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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References for lift and drag coeficient formula/values
I'm looking for references for values/formula for lift and drag coenficients. In this paper https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6244461 it is said that
$C_L(α)$ and $C_D(α)$ ...
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What is a "rapid changes in gravitational force"
I've been reading an article on the BBC Website about the 21/May/2024 incident on Singapore Airlines. According to this article:
"The rapid changes in G over the 4.6 seconds duration resulted in ...
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In a straight and level flight if thrust is equal to drag how is aircraft moving forward?
If two forces are equal and acting in opposite direction should not the object remain stationary.
Is there an excess thrust which actually pushes the aircraft forward ?
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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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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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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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Why is the wave drag of a straight wing less than that of a swept back wing?
According to NASA's claims, when the swept back wing is inside the shock cone and the shock is not attached to the leading edge of the wing(subsonic leading edge), the wave drag of the swept wing is ...
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Turbocharged vs Turboprop cruise altitudes
I know that both turbocharged & turboprop engines offer better performance above 10,000 feet than normally aspirated piston aircraft. My question is to what degree do their optimal cruise ...
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How to calculate fuel burn rate in Model BK117 helicopter
I am confused which parameters we are use, I have fuel quantity, fuel flow, fuel weight and speed etc is there so how to using and which parameters using the Endurance time calculate in helicopter
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Hexacopter Vn diagram/ flight envelope/ operational envelope
I am currently intern at a company. They are making agriculture hexacopter, now there is a confusion that does the hexacopter or multicopter have a V n diagram if yes how to make one what's the ...
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What causes the secondary effect of rudder, and which direction does it act?
I understand that rudder deflection causes several things to happen. Primarily the aircraft yaws, and for a positive (trailing edge left) rudder deflection there will be a positive side force ...
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How does the horizontal component of lift when flying at a bank angle cause the aircraft to follow a circular path?
I understand that when the aircraft is put into some bank angle, the lift vector now acts at that angle instead of directly against gravity, so we can pitch the aircraft up to increase AoA to increase ...
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Thrust needed to overcome parasite drag that increases with speed
Can anyone explain this passage from page 11-5 of the PHAK: “ For example, if an aircraft in a steady flight condition at 100 knots is then accelerated to 200 knots, the parasite drag becomes four ...
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Yawing during turns
This is a question about aeronautics. Does an airplane yaw while it is turning?
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Entry to back-side of power curve
When entering slow flight, when do we enter the back side of the power curve? Is it when we reduce the throttle or when the airspeed decreases to just above 5 knots from the stall speed?
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