Glad you liked it!

Thanks and welcome!

Made a separate video on dynamic stability, which is why I omitted it.

Thank you. Check out my other videos as well!

Glad it was helpful!

Hi I am AUTOMATION Engineer, can we collaborate in our research, please?

Hello & THANK YOU! Do Watch my other videos as well!

Hi I am AUTOMATION Engineer, can we collaborate in our research, please?

@@perceptronsaber4479 Hello, Sure. Sorry For Late Reply. My Email : qqqivanvvv@gmail.com

Welcome! I used books by Clancy and JD Anderson and a few research papers

Thanks for your reply

Thank you! Do check out my other videos as well! All the Best!

You are welcome!

Hi I am AUTOMATION Engineer, can we collaborate in our research, please?

@@perceptronsaber4479 Hi. Thanks for the message. I am not designing. I kite surfing using hydrofoils and have options of wing and stabilizers to use and also can change angle of attack with shims. I don’t do any designing myself, just a user. So sorry collaborating with me will not be helpful. Regards.

@@irf888 You are welcome

Welcome! Check out my other videos as well! :)

Thank you!

Thanks! Check out my other videos as well!

You are welcome!

Most welcome! Check out my other videos as well! :)

Welcome mate!

Thank you for the input! Do check out my other videos as well!

Glad it helped!:)

Welcome!

If we look at the local airflow on the downgoing wing, it would seem like an increase in the AoA, which causes an increase in the lift.

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The downgoing wing experiences an increase in AoA because of this movement. This causes an increase in lift.

The tail is a vertical surface, so any disturbance in roll or yaw cause the tail's vertical area to move into the disturbance, causing an increase in the drag!

I think you are talking about the horizontal stabilizer. The image depicts the forces acting on the aircraft during straight and level flight.

@@JxJAVIATION can you please make a video on spin stall, Its clear that spin stall occurs because of presence of yaw during a stall, but I am trying to find the effects of the fuselage on the rearward wing stall during the formation of spin

@@NextGenMecs You could watch my video on Dynamic Stability where I discussed a little about it. But I will note down this topic for making video!

This would be true if the aircraft is stationary. But if the aircraft is moving forward, if wind hits the aircraft, it will hit the nose of the aircraft initially which will cause the aircraft to yaw towards the left!

Hi I am AUTOMATION Engineer, can we collaborate in our research, please?

noted!! Will try to create a video on this soon!

Yes has positive, negative and neutral

Yes! Thanks for clarifying!

Opposite to what the wings do

Guess that person missed the video!

they knew that, thats why they had the MCAS.

wing sweep also has some contribution towards the directional stability

@@JxJAVIATION and dihedral/anhedral?? (BTW I know the answers)

@@davidinnes8754 I have made a separate video on dihedral and anhedral wings which you could watch.

Yes that is correct! The Weathercock effect!

As the wing goes down it feels like an increase in Angle of Attack with the incoming air, which causes an increase in lift!

@@JxJAVIATION couldn't get it

@@JxJAVIATION it must be reverse I think

u need to go back to kindergarten to understand this

it is a combination of both!

The aircraft design has a direct impact on the stability!

From India!

@@JxJAVIATION oh wow! keep making such informative and beautiful videos for us🥰🥰

@@Pilot.sakshi That's the Plan! Check out some of my other videos as well!

The basic mechanical design is available on all the aircraft. Modifications are done on it to improve the aircraft stability

@@JxJAVIATION There have been some aircraft which are not stable per mechanical design .

@@davidinnes8754 these would be aircraft that are required to perform severe maneuvers.

Well I didn't make a pdf for the topics

@@JxJAVIATION from next video plzz provide for that will help in our semester exam plzzzzz

Haha! Guess he does!

I have uploaded a video on Trimmable Horizontal Stabilizer which could be useful for you!

@@JxJAVIATION ❤❤🤝

Well, the video is just a visual representation of the concept of different types of stabilities applied on an aircraft. Practically speaking, how far would you design the tail plane. In a normal aircraft design, the tail is majorly responsible for creating a downward force.

The tailplane must be used to produce downward force only if the CP of the wing is behind the CG. As you said, the CP moves as a function of angle of attack. The best way of explaining longitudinal static stability is to start with the neutral point (NP). There is a tail off neutral point, and a tail on neutral point. Starting with the tail off neutral point, it is the axis perpendicular to the plane of symmetry where there is no change in pitch moment with change of angle of attack. But wings have camber, so at zero lift, there is inevitable a nose-down pitching moment about the tail-off NP. If the CG is ahead of the NP, the lift will produce more nose-down pitching moment about the CG as the angle of attack is increased. Adding a tailplane shifts the NP aft, because the tailplane produces nose down pitch moment as the angle of attack increases and negative pitch moment as the angle of attack decreases. How far the tail-on NP is behind the tail-off NP is determined by the tailplane volume ratio (gatepathshala.com/pdf/download/conceptoftailvolumestosizehorizontalandverticaltails.pdf). With a high tailplane volume ratio, at low angles of attack, the tailplane is not unlikely to lift. I remember my own surprise when one of my colleagues in the Aerodynamis Office at Hawker Siddeley Aviation, Kingston, first pointed this out to me in the 1970's. (He was in the loads and stores section which was responsible for determining the range of aerodynamic loads on the aircraft structure, and the aircraft was the Hawk trainer; I was a Flight Dynamicist). @@JxJAVIATION

Apologies for that!

I do a lot of research before creating the videos. Perhaps you could explain what is incorrect in this video instead of posting such statements!

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Please explain!