![]() ![]() ![]() Burntime pulled out of a figure on the internet, no idea if that is correct. Impulse calculated as the product of fuel weight and an assumed 240 s specific impulse. Have no idea if the Phoenix has a boost and sustain phase or if it is a continuos burn so for the time being thrust is assumed constant at around Impulse/burntime = 18000 N. So with no solid data to go on I have assumed a drag area (Cdo x reference area) varying between 0.04-0.11 m**2 depending on missile Mach. Missile drag: Lacking solid data here this is tricky and since it is short stubby missile it is difficult to come up with a good estimate based on comparisons with other more slicker missiles. So, does anyone have more info or input that could help improve the simulation and shed some light on really long range missile intercepts? I have used open sources to come up with the following missile data for the AIM-54A: I have simply reverse engineered this so I have no idea if this is close to the IRL launch profile used to attain the range "in excess of 100 Nm" but the simulation certainly shows that it is within reason and in addition, my simulations indicate that with an even higher loft angle and higher launch speed the missile intercept can be moved out even further. One figure is true to scale and the other scaled up to improve reading of flight data. The scenario in the attached figures is a head to head engagement with a target doing M=0.67 at 10 Km which AFAIK is the cruise speed of the Tu-95 Bear and the F-14 doing M=1.4 with a launch distance of a little over 190 Km, i.e. I have over the years developed a C++ program that can calculate missile kinematics and lately I have fiddled around a bit with a AIM-54A model testing out different launch speeds, loft angles, missile aoa during flight, target speed etc and come up with the attached scenario which indicates that it is at least quite possible from a missile kinematics perspective: Open sources indicate that the Phoenix has a range in "excess of 100 Nm" which is quite extreme and one can wonder in what type of scenario this would be possible? ![]()
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