Recent content by krihamm

Hi, I am trying to calculate the heat flow across the boundary of a solid cylinder. The cylinder is described by x^2 + y^2 ≤ 1, 1 ≤ z ≤ 4. The temperature at point (x,y,z) in a region containing the cylinder is T(x,y,z) = (x^2 + y^2)z. The thermal conductivity of the cylinder is 55. The...

Hi, When considering the drag coefficient of a rocket in transonic/supersonic flight, I always expected the drag coefficient to peak at exactly Mach 1 due to the abrupt increase in pressure that occurs when breaking the sound barrier. However, I have been looking at several websites and...

Yeah, that's what I meant. My bad for not clarifying horizontal vs vertical speed.

I was referring to when you said that the conventional drag lift expression does not apply for high speeds, the rest was my attempt at conclusions :biggrin: Thank you for your help!

So the variations of the lift coefficient vs Mach number a rocket experiences is only due to the conventional lift coefficient expression not being valid for supersonic speeds (as you mentioned above)? https://history.nasa.gov/SP-468/ch5-2.htm

Independent of speed in what way? The speed squared is included in the denominator, so surely the lift coefficient is heavily dependent on speed?

Correct and correct. I am running simulations on such a rocket that utilizes high speed numerics, so assuming the estimations of the drag coefficients are correct, would the method mentioned above be correct to get the derivative of the lift coefficient with respect to incidence angle as a...

Thank your for your reply! Follow-up question: If I want to calculate the derivative of the lift coefficient with respect to incidence angle, and then plot the derivative as a function of speed - how do I proceed? Just calculate the lift coefficient for two arbitrary angles at a fixed speed...

Hi, I am looking into aerodynamic parameters for rockets (ogive nose, cylindrical body of different diameters, four fins at bottom) and have a question about the lift coefficient. If a rocket is launched vertically, with zero incidence angle and wind, would that result in a very small lift...