A team of researchers has made significant strides in solving one of hypersonic aerodynamics' most persistent puzzles - the unpredictable transition from smooth to turbulent airflow. They discovered two competing instability patterns that provide a possible explanation for the long-debated transition reversal phenomenon.
Researchers at Beihang University derived capture zones of pulsed and continuous guidance laws for both pursuer and evader, highlighting their differences and influence factors. The study provides a theoretical guideline for guidance law selection in various pursuit-evasion games.
A study of 200 pilots found that errors caused by lack of skills or poor decisions often contributed to inflight loss of control incidents. The research highlights the need for better pilot training, particularly in recovering from out-of-control situations like spins and spirals.
The Parker Solar Probe team received the 2024 Robert J. Collier Trophy for their record-breaking solar encounter, which included a closest approach of 3.8 million miles above the Sun's surface. The mission provided groundbreaking data and imagery on the solar wind, heliosphere, and coronal mass ejections.
Researchers propose integrated solution combining ultrasonic vibration-assisted grinding, heat pipe grinding wheels, and minimum quantity lubrication to achieve high-efficiency precision machining with environmental sustainability. This process reduces grinding forces, minimizes thermal damage, and improves surface quality.
A research team developed an advanced adaptive aerodynamic model inspired by finite vortex theory to predict rotor performance in complex two-phase flow environments. The Finite Vortex Rotor Model (FVRM) incorporates water surface deformation and accounts for the complex feedback between rotor downwash and liquid response.
A study published in Chinese Journal of Aeronautics reveals that DSJ combines the stability of steady jets and efficiency of pulsed jets, providing better control effects under similar momentum coefficients. The unique quasi-steady characteristics of DSJ avoid large fluctuations in real-time aerodynamics.
The Dyson-Harrop CubeSat system harnesses high-density energy from the solar wind and offers a compact, modular solution for space-based clean energy. It generates approximately 1 kilowatt of power, more than ten times greater than similarly sized conventional solar panels.
FAPESP is hosting researchers and startups from São Paulo in France to present their health and aeronautics research, strengthening international collaborations. The event includes scientific forums, startup pitches, and networking opportunities.
LyoWave, a company commercializing microwave heating technologies developed at Purdue University, has received a $304k NSF SBIR grant to scale its tech for pharmaceutical and biologics manufacturing. The project aims to increase manufacturing throughput and reduce costs.
Researchers developed a mixed integer programming model to optimize satellite 3D component layout, improving design efficiency and efficacy. The model solved the complex bilevel optimization task in a single run, finding globally optimal solutions within reasonable timeframes.
Researchers create CARL-Bot to ride vortex rings and navigate turbulent ocean currents without fighting them, inspired by nature's ability to conserve energy. The system uses a single accelerometer and simple control laws to achieve energy-efficient propulsion, opening doors for future applications in ocean exploration and monitoring.
Three NSF-funded investigations are launching on NASA's SpaceX CRS-32 mission to ISS National Laboratory. Investigations aim to advance pharmaceutical manufacturing, develop new materials, and study active matter in microgravity environment.
Scientists successfully developed a method to precisely control the flight altitude of robo-pigeons using targeted electrical stimulation of the LoC nucleus. The study found that stimulation frequency and cycle can effectively control altitude, while increasing neural fatigue is minimized with proper inter-stimulus interval.
The Parker Solar Probe team was awarded the 2024 Robert J. Collier Trophy for its innovative technology advancements and historic close approaches to the Sun. The mission has greatly advanced our understanding of solar science and space weather events, with lasting benefits for Earth's power grids and astronauts.
Crew-9 astronauts conducted research on protein crystallization studies and a new drug for Alzheimer's, dementia, and Parkinson's. They also supported student-led experiments, contributing to the next generation of explorers.
The Crew-10 mission will support cutting-edge biomedical investigations and NSF-funded physical science projects through the ISS National Lab. Astronauts will conduct experiments on the International Space Station, with findings benefiting humanity and driving commerce in low Earth orbit.
A study by MIT researchers found that climate change can cause the thermosphere to shrink, reducing atmospheric drag and allowing space junk to remain in orbit for decades. This could lead to increased collisions and debris, threatening the sustainability of satellite operations.
A new framework allows users to correct a robot's actions in real-time using intuitive interactions, such as pointing or nudging the arm. The method achieves a success rate of 21% higher than an alternative approach, enabling more efficient and accurate task completion.
UTA's expansion of its undergraduate research program has enabled students to present their work at major symposiums, including the American Institute of Aeronautics and Astronautics conference. The program has strengthened students' commitment to pursuing graduate studies in various fields.
Researchers developed a novel approach to coupled aeroelastic analysis of panels with add-on acoustic black holes, significantly increasing the critical flutter boundary and outperforming traditional damping devices. The study highlights the importance of selecting effective AABH modes for optimal performance.
Researchers have developed a flexible dual-band electrochromic device that integrates energy storage, reducing building energy consumption. The device offers excellent performance in various climate zones, providing substantial energy savings through selective modulation of light and heat across multiple wavelengths.
A team of MIT engineers has developed a training method for multiagent systems that can guarantee their safe operation in crowded environments. The method enables agents to continually map their safety margins, allowing them to scale up to any number of agents while maintaining system safety.
Lauren Berger, a Texas A&M University doctoral student, has been awarded a prestigious FINESST grant from NASA to study Martian dunes. She aims to analyze the shapes and patterns of compound dunes on Mars using high-resolution images, comparing them to similar dunes on Earth.
A novel disturbance rejection optimal guidance method has been proposed to enhance precision landing performance of reusable rockets. The method combines adaptive optimal steering and disturbance attenuation, allowing for improved accuracy and reduced propellant usage.
Nearly 50 ISS National Lab-sponsored payloads splashed down safely on SpaceX’s CRS-31 mission, including research for early cancer detection and neurodegenerative conditions treatments. The investigations leveraged the space station's unique environment to improve life on Earth.
A team of scientists has introduced a novel basic detonation flow field, the Axisymmetric Inward Turning Curved Detonation Wave (AIT-CDW), which boosts compression capabilities and accelerates gas ignition. The study highlights the importance of geometric parameters in maintaining stable combustion processes.
The AstroRad vest employs high-density polymers to shield vital organs from radiation exposure, addressing cancer and radiation sickness risks. The wearable technology has undergone extensive testing through the ISS National Lab, leading to significant enhancements in its design and functionality.
Researchers from Tsinghua University proposed a Ram-Rotor Detonation Engine (RRDE) that improves on existing detonation engines. The RRDE uses a rotating rotor and stationary casing to create a stable detonation wave, achieving high pressure gains and efficiency.
The research project BIOntier aims to develop more environmentally friendly materials with advanced technological solutions. UC3M participates as leader of the experimental characterisation work package, combining experimental analysis and computational simulations.
A new AI tool generates realistic satellite images of future flooding, which can help communities visualize and prepare for approaching storms. The method combines a generative artificial intelligence model with a physics-based flood model, producing more accurate and realistic images than an AI-only approach.
AnalySwift will develop a composite heater layer for trusses and other infrastructure, enabling the reconfiguration of structural elements in space. The company's software tool will simulate multiphysics modeling and analysis of thermoplastics.
The SpaceX CRS-31 mission to the International Space Station includes studies on in-space manufacturing, cardiac health, and a method for repairing spacecraft damaged by debris. Multiple payloads sponsored by the ISS National Laboratory are bound for the orbiting outpost.
Researchers developed an advanced system integrating GNSS, IMU, and LiDAR Odometry to overcome urban navigation challenges. The new approach improves positioning accuracy by 35.9% and boosts 3D positioning by 50%, enabling smarter transport solutions.
High-performance manufacturing (HPM) is a solution to meet the challenges of loading, transmission, conduction, energy conversion and stealth requirements in critical sectors. HPM advocates for a design and manufacturing approach based on scientific modeling and precise control.
A literature review identifies factors influencing material microstructure evolution during Arc wire-based DED. Novel techniques like interlayer forging and ultrasonic impact enhance material properties, reducing defects and improving microstructure.
Parachute fibers' behavior under stress was studied using micro-CT scans, revealing they are not isotropic and respond differently to increasing loads. The findings inform processes like parachute assembly and improve models for screening parachute materials, making industries more cost-effective and time-efficient.
A Caltech-led team has developed a control strategy called FALCON that uses reinforcement learning to adaptively learn how turbulent wind can change over time, allowing UAVs to predict and respond to extreme turbulence in real-time. The strategy has been tested in a challenging test setup and shows promising results.
A new inverse-design approach has been introduced to design on-chip computational spectrometers, offering a dramatic leap forward in spectrometer technology. The method uses bio-inspired algorithms, such as particle swarm optimization, to optimize disordered photonic structures and achieve impressive results.
The UC3M-Universia Chair aims to address the challenges of large tech companies' data use and create a new, transparent and fair personal data economy. Researchers will develop models and algorithms linked to AI that are interpretable and unbiased.
The Universidad Carlos III de Madrid is organizing 16 R&D&I outreach activities as part of European Researchers' Night 2024, with half taking place at its Madrid-Puerta de Toledo Campus. The events cover topics like AI, biocultural rights, and scientific discoveries.
Researchers created a novel biomimetic potassium nanochannel that mimics the structure of biological KcsA channels, exhibiting high K+ permeation rates and selectivity ratios. The channel's selectivity filter features closely spaced carbonyl binding sites, allowing for precise ion coordination.
Boris Yakobson aims to transform the future of advanced materials through Rice University research. His projects focus on developing predictive synthesis models and automating the search for new materials, with applications in energy and electronics.
A research team has developed a method to strengthen graphene nanolayers by cross-linking them with rotaxanes, improving the material's stretchability and toughness. The new films show increased tensile strength, elasticity, and toughness, making them suitable for flexible electronics and composite materials.
A new neural operator concept, NORM, has been proposed to learn operators defined on irregular Riemannian manifolds. The proposed method demonstrated superior performance in solving partial differential equations and engineering cases, including blood flow dynamics prediction and composite workpiece deformation.
A team of researchers from the University of Delaware developed a forest extent agreement map for Mexico, combining seven remote sensing products and two independent datasets to identify consensus areas of agreement. The study found high agreement in heavily forested areas and disagreement in complex ecological zones.
Researchers use carbon nanotubes to prevent cracking in multilayered composites, improving resistance by up to 60%. This innovation could lead to safer and more durable aircraft with advanced composite materials.
Researchers discovered that astronauts without prior headache history experienced migraine and tension-type headaches during extended space missions. The study of 24 astronauts showed a significant increase in headaches during space flight compared to pre-flight reports.
Scientists at Caltech have developed a new type of robotic jellyfish that can swim faster and carry payloads, making them ideal for collecting oceanic climate data. The biohybrid creatures use electronics to enhance their swimming abilities and can reach speeds of up to 4.5 times those of natural jellyfish.
Nontraditional energy-assisted mechanical machining uses vibration, laser, electricity, etc. to improve machinability and reduce process forces in processing difficult-to-cut materials and components. The technology provides a feasible way to enhance material removal rate and surface quality.
Researchers developed a UV-sensitive tape that can transfer 2D materials like graphene with ease, reducing damage and increasing efficiency. The new technology allows for flexible plastics to be used in device substrates, expanding potential applications.
Researchers from the University of Delaware found that plants grown in simulated microgravity conditions are more prone to infections from Salmonella, a human pathogen. The study suggests that space-grown lettuce may not be as healthy for astronauts as previously thought due to its increased susceptibility to bacterial contamination.
Researchers have created a lightweight, portable antenna that can switch between two operating states to communicate with satellites or devices on the ground. The antenna's unique design allows it to be compact and foldable, making it ideal for disaster-struck areas or underdeveloped regions.
A study by Southern Methodist University researchers found that tennis ball head injuries can cause traumatic brain injuries, although they are rare. The study used computational modeling to simulate the impact of a tennis ball on a person's head, and found that high-speed impacts could lead to concussions or worse.
A team of researchers at EPFL has successfully challenged the reliability of acoustic monitoring for detecting defects in laser additive manufacturing. By analyzing shifts in the acoustic signal during regime transitions, they identified defects in real-time, providing a cost-effective solution to improve product quality and integrity.
A University of Oklahoma-led study highlights newly measured extremes in stratospheric water vapor recorded during the DCOTSS field project. High-level thunderstorms enhance water vapor in the stratosphere at levels higher than previously understood.
A team of scientists developed a microwave microstrip line planar resonator sensor to detect added water in honey. The sensor's resonance frequency shifts with increased water content, allowing for adulteration detection.
Researchers investigate impact of different geometric porosities on aerodynamics of supersonic parachutes. The study reveals that porosity structures have little effect on flow field mode and pressure distribution, but affect drag performance, with single-seam models showing better stability.
Researchers reviewed techniques for Jupiter capture trajectories, including satellite-aided captures and multiple-satellite-aided captures. They also examined tour trajectories of Galilean moons using patched-conics models and three-body trajectory designs.
A team of researchers from Nanjing University of Aeronautics & Astronautics developed a bionic robot that can complete smooth movement, including landing on a vertical wall, climbing along the wall, and taking off from the wall. The robot uses a flapping/rotor hybrid power layout to mimic insect's control of body posture.