Horizontal Test Firing
Structured horizontal firing programs evaluate gas charge pressure, peak release pressure, projectile weight, and resulting velocity using a 7-inch by 55-foot tube for repeatable engineering data.
Explore the engineering behind high-velocity gas gun barrels, including tube dimensions, pressure variables, launch performance, and projectile integration. Green Launch applies proven light-gas propulsion expertise from repeated field testing and hypersonic programs to support customers evaluating barrel design, velocity targets, and mission-specific launch requirements.
Technical launch services focused on barrel performance, propulsion testing, and high-speed payload applications.
Structured horizontal firing programs evaluate gas charge pressure, peak release pressure, projectile weight, and resulting velocity using a 7-inch by 55-foot tube for repeatable engineering data.
High-speed launch support for hypersonic vehicle programs, including scramjet-related testing with demonstrated projectile velocities up to 2.97 km/sec, or roughly Mach 9.
Launch engineering for sub-orbital payload delivery and atmospheric missions, using long-tube light-gas systems to accelerate payloads into the stratosphere and beyond.
Vehicle and barrel-integrated launch solutions for mesospheric and ionospheric sampling missions, supporting scientific payload protection, RF transparency, and high-altitude data collection.
Advanced barrel and propulsion engineering supporting future low Earth orbit delivery concepts with rapid launch cadence, reduced emissions, and precision gas injection control.
Engineering support for proprietary light-gas propulsion architectures using hydrogen and oxygen propellant to achieve high launch velocity with reduced muzzle flash and acoustic signature.
High-velocity gas gun barrel engineering demands more than tube length and bore size. Green Launch combines propulsion physics, pressure management, projectile integration, and field-tested launch data to help customers evaluate barrel specifications that support repeatable high-speed performance. From 7-inch test tubes to 54-foot launch systems, the focus stays on safe acceleration, measurable results, and mission-ready design.
Successful launches and repeatable test data demonstrate practical high-velocity light-gas propulsion capability.
Green Launch brings specialized aerospace knowledge and demonstrated launch performance to demanding engineering programs.
Multiple successful firing campaigns provide real-world data across pressure, weight, and velocity variables.
Leadership includes experienced physicists and systems specialists focused on high-velocity propulsion engineering.
Demonstrated launch speeds up to Mach 9 support advanced hypersonic and payload testing objectives.
Hydrogen and oxygen propulsion supports lower-emission launch concepts with water vapor as byproduct.
Experienced leaders advancing light-gas launch technology.
Chief Technical Officer
Dr. John W. Hunter serves as Chief Technical Officer at Green Launch and brings deep expertise in high-velocity propulsion physics and launch system engineering. A physicist by training, he previously led the SHARP project at Lawrence Livermore National Laboratory, giving him rare hands-on experience with extreme-speed launch concepts and advanced gas gun applications. At Green Launch, his work supports the technical direction behind barrel design, pressure management, projectile acceleration, and hypersonic testing performance. His background helps bridge theoretical modeling with practical field execution, making him a key resource for customers evaluating launch tube specifications, achievable velocities, and mission-specific engineering tradeoffs in demanding aerospace and research environments.
Strategic Outreach
Eric Robinson supports Green Launch through strategic outreach informed by a strong background in systems science and entrepreneurship. His expertise in fluid delivery systems for aerospace applications contributes valuable perspective to how propulsion concepts are communicated, aligned with customer goals, and translated into practical program planning. He helps connect technical capabilities such as light-gas propulsion, barrel performance, and payload integration with the needs of aerospace, defense, and research organizations. By bridging engineering discussions with partnership development, Eric plays an important role in shaping collaborations around high-velocity launch testing, sub-orbital missions, and future orbital delivery concepts. His systems-oriented approach supports clear communication across complex technical and commercial requirements.
Chairman of the Board
Don Whitney serves as Chairman of the Board and brings operational insight shaped by experience as an Air Force pilot and environmental consultant. His background adds practical perspective to launch planning, mission execution, and broader program oversight for Green Launch's high-velocity propulsion initiatives. With experience spanning aviation and environmental considerations, he contributes to disciplined decision-making around testing operations, safety, and long-term deployment strategy. His leadership supports the company's efforts to advance sustainable alternatives to conventional rocket launches while maintaining focus on real-world execution. For customers and partners, Don's role reinforces Green Launch's ability to combine technical ambition with operational planning suited to complex aerospace and research missions.
The inner diameter of a gun barrel is called the bore. In engineering contexts, bore size is a critical specification because it affects projectile fit, sealing efficiency, pressure behavior, and achievable velocity. For high-velocity gas gun systems, bore dimensions must be matched carefully with projectile geometry, sabot design, and launch objectives to maintain stability and repeatable performance.
Speak with our team about barrel specs and launch requirements.
Years of focused propulsion development.
Repeated field validation of launch systems.
Demonstrated extreme-speed propulsion performance.
Share your performance targets, payload details, or barrel specification questions, and our team will help outline the right technical path.
For immediate assistance, feel free to give us a direct call at 619-933-6678. You can also send us a quick email at jwhunter2004@yahoo.com
For immediate assistance, feel free to give us a direct call at 619-933-6678. You can also send us a quick email at jwhunter2004@yahoo.com