How to draw a V-n Diagram?

[@preslavgeorgiev3372]

Thank you for the simple explanation!

[@omerkandemir2781]

Hi Andras, thank you for providing such a useful library. I do have one question regarding the limit maneouvering load factor. In CS-23.337 (a), this factor is dependent on the maximum take-off weight, so limit maneouvering load factor should not change with respect to current weight of the aircraft under investigation while the positive and negative stall lines vary with the current weight. In the code, it seems that the limit maneouvering load factor is calculated based on the provided weight given and weight fraction. Is it possible to adjust the code such that it takes the weight factor into account for stall lines but only the maximum take-off weight for the limit maneouvering load factors?

[@yaseen157]

Hi Omer, I am the developer of the ADRpy V-n diagram code. The limit manoeuvring load factor is indeed dependent on the maximum take-off weight. I disagree that the load factor should not change with respect to the current weight of the aircraft, but I agree that the limit load factor at MTOW should not change. If you disagree with this please do get in touch again and we can talk about it more, but I understood the regulations as follows: L = nW (lift force = load factor * weight at design point, for steady flight) Lift is a function of dynamic pressure, and weight changes with the "current" weight of the aircraft (at a certain design point). If the dynamic pressure is unchanged (as it would be for a given equivalent airspeed), the lift force does not change with weight (L@MTOW = L@designpoint), but the weight force does (W@MTOW = W@designpoint / weightfraction). The only way to resolve L=nW is to have the following be true: L = n * (W@MTOW * weightfraction) For a given lift force (at given flight conditions), the load factor must go up as the weight fraction of the design point decreases. The limit load factor does not change (that is defined by MTOW as you said), but the load factor to be considered does actually change with the weight fraction (in my interpretation). This is why the plotted load factors scale with weight fraction.

[@adithiyavikash4092]

hi how can I perform these but using speed in terms of m/s instead of KEAS