Experimental Sounding Rocket Association

The Experimental Sounding Rocket Association (ESRA) is a non-profit organization founded in 2003 for the purpose of fostering and promoting engineering knowledge and experience in the field of rocketry. ESRA's current focus is in the field of experimental sounding rocketry, which we define as roughly between "experimental" or "research" high-power rockets and sounding rockets capable of reaching space (generally defined as 100 km altitude). ESRA hosts the International Rocket Engineering Competition (IREC) for teams from across the USA and around the world. With student built rockets flying up to 100,000 feet above ground level, competing rockets are typically 4 to 8 inches in diameter and 8 to 20 ft. long. Multistage rockets and all chemical propulsion types (solid, liquid, and hybrid) are allowed. For information on the IREC, please visit esrarocket.org