Calculating Stall Speed

Every airplane has a minimum speed at which it can fly - stall speed. Calculating this speed is easy using the expression for lift. Here's an example.

[@touhamikawther3240]

Thank you professor ! This channel definitely needs more recognition

[@purdueMET]

You're most welcome. I'm glad these videos are helpful.

[@teitgenengineering]

thanks for the great explanation and thanks for using metric.

[@Deshprem25.]

A millions of thanks sir... I was being wrong,,, because I didn't multiply 9.81 m/sec. square with weight. Thanks for my clarification

[@submarinemalen]

Excellent video

[@lucas.mendes]

Thank for using metric system!

[@nadinbu257]

thank you

[@purdueMET]

You're most welcome. More videos coming :-)

[@lameckkaniki2433]

Hello professor. How do you know which one is a suitable stall speed?

[@alianjohnson6035]

nice one thanks

[@purdueMET]

Glad you enjoyed it

[@ernestjesly]

Professor. I'm a new student. I have a doubt. Does the stall speed vary if the thrust changes. ?

[@teitgenengineering]

no.

[@adrianharcourt-cooke7204]

In practice it would. A stall usually occurs in a nose up attitude. Thus the vertical force of the thrust decreases the effective weight of the aircraft. Additionally, the slipstream from the propeller would increase airflow over the wings

[@jay.ostojic]

what is the 9.81 m/sec? where did that unit come from??

[@akbruh4265]

9.81 m/s^2 is the most commonly used value for the constant of gravity acceleration. In the vid, W is mass x grav. acceleration, thus the 9.81

[@jay.ostojic]

@@akbruh4265 ahhh okay makes sense. Thank you

[@abdiaklilu3386]

Awesome...

[@purdueMET]

Thanks very much :-)

[@ariffbasri]

let say I've wings stall speed of 100kmh with mauw of 1000 kg: if I change the mauw will I correctly get new stall speed? cheers prof

[@farxadalizade599]

👍👍👍👍👍