RFP for Internal Ballistics 1D Software Suite, Issued by Department of Defence Research and Development

Issue Date: 28-Apr-2023         |     Response Date: 11-May-2023

Internal Ballistic Studies are carried out for finalizing feasible propulsion system configuration during the design and development of any ammunition developed by ARDE or any other agency.

Interior ballistics study deals with the interaction of the gun, projectile, and propelling charge before emergence of the projectile from the muzzle of the gun. Modelling and simulation methods offer greater flexibility in the design process by allowing a ballistician to quickly carry out analysis for various scenarios.

Modelling and simulation allows to evaluate the robustness of a design to variations in structural or loading parameters. Using such methods, the design process becomes faster and easier.

Modelling the complex combustion processes inside the chamber is very difficult without using internal ballistics software. Simulation studies through software will reduce the number of dynamic trials and hence the overall cost of the project.

Overall use of establishment of ballistics software will increase the confidence level of the designer.

Internal Ballistics lD Software Suite shall have following features

I. The software shall provide an easy-to-use environment for modeling the internal ballistics study for a wide range of projectile, propellants with various charge designs and compositions and gun system types.

The software features shall include:

a. Modelling of axial pressure waves in the gun chamber and along the shot travel.

b. Capability to analyses charge designs which consists of various types of propellant

c. Modelling of complex ignition processes with separate igniter and propellant components.

d. Modelling of moving charges.

e. Shall support propellant geometries (including slotted tube and multi-tubular)

f. User-defined grain geometries for novel or nor-ideal grains

9. User-defined propellant properties vs. regression distance for retardants

h. Erosive burning & implicit ignition of grains by heat transfer for improved flare-front modelling.

i. Estimates muzzle velocity and peak pressure for variations in the total charge or projectile mass.