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So why this "physical resemblance"?

Have the engineers of the two Chinese missile groups, CASC and CASIC, "copied" again as the media try to repeat it - for lack of technical arguments and probably to remain "politically correct" and to please the Public hearings - or are there many special reasons because the physical laws are expressed in the same way for everyone living under the same sky?

The research paper " Design for aerodynamic configuration of a hypersonic axisymmetric maneuverable reentry vehicle ", written by the chief engineer of the DF-26 program, ZHU Guang Sheng (朱广生), which belongs to the CALT Institute, Be given some explanation on the choice of this technical configuration.

ZHU first outlined the needs of its study for a maneuverable atmospheric reentry vehicle, which must perform large mid- and high-altitude maneuvers, rapid low-level trajectory changes, and controllable adjustments in position and speed during Of the terminal approach phase.

For this, the machine must have the following characteristics:

Relatively large lift and high aerodynamic fineness
A small margin of static stability
Effective control of aerodynamic control surfaces
A sufficient internal working volume
Low load torque
A controllable descent speed

A ballistic missile with an optimum trajectory of 4,000 km reaches a speed of more than 5 km / s after its propelled phase, and nearly 3.8 km / s, a little more than Mach 11 at the apogee Of its course. The lift of such a hypersonic gear, at the time of its atmospheric re-entry, comes mainly from its body, and the aerodynamic fineness of its form. The control surfaces only serve to control. Thus, the aerodynamic shape of the atmospheric re-entry head must meet the needs of a large normal force and low axial force.

In order for the various sensors of the head to operate optimally, in particular in the case of an ASBM which combines the information coming from multiple sensors in order to be able to locate, identify and acquire its target, it requires that the descent speed be controllable. And the best way to regulate this velocity is by conical motion, that is, the velocity vector of the head rotates about its symmetrical axis.

And the form that meet all these criteria for such a head is precisely biconical. But the precise dimensions of this bi-cone so that the flight is optimum vary according to the speed of the craft, the mass, the barycentre and a set of parameters.

Not sure if these go here, but I noticed the game is missing these: https://en.wikipedia.org/wiki/Second_Ge ... rol_Vessel

ORIGINAL: miller7219

#1767 - 272 Gen. K. Pulaski [Perry] - 2000
#2414 - 272 Gen. K. Pulaski [Perry] - 2008

I was playing with the "You BREXIT, You Fix it!" LIVE scenario and was pleased to see the OH Perry ships the US sold (gave?) to Poland. Love the Perry class and miss them. Hope to see them continue springing up in smaller navies around the world to serve for 20-30 more years!

I noticed after reviewing the most current DB3000 Build 461 that the Pulaski entries don't include the following weapons on platform:

Mk15 Pkalanx Blk 0
SM1-MR Blk VIB
RGM-84D Harpoon IC

I said, OK, maybe the US removed these weapons prior to transfer to Poland, but after researching on the internet and reviewing post-transfer pictures of the 272 and 273 new hull numbers it appears they both were transferred and operate with all weapons intact.

Here's what is likely a reputable link that confirms that:

http://www.defenseindustrydaily.com/pol ... tes-07020/

You can do a google search and find dozens of post-transfer pictures and you can clearly see the iconic Mk15 Phalanx dome and Mk13 launcher is present on both 272 and 273 hulls. As a matter of fact, just check the pictures included with the community picture pack!