CFD Analysis of Grid Fins for design improvements as effective control surfaces for missile aerodynamics

Analysis of grid fins for missile systems is to be done using computational fluid dynamics (CFD) and their aerodynamics characteristics are to be studied in detail. Performance of grid fins is to be compared with the performance of regular planner fins to get a view about why most of the modern-day

Project Title

CFD Analysis of Grid Fins for design improvements as effective control surfaces for missile aerodynamics

Project Area of Specialization

Mechanical Engineering

Project Summary

Analysis of grid fins for missile systems is to be done using computational fluid dynamics (CFD) and their aerodynamics characteristics are to be studied in detail. Performance of grid fins is to be compared with the performance of regular planner fins to get a view about why most of the modern-day missiles in the world are having grid fins instead of planner fins.

Project Objectives

Grid fin technology for missile which this project is trying to imitate is a system used in the latest missile systems such as the Vympel NPO R-77 and the 91ERI underwater missile. This project just represents how benefit it would be if we replace the old planer fins in our missiles with the new grid fins. Grid fins are mounted perpendicular to the direction of flow and provide increased controllability during the motion of the missile or rocket. This project provides a detailed analysis of grid fins using computational fluid dynamics techniques and tries to reach a conclusion that whether or not they should be used to get better performance from missile systems.

Project Implementation Method

The project would be divided into three phases listed below. • Designing, Modelling and Simulation using CFD • Design Optimization • 3D Printing / Machining and Testing. The geometry of the grid fins to be analyzed is to be made using CATIA/ SolidWorks and attached to a generic missile body. The geometry is then to be imported into ANSYS and meshing and flow simulations are to be run using FLUENT. In this phase, the ANSYS design would be meshed and simulated again and again in order to get optimal values for our design parameters. The optimized design will then be physically prepared using 3D Printing or Machining, whatever method would be feasible. This model will then be tested for different design parameters inside the subsonic wind tunnel.

Benefits of the Project

This system would increase the range of our surface-to-air and air-to-air missiles by having reduced drag at subsonic and supersonic speeds and increased L/D at high angles of attack.

Grid fins would allow for the better control of our guided missiles which would help to engage the target efficiently and accurately.

As for now, no significant space program is under progress in Pakistan. However, as the world is now moving towards space supremacy, spaace technology will be a must to survive in the future. Grid Fins can be an efficient part of our rockets and satellite launch systems having increased controllability and lesser drag at high speeds.

Technical Details of Final Deliverable

The expected deliverables of the project are as follows • Simulation of Grid Fins on a generic Missile Body Configuration. • Performance Improvement Categorization• Fabrication / Testing of Grid Fins

Final Deliverable of the Project

Software System

Core Industry

Education

Other Industries

Manufacturing

Core Technology

Others

Other Technologies

3D/4D Printing

Sustainable Development Goals

Industry, Innovation and Infrastructure, Peace and Justice Strong Institutions

Required Resources

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