An evidence of the rumor about the 300mm cannon carried by 5 axle special heavy-duty
truck (There is a outline for it, but I cannot find that image now): Aerodynamics simulation and characteristics analysis of extended range guided munition
I do not know anyone had post any relevant article, I did find it in this post. This article talk about a 300 mm rocket-assisted extended range guided munition, with the maximum uncontrolled range reaches 280 km, and the range of gliding flight with the maximum lift-to-drag ratio reaches 420km:
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- Simulation Conditions:
muzzle velocity: 700m/s
Weight of shell: 530 kg
Explosive load: 230 kg
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- maximum uncontrolled range: 280 km
"在文献[16]中,几种制导炮弹的最大射程为160km,相比之下,本文设计的制导炮弹射程明显增大,最大射程为420km。"
- the range of gliding flight with the maximum lift-to-drag ratio : 420km