Questions tagged [flight-dynamics]
Flight dynamics is the study of the physics driving the performance, stability, and control of aircraft. It is concerned with how forces acting on the aircraft influence its speed, altitude and attitude with respect to time.
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Can I just differentiate my Euler rates to get the angular rates?
There is this matrix:
$${W_{\eta}}=\begin{bmatrix}
-\sin(\theta) & 0 & 1 \\
\cos(\theta) \sin(\phi) & \cos(\phi) & 0 \\
\cos(\theta) \cos(\phi) & -\sin(\phi) & 0
\end{bmatrix}$...
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First Boeing 757-200 N757A 'Catfish' was modified with a Canard foreplane. How did it behave?
The aircraft had these changes made around 2006 to act as an F-22 Avionics test bed. One would expect that the fore plane changed many performances of machine, including take off and landing attitude ...
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Doubt in the Coriolis component of the net force acting on the aircraft
I dig a little and got to know that the force equation in 6DOF are nothing but a mathematical depiction of the fact that for a translating & Rotating body in 3D,The net force is the Translational ...
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What are all the ways that wind velocity can affect a paraglider/ canopy before it touches the ground?
Let's assume that a "perfect" humanoid robot flying a ram air parafoil (paraglider or canopy) performs some maneuver for landing exactly the same way multiple times.
The only difference ...
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What can cause an unstable phugoid mode?
For clarity, I am wondering about how aircraft design can lead to the phugoid poles becoming complex with a positive real part, so an oscillation with increasing amplitudes.
My understanding of the ...
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How elevator and ailerons affect attack and roll angles?
I was trying to model the flight of an aircraft and i need some function that expresses the change of attack and roll angle in function of the elevator and ailerons (respectively).
Does anyone have an ...
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Does the reduced aerodynamic damping at higher altitudes affect the Vno (maneuvering speed) of an airplane?
Since reduced aerodynamic damping at higher altitudes reduces the needed control input for maneuvers, is this just about the required force to move the controls or also about the speed of the ...
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How do you compute the net lift force location?
There are a lot of formula that give an approximate solution to the lift and drag forces associated with certain wing configurations.
What I'm curious about is how do you find where the net force is ...
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Maximise Range Vs Pitching Down while flying a Glider in a Downward Air Mass
While flying a glider, if I encounter a downward moving air mass (i.e. sink) while on final, should I fly to maximise range (best lift to drag ratio) or should I pitch downward in order to exit the ...
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Does does turning into the wind increase airspeed and/or climb rate?
At 5:24 to 6:10 in the video linked below, Kelsey appears to be claiming that turning into the wind tends to create 1) an increase in airspeed and 2) and an increase in climb rate. Are either of ...
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What would happen to the aircraft and its control surfaces immediately after the loss of all hydraulics?
In cases like the DHL shoot-down in 2003 or the Sioux City crash, both aircraft lost all of their hydraulics because of a catastrophic failure of aircraft structure.
What would happen if the aircraft ...
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What is missing from these diagrams of the forces in slips and skids?
See these images that are widely reproduced in many different on-line ground school materials.
A) Is the magnitude of the wing's lift vector illustrated correctly in each of the three cases? Should ...
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