Experimental Sounding Rocket Association

Experimental Sounding Rocket Association The Experimental Sounding Rocket Association (ESRA) is a nonprofit founded in 2003 to advance engineering education and hands-on experience in rocketry.

We're best known for hosting IREC—the world’s largest competition for collegiate rocketry teams.

ESRA congratulates team 705, RMIT University, for ranking 2nd in the SDL Payload Challenge as well as the 10K Hybrid SRA...
08/21/2026

ESRA congratulates team 705, RMIT University, for ranking 2nd in the SDL Payload Challenge as well as the 10K Hybrid SRAD category! Incredible performance!

Photo by Jim Wilkerson.

Prepare your team for the 2027 International Rocket Engineering Competition (IREC)! Whether you're entering for the firs...
08/20/2026

Prepare your team for the 2027 International Rocket Engineering Competition (IREC)! Whether you're entering for the first time or looking to sharpen your strategy with expert insight, join ESRA on August 20, 2026 (TONIGHT) at 7PM CST for an in‑depth "How to Plan for IREC" session in collaboration with the University of Maryland Terrapin Rocket Team.

Please visit the ESRA website and click on "Schedule" to access the Zoom link.

ESRA Archive "2024 IREC Rocket Tracking" photo by Jim Wilkerson. This is a perfect "What to wear to IREC photo" with wid...
08/20/2026

ESRA Archive "2024 IREC Rocket Tracking" photo by Jim Wilkerson. This is a perfect "What to wear to IREC photo" with wide brimmed hats, long sleeve shirts, lightweight pants, and boots.

The Experimental Sounding Rocket Association was thrilled to welcome Karman Space & Defense as a Bronze Sponsor for the ...
08/19/2026

The Experimental Sounding Rocket Association was thrilled to welcome Karman Space & Defense as a Bronze Sponsor for the 2026 International Rocket Engineering Competition. From STEM engagement to hands-on engineering skills, their concept-to-production mindset supports the next generation of aerospace innovators. As a non-profit at Spaceport Midland, ESRA continues to support building next-generation engineers for an international community solving real mission challenges—together.

Is your team ready to compete in the 2027 International Rocket Engineering Competition (IREC)? Whether you’re preparing ...
08/18/2026

Is your team ready to compete in the 2027 International Rocket Engineering Competition (IREC)? Whether you’re preparing for the first time or looking to level up with practical guidance, join ESRA on August 20, 2026 at 7PM CST with the University of Maryland Terrapin Rocket Team for a detailed session on “Preparing for IREC.”

08/17/2026

ESRA would like to thank Onshape by PTC for their ongoing support of the International Rocket Engineering Competition and for backing the participating Rocketeers worldwide. With their sponsorship of the 2026 IREC, students gain access to professional CAD and PDM directly in the classroom—no installs, no file management, and seamless collaboration—so they can learn the modern engineering workflows used across aerospace industry, helping us build next generation of engineers.

This Week with ESRA: Join us for a Town Hall Panel on Thursday, August 20, 2026 at 7:00 PM CST as we discuss “Preparing ...
08/16/2026

This Week with ESRA: Join us for a Town Hall Panel on Thursday, August 20, 2026 at 7:00 PM CST as we discuss “Preparing for IREC.” For full details, please visit the Schedule section of our website.

ESRA congratulates team 708, USYD Rocketry Team, for winning 1st place in the SDL Payload Challenge and also the 10K Hyb...
08/14/2026

ESRA congratulates team 708, USYD Rocketry Team, for winning 1st place in the SDL Payload Challenge and also the 10K Hybrid SRAD category! Insane achievements from the team!

ESRA Archive: "2018 IREC Green Flag" In the world of rocketry, in what capacity does a "green flag" mean "go"?
08/13/2026

ESRA Archive: "2018 IREC Green Flag" In the world of rocketry, in what capacity does a "green flag" mean "go"?

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