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Topic Title: Inertial force for a descending plane
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Created On: 04 October 2010 09:29 PM
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 04 October 2010 09:29 PM
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Posts: 6
Joined: 12 October 2007


Forgive my ignorance, but I've got a small issue to think about and would like to consult with someone more intelligent. Namely - inertial force for a descending plane. Let's assume, that a 80-ton plane is descending during landing procedure with the vertical speed 11 m/s and a pilot wants to rapidly level the flight trajectory. Let's assume that he is able to do in one second, what means that the plane stops descending and levels the trajectory in 11 meters (let's leave for a moment feasibility of such manoeuvre aside). That gives us nice vertical deceleration 11 m/s^2 and therefore 1.1 G(x)-force (g = 11/9.81). Accordingly, inertial force (F =-(ma)) to overcome with such manoeuvre would be 8800000 N or 8800 kN what leads to conclusion, that the generated by the plane lift should have this enormous value. In this simply calculation I don't take into account all stuff as lift-drag ratio, aerodynamic drag and so on. Is this calculation correct, or I'm going haywire?


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