Concordia Researchers Develop Kerosene-Based Gel for Stable Space Propulsion
Researchers at Concordia University have engineered a kerosene-based gel designed to improve the storage and delivery of fuel for rockets and satellites. According to reporting from Interesting Engineering, the material combines the stability of a solid at rest with the flow characteristics of a liquid when subjected to mechanical force or heat.
Context from Industry Pulse
The development of stable propellants is critical for the future of orbital logistics and satellite longevity. Traditional liquid propellants are prone to instability and physical movement within tanks, which complicates flight dynamics. Conversely, standard gel fuels often suffer from high viscosity that hinders efficient pumping and atomization. By utilizing a kerosene-lecithin-calcium chloride mixture, the Concordia team addresses these mechanical barriers. The material’s ability to remain solid for over a year in storage while liquefying rapidly under specific heat or chemical triggers provides a dual-benefit for long-term space missions that require both high reliability and precise thrust control.
Engineers Pranay Mudaliar and Jerin John developed this new propellant to mitigate the risks associated with traditional liquid fuels, such as leakage and tank sloshing that can disrupt spacecraft control. According to Interesting Engineering, the gel is composed of kerosene, lecithin, and calcium chloride. The chemical interaction between these components creates a mesh-like network of worm-like micelles that effectively immobilizes the fuel until it is needed for combustion.
Testing published in the journal Langmuir revealed that the gel exhibits significant shear thinning properties. As reported by Interesting Engineering, the viscosity of the material drops by a factor of 100 as the shear rate increases, allowing it to be pumped and sprayed more efficiently than conventional gel propellants. The substance also features a transparent appearance, which researchers believe will assist in the visual observation of fuel movement and burning patterns during future trials.
Environmental factors and chemical additives allow for precise control over the state of the fuel. Interesting Engineering notes that the gel transitions into a liquid when heated to temperatures between 138 and 154 degrees Fahrenheit, depending on its density. Furthermore, the introduction of ethanol provides an immediate method for liquefaction by disrupting the internal micellar network. This versatility offers a potential solution to the industry-wide challenge of balancing fuel stability with engine delivery requirements.
Durability testing suggests the material is suitable for long-term missions, as sealed samples remained stable for over a year. The researchers utilized oscillatory testing to confirm an elastic linear viscoelastic regime, ensuring the structural integrity of the gel during storage. While the study demonstrates successful responses to mechanical, thermal, and chemical triggers, Interesting Engineering indicates that further testing is required to confirm the effectiveness of the gel within actual propulsion systems.
The Industry Pulse Bottom Line
This kerosene-based gel offers a hybrid solution to propulsion challenges by providing solid-like storage stability and liquid-like flow efficiency, potentially reducing spacecraft control issues caused by fuel sloshing and leakage.