Harnessing Aerospace Fluid Mechanics and Cavitation for Biomedical Engineering: Advancing Non-Invasive Therapies, Drug Delivery, and Medical Devices
Year: 2025
Type: conference-paper
Abstract: Aerospace technologies have profoundly transformed biomedical science, with innovations in fluid dynamics, cavitation control, microgravity research, and advanced materials contributing to life-saving advancements in healthcare. These interdisciplinary applications have led to improvements in drug delivery, cardiovascular modeling, medical imaging, and prosthetic design. Core principles from aerospace fluid mechanics, such as multiphase flow and cavitation, have been directly adapted for biomedical use, improving the precision and efficacy of medical treatments. Cavitation, a phenomenon characterized by the rapid formation and collapse of vapor cavities in a fluid, has had a significant biomedical impact. Initially studied in aerospace systems like rocket engine turbopumps to mitigate material erosion, the understanding of cavitation dynamics has led to breakthroughs such as shock wave lithotripsy (SWL). SWL uses focused ultrasound pulses to generate cavitation bubbles that fragment kidney stones non-invasively. The same principles have been applied in ultrasound-driven microbubble therapies, where cavitation assists in targeted drug delivery by bursting microbubbles near tumor sites for localized medication release. These adaptations highlight how fluid dynamic insights from aerospace have advanced non-invasive medical treatments. Microgravity research has further revolutionized biomedical advancements by enabling unique fluid behaviors not possible under normal gravitational conditions. On Earth, gravity-driven convection and sedimentation often hinder the growth of high-quality protein crystals essential for drug design. In contrast, the microgravity environment aboard the International Space Station (ISS) allows for the growth of larger, more uniform protein crystals, improving drug development for conditions like cancer. Merck’s Keytruda, a monoclonal antibody drug, was optimized using microgravity-based crystallization studies, allowing for more precise targeting of immune checkpoints in cancer therapy. Additionally, microgravity experiments have enhanced the understanding of pathogen behavior and antibiotic resistance, advancing the development of more effective antimicrobial drugs. Fluid mechanics principles from aerospace have also influenced intravenous (IV) fluid management systems. In microgravity, traditional fluid handling fails due to the absence of buoyancy, leading to the development of capillary-driven fluid transport technologies. These advancements, originally developed for space-based fuel tanks, have since been adapted for IV infusion systems and portable dialysis units in remote healthcare settings, ensuring fluid delivery without gravitational dependence. Aerospace materials research has also had a profound impact on biomedical device design, particularly in prosthetic limbs, orthopedic implants, and cardiovascular devices. Titanium alloys, developed for spacecraft and aircraft structures due to their high strength-to-weight ratio and corrosion resistance, have been adapted for orthopedic implants and prosthetics, providing lightweight, biocompatible solutions with minimal wear. Shape memory alloys (SMAs) like nickel-titanium (NiTi), initially designed for morphing wings and actuators in aerospace applications, have been repurposed for cardiovascular stents and orthodontic braces. These alloys return to their original shape when exposed to body heat, making them ideal for minimally invasive medical procedures requiring precision and flexibility. Cardiovascular technologies have also benefited from aerospace innovations in fluid dynamics. Computational fluid dynamics (CFD) tools, originally developed for simulating turbulence and flow separation in jet engines, have been adapted for modeling blood flow in artificial heart valves, left ventricular assist devices (LVADs), and vascular grafts. LVAD systems, which provide circulatory support for heart failure patients, use centrifugal pump designs inspired by aerospace turbomachinery. The vortex flow dynamics optimized in rocket fuel pumps have been translated into blood pump designs that minimize hemolysis (blood cell damage) and thrombosis, reducing complications in cardiac support systems. Aerospace imaging technologies have similarly found groundbreaking applications in medical diagnostics. Hyperspectral imaging (HSI), originally designed for Earth observation satellites, has been adapted for non-invasive tumor detection and wound assessment. By capturing a wide spectral range, HSI can identify subtle variations in tissue reflectivity indicative of early-stage cancer. Additionally, thermal imaging sensors developed for spacecraft heat management have been repurposed for inflammation monitoring and infection detection, particularly in diabetic wound care and post-surgical evaluations. These technologies have improved diagnostic accuracy while reducing the need for invasive biopsies. Life support systems developed for long-duration space missions have also influenced critical care technologies. NASA's VITAL ventilator, designed during the COVID-19 pandemic, was based on oxygen and carbon dioxide regulation technologies from the ISS's Environmental Control and Life Support System (ECLSS). This simplified, cost-effective ventilator was optimized for emergency use and resource-limited settings, showcasing the adaptability of space systems for terrestrial healthcare needs. Similarly, advanced water filtration systems developed for long-term space missions have been repurposed for dialysis machines and portable water purifiers, providing clean water access in underserved regions and disaster zones. Spaceflight has also provided critical insights into human physiology, particularly regarding fluid shifts and musculoskeletal health. Astronauts experience bone density loss and muscle atrophy in microgravity, inspiring the development of rehabilitation technologies such as anti-gravity treadmills and resistance-based training devices for physical therapy. These systems, originally designed to mitigate astronaut deconditioning, have since been adapted for osteoporosis treatment and musculoskeletal rehabilitation in clinical settings. Fluid redistribution in microgravity has also contributed to cardiovascular health studies, improving models for stroke risk assessment and venous thrombosis prevention. Despite these transformative contributions, challenges remain in fully harnessing aerospace technologies for widespread biomedical applications. The high cost of space-based research, limited access to microgravity platforms, and the complexity of multiphase flow modeling in biological systems create barriers to mainstream adoption. Additionally, ethical considerations arise concerning the dual-use nature of aerospace technologies, such as their potential for both defense and civilian medical applications. However, the ongoing collaboration between aerospace engineers, biomedical researchers, and clinicians offers substantial promise for future innovations. This paper presents a comprehensive review of aerospace-driven biomedical innovations, emphasizing fluid dynamics, cavitation behavior, and microgravity research, while highlighting their transformative potential in advancing global healthcare and medical diagnostics.
DOI: 10.2514/6.2025-98728
Author: Jubel Kurian
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4413190733