IIT Hyderabad Students Innovate with Low-Cost Light Gas Gun
In a remarkable feat of engineering, seven students from the Indian Institute of Technology Hyderabad (IIT H) have successfully developed a low-cost light gas gun capable of firing projectiles at supersonic speeds. This innovative project has garnered attention for its potential applications in both research and practical scenarios.
Project Overview
The students, hailing from various branches of study, embarked on this project under the BHARATI (Bold Hearted Aspirants Raising to Transform India) initiative. This program provides funding and mentorship to first-year BTech students, encouraging them to pursue innovative ideas. The prototype they created is designed to fire projectiles at speeds exceeding the speed of sound, which is approximately 343 metres per second.
Technical Specifications
The light gas gun features a barrel length of eight meters and utilizes helium as the propellant. When fired, the projectiles can reach speeds of up to 800 metres per second. Pritam Hemant Bagle, a student from the physics department and a key member of the team, explained the working principle: “The system operates by converting the gas’s potential energy into kinetic energy, enabling the projectile to achieve high speeds while maintaining low pressure.”
Materials Used
One of the notable aspects of this project is the choice of materials. The team opted for sanitary-grade PVC pipes, which can withstand pressures of up to 30 atmospheres, sourced from local construction yards. This decision is significant as traditional guns are typically made from metal due to the high pressures involved, which can reach around 200 atmospheres.
Professor’s Insight
Karthick SK, an assistant professor of mechanical and aerospace engineering, has been guiding the students throughout this project. He stated, “Using a helium cylinder and compressed gas at 10 atmospheres in an eight-meter-long barrel allowed us to accelerate a three-gram bullet to a maximum speed of 800 metres per second.” This innovative approach not only reduces costs but also enhances safety during experimentation.
Research and Development
The team conducted extensive studies to analyze the velocity of the projectiles. Their findings will be presented at the seventh national wind tunnel conference, scheduled to take place at the Birla Institute of Technology in Ranchi during the third week of February. The entire project was developed on a budget of approximately Rs 50,000, strictly for research purposes.
Potential Applications
The implications of this project extend beyond academic curiosity. M Raj Kiran Reddy, a PhD student involved in the project, highlighted its practical applications: “This is a test rig. For instance, when a space probe re-enters Earth’s orbit, it can collide with debris at supersonic speeds. This system can be utilized to study the impact of such debris on space probes, as well as to understand how projectiles disintegrate under extreme conditions.”
Conclusion
The development of the low-cost light gas gun by IIT Hyderabad students exemplifies the spirit of innovation and practical problem-solving. By leveraging accessible materials and creative engineering, they have created a tool that not only serves educational purposes but also has the potential for significant real-world applications. As these students prepare to present their findings, the academic and scientific communities eagerly await the insights that will emerge from their research.
Note: This article is based on information available as of January 2026 and highlights the achievements of students at IIT Hyderabad in the field of engineering and innovation.
