Well how do we know it becomes inaccurate? Aren't unguided rocket projectiles inaccurate anyway. At a particular angle, they are expected to travel particular distances. Isn't that same for Indian smerch and pinaka?
I have provided a simple explanation of why unguided rocket or self powered projectiles are inaccurate Compare to Artillery guns.
If you want to go into details then there are factors like exhaust bell vibrations due to oscillations in supersonic exhaust gases Which further changes centre of trust and as rockets are longer centre of trust is further from centre of mass so any minute shift in centre of trust produces TORQUE around centre of mass which causes rocket to yaw up or down or pitch sideways.
As rocket fuel burns temperature of rocket surface increases which Expend rocket motor casing With changes aerodynamic forces Centre And as I have stated above rockets are longer so any changes in aerodynamic forces produces significant torque( torque=forcexdistance ) which causes yaw and pitch.
Then there are random minute changes in trust of solid motors
I have provided a simple explanation of why unguided rocket or self powered projectiles are inaccurate Compare to Artillery guns.
If you want to go into details then there are factors like exhaust bell vibrations due to oscillations in supersonic exhaust gases Which further changes centre of trust and as rockets are longer centre of trust is further from centre of mass so any minute shift in centre of trust produces TORQUE around centre of mass which causes rocket to yaw up or down or pitch sideways.
As rocket fuel burns temperature of rocket surface increases which Expend rocket motor casing With changes aerodynamic forces Centre And as I have stated above rockets are longer so any changes in aerodynamic forces produces significant torque( torque=forcexdistance ) which causes yaw and pitch.
Then there are random minute changes in trust of solid motors
I have provided a simple explanation of why unguided rocket or self powered projectiles are inaccurate Compare to Artillery guns.
If you want to go into details then there are factors like exhaust bell vibrations due to oscillations in supersonic exhaust gases Which further changes centre of trust and as rockets are longer centre of trust is further from centre of mass so any minute shift in centre of trust produces TORQUE around centre of mass which causes rocket to yaw up or down or pitch sideways.
As rocket fuel burns temperature of rocket surface increases which Expend rocket motor casing With changes aerodynamic forces Centre And as I have stated above rockets are longer so any changes in aerodynamic forces produces significant torque( torque=forcexdistance ) which causes yaw and pitch.
Then there are random minute changes in trust of solid motors