The relentless pursuit of shedding grams for a giant leap in space exploration.
In the high-stakes environment of space exploration, mass is the enemy. The cost to launch a single kilogram of material into Earth orbit can run into tens of thousands of dollars, and the penalties are even greater for missions aiming for the Moon, Mars, or beyond 1 . This stark reality is the driving force behind one of NASA's most critical technology quests: the development of advanced lightweight structures and materials.
This article delves into a key chapter of this quest—the 2016 NASA STTR Phase I Solicitation—which served as a national call to action for innovators to help build the next generation of lighter, stronger, and smarter spacecraft 4 .
The Small Business Technology Transfer (STTR) program is a unique funding initiative that requires small businesses to formally partner with non-profit research institutions, like universities 6 . This powerful collaboration marries the agility and innovation of small companies with the extensive research capabilities of academic labs.
The 2016 solicitation in the "Lightweight Structures and Materials" topic area was explicitly designed to develop technologies for a wide range of space vehicles, including launch systems, crewed vehicles, and deep-space habitats 4 .
The ultimate goal was clear: reduce structural mass. As outlined in the solicitation, even slight reductions translate directly into increased capacity for cargo or scientific instruments, thereby enhancing the scope and return of every mission 4 .
STTR requires formal partnerships between small businesses and research institutions.
Primary focus on developing technologies that reduce structural mass of spacecraft.
The program targeted several groundbreaking focus areas for lightweight structures and materials:
| Focus Area | Technology Description | Expected Impact |
|---|---|---|
| Large Deployable Structures for SmallSats | Innovative structures allowing small satellites to host large antennas or solar arrays. | Enables more powerful communications and sensing in a smaller, cheaper package. |
| Multifunctional Materials & Structures | Materials that integrate other functions, like structural health monitoring, into their design. | Creates "smart" structures that can monitor their own integrity, improving safety and reducing mass from separate monitoring systems. |
| Extreme Environment Structures | Materials and designs capable of withstanding intense heat, cold, or radiation. | Ensures vehicle integrity for long-duration missions through harsh space environments. |
| In-Space Structural Assembly | Technologies for assembling and manufacturing structures in the vacuum of space. | Allows for construction of large-scale structures (like massive telescopes) that cannot be launched in one piece. |
While the 2016 solicitation covered structures, the STTR program's scope is vast. A brilliant example from the same year that illustrates the program's application is the Integrated Water Recovery Assembly (IRA) developed by Paragon Space Development Corporation in partnership with Texas Tech University 7 . This project perfectly encapsulates the STTR model: a small business (Paragon) leveraging the research expertise of a university (Texas Tech) to solve a critical NASA problem.
Create a compact, efficient wastewater recycling system for long-duration missions to the Moon and Mars. Without such a system, missions would need to carry all the water required for their entire journey—an impossibly heavy and logistically daunting prospect.
Develop an integrated water recovery system that could potentially eliminate the need for hazardous chemical pretreatments and inefficient processes like ion exchange used in existing systems 7 .
| Research Reagent / Material | Function in the Experiment |
|---|---|
| Wastewater Simulant | A laboratory-made solution that mimics the chemical composition of real astronaut wastewater (e.g., containing urea, salts, organic matter). |
| Specialized Filtration Membranes | Physical barriers with extremely fine pores designed to separate contaminants and microbes from water at a microscopic level. |
| Catalytic Reactors | Units that use specific catalysts to break down stubborn organic contaminants and disinfect the water through chemical reactions, reducing the need for hazardous chemical pretreatments. |
| Analytical Chemistry Kits | Tools and reagents to test the purified water for safety and potability, ensuring it meets strict health standards for human consumption. |
Creating and characterizing a wastewater simulant that matched NASA's specifications for astronaut wastewater.
Designing and assembling an integrated prototype system that combined physical filtration with advanced chemical processing.
Running rigorous tests to measure the system's efficiency in purifying water while tracking key metrics like power consumption, reliability, and waste production.
The results were promising. The team demonstrated that the IRA concept could potentially eliminate the need for hazardous chemical pretreatments and inefficient processes like ion exchange that were used in existing systems 7 . Barry Finger, Paragon's Chief Engineer, noted that the goal was a system that was "less complex, require far fewer consumables, and be more sustainable" than current technologies, establishing a strong foundation for further development in Phase II 7 .
The success of projects like Paragon's hinges on the unique STTR framework. Unlike its sister program, SBIR, STTR mandates an active research partnership.
| Program Feature | SBIR (Small Business Innovation Research) | STTR (Small Business Technology Transfer) |
|---|---|---|
| Partnering Requirement | Allows partnering with subcontractors, but does not require it. | Requires a formal partner that is a non-profit research institution (e.g., a university). |
| Principal Investigator (PI) | The PI must be primarily employed (>50%) by the small business. | The PI may be employed by either the small business or the research institution partner. |
| Work & Budget Allocation | Small business must perform at least 67% (Phase I); can subcontract up to 33%. | Requires a minimum of 40% of work by the small business and 30% by the research partner. |
| Primary Goal | To support small businesses in conducting groundbreaking R&D. | To bridge the gap between basic research and commercialization through technology transfer. |
This structure ensures that foundational science from academic institutions is effectively translated into practical technologies by agile small businesses, creating a powerful pipeline for innovation 6 .
Provide foundational research, lab facilities, and academic expertise
Provide commercialization focus, product development, and market access
Resulting in practical, commercially viable technologies for NASA missions
The 2016 NASA STTR Phase I Solicitation was far more than a simple funding announcement; it was a strategic investment in the foundational technologies that will define the future of space exploration. By tackling the persistent challenge of mass through advanced materials and intelligent systems, the program continues to empower American small businesses and researchers to push the boundaries of the possible.
The lightweight structures and life-support systems developed today are the critical building blocks for tomorrow's interplanetary journeys, ensuring that when humanity sets sail for the cosmic shore, our vessels are as light, resilient, and efficient as they can possibly be.
Lighter spacecraft enable more scientific instruments and capabilities per mission.
Every kilogram saved translates to significant launch cost savings.
Lightweight technologies enable missions to more distant destinations.
References to be added manually in this section.