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

Here we look at the response of an Airplane in flight after it is subject to a disturbance. We see what is stability and types of Stability on an Aircraft.
We go more specific into Static Stability and look at the differences between Positive Static Stability; Negative Static Stability; Neutral Static Stability.
Then we see Positive Static Stability and its effect along the Longitudinal, Lateral and Yaw Axis.
A detailed discussion on Center of Pressure and Center of Gravity and the effect of moving the CP ahead and behind the CG; and why Horizontal Stabilizers are required.
We also see how the Vertical Stabilizer assists in Lateral Stability and the Directional Stability.

Hope you find it useful.
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Thank You.

[safafituri]

Finally someone made static stability understandable!! Thank you so much

[henninglaksholm]

Thanks man! I have an aerodynamics exam in 4 days, and this really helped.

[gnelpqlo]

The funny thing is, i was confused by these theories all semester but fortunately i found your video, a five-minute clip literally saved my life. I’m gonna make it A 😭

[Cadillac]

The most beautiful teaching method I've ever seen. 👍👍👍

[ddeakpeti]

When you introduce the 2 types of stabilities, it'd be nice to hear a short definition on the differences. (i.e. based on the time period that is analyzed. When talking about Static Stability, only the moment is investigated after the disturbance, while for Dynamic Stability the whole time period of the motion is carried out.)

Also, I'd show examples for a statically stable, neutral and unstable response in each case.
Hope you find it useful, pretty good elementary introduction in fact.

[chaudharymursalinsohail]

At 3:50..didnt he reverse the angle of attack of both wings?

[owenhobbs]

For lateral static stability, why does the downgoing wing increase in AoA? Isn't the chord in relation to the airflow the same regardless of the disturbance in roll?

[rinaldomilletti]

Best explanation I've seen well done, thank you Keep up the videos.

[asrul_hadi]

mantap la boss, great explanation about the aircraft stability

[deepankarmajumder]

Thanks a lot!!! Keep making more contents. Can you tell me which resources did you follow for Aircraft Stability?

[chrisgfly]

Great video. Think its the first time I really understood.

[pilot.sakshi]

Wow your explanation is the best one👍👍👍👍

[lipstickpilots]

Loved this video! Very clear and articulate!

[EnsanNormal]

Very nice simple explanation but there is a mistake @ 4:20. When the wind hits the plane from right the nose will turn to the direction of the wind which is in this case right.Because the wind will hit the vertical stabiliser which is located in the back of the plane from the right which makes the nose of the plane to move to the right

[ACM]

Very helpful thank you so much. Was there a reason that you omitted dihedral angle for the lateral stability?

[IvanAryandi]

Hello from Indonesia. Very useful here, Keep The Spirit !

[tef]

Good video just remember that it is not a matter of only altitude change here. For example, neutral longitudinal static stability does not mean the aircraft will maintain altitude of whatever the disturbance was but rather angle of attack. Therefore the altitude will continue to change. Whereas negative means it will change exponentially, and positive means it will return to stability (again, not necessarily the original altitude).

[MustafaAli-zthp]

your videos really helped me keep it up!

[elelyon]

Awesome explanation thank you! Really helped me to understand 😀👍🏼🙏🏼

[pilottadeus]

But all the kinds of static stability may be negative/neutral as well, right?