mechanical and aerospace engineering
Autonomous Multi-Rotor UAVs: A Holistic Approach to Design, Optimization, and Fabrication
A, Aniruth, Satpathy, Chirag, K, Jothika, M, Nitteesh, M, Gokulraj, K, Venkatram, G, Harshith, S, Shristi, Vani, Anushka, Spurgeon, Jonathan
Unmanned Aerial Vehicles (UAVs) have become pivotal in domains spanning military, agriculture, surveillance, and logistics, revolutionizing data collection and environmental interaction. With the advancement in drone technology, there is a compelling need to develop a holistic methodology for designing UAVs. This research focuses on establishing a procedure encompassing conceptual design, use of composite materials, weight optimization, stability analysis, avionics integration, advanced manufacturing, and incorporation of autonomous payload delivery through object detection models tailored to satisfy specific applications while maintaining cost efficiency. The study conducts a comparative assessment of potential composite materials and various quadcopter frame configurations. The novel features include a payload-dropping mechanism, a unibody arm fixture, and the utilization of carbon-fibre-balsa composites. A quadcopter is designed and analyzed using the proposed methodology, followed by its fabrication using additive manufacturing and vacuum bagging techniques. A computer vision-based deep learning model enables precise delivery of payloads by autonomously detecting targets.
'Brainless' robot can navigate complex obstacles
Researchers who created a soft robot that could navigate simple mazes without human or computer direction have now built on that work, creating a "brainless" soft robot that can navigate more complex and dynamic environments. "In our earlier work, we demonstrated that our soft robot was able to twist and turn its way through a very simple obstacle course," says Jie Yin, co-corresponding author of a paper on the work and an associate professor of mechanical and aerospace engineering at North Carolina State University. "However, it was unable to turn unless it encountered an obstacle. In practical terms this meant that the robot could sometimes get stuck, bouncing back and forth between parallel obstacles. "We've developed a new soft robot that is capable of turning on its own, allowing it to make its way through twisty mazes, even negotiating its way around moving obstacles.
Artificial Intelligence And Moral Issues. Towards Transhumanism? - AI Summary
Ottawa, Canada, June 2017: Carlton University's Department of Mechanical and Aerospace Engineering announced the development of a technology that would revolutionise the future of space travel. As man goes ever further in his attempts to colonise space, technology is being developed โ as mentioned โ through which a 3D printer can self-replicate using materials collected on the surface of a specific celestial body. According to Japanese-born astrophysicist Michio Kaku โ a summa cum laude graduate of Harvard University: "Man is led to believe that, in order to explore the stars, you need a huge spaceship, but this is not the case. However โ apart from the help of warp drive and wormholes (faster-than light travels according to the Einstein-Rosen bridge theory) โ at that juncture, instead of spaceships full of humans, could not the universe be explored and populated with probes like von Neumann's? Exploration scientists have been working for decades on the project of turning mankind into mechanical or transhuman beings in order to create an entire cloned race of robots. Transhumanism is a philosophical and intellectual movement that advocates improving the human condition by developing and making widely available sophisticated technologies that can greatly enhance longevity and cognition. Ottawa, Canada, June 2017: Carlton University's Department of Mechanical and Aerospace Engineering announced the development of a technology that would revolutionise the future of space travel. As man goes ever further in his attempts to colonise space, technology is being developed โ as mentioned โ through which a 3D printer can self-replicate using materials collected on the surface of a specific celestial body. According to Japanese-born astrophysicist Michio Kaku โ a summa cum laude graduate of Harvard University: "Man is led to believe that, in order to explore the stars, you need a huge spaceship, but this is not the case.
Scientists make highly maneuverable miniature robots controlled by magnetic fields
The research team created the miniature robots by embedding magnetic microparticles into biocompatible polymers -- non-toxic materials that are harmless to humans. The robots are'programmed' to execute their desired functionalities when magnetic fields are applied. The made-in-NTU robots improve on many existing small-scale robots by optimizing their ability to move in six degrees-of-freedom (DoF) -- that is, translational movement along the three spatial axes, and rotational movement about those three axes, commonly known as roll, pitch and yaw angles. While researchers have previously created six DoF miniature robots, the new NTU miniature robots can rotate 43 times faster than them in the critical sixth DoF when their orientation is precisely controlled. They can also be made with'soft' materials and thus can replicate important mechanical qualities -- one type can'swim' like a jellyfish, and another has a gripping ability that can precisely pick and place miniature objects.
Machine learning guarantees robots' performance in unknown territory
This experiment is a proving ground for a pivotal challenge in modern robotics: the ability to guarantee the safety and success of automated robots operating in novel environments. As engineers increasingly turn to machine learning methods to develop adaptable robots, new work by Princeton University researchers makes progress on such guarantees for robots in contexts with diverse types of obstacles and constraints. "Over the last decade or so, there's been a tremendous amount of excitement and progress around machine learning in the context of robotics, primarily because it allows you to handle rich sensory inputs," like those from a robot's camera, and map these complex inputs to actions, said Anirudha Majumdar, an assistant professor of mechanical and aerospace engineering at Princeton. However, robot control algorithms based on machine learning run the risk of overfitting to their training data, which can make algorithms less effective when they encounter inputs that differ from those they were trained on. Majumdar's Intelligent Robot Motion Lab addressed this challenge by expanding the suite of available tools for training robot control policies, and quantifying the likely success and safety of robots performing in novel environments.
Machine learning guarantees robots' performance in unknown territory
This experiment is a proving ground for a pivotal challenge in modern robotics: the ability to guarantee the safety and success of automated robots operating in novel environments. As engineers increasingly turn to machine learning methods to develop adaptable robots, new work by Princeton University researchers makes progress on such guarantees for robots in contexts with diverse types of obstacles and constraints. "Over the last decade or so, there's been a tremendous amount of excitement and progress around machine learning in the context of robotics, primarily because it allows you to handle rich sensory inputs," like those from a robot's camera, and map these complex inputs to actions, said Anirudha Majumdar, an assistant professor of mechanical and aerospace engineering at Princeton. However, robot control algorithms based on machine learning run the risk of overfitting to their training data, which can make algorithms less effective when they encounter inputs that differ from those they were trained on. Majumdar's Intelligent Robot Motion Lab addressed this challenge by expanding the suite of available tools for training robot control policies, and quantifying the likely success and safety of robots performing in novel environments.
This 'squidbot' jets around and takes pics of coral and fish
"Essentially, we recreated all the key features that squids use for high-speed swimming," said Michael T. Tolley, one of the paper's senior authors and a professor in the Department of Mechanical and Aerospace Engineering at UC San Diego. "This is the first untethered robot that can generate jet pulses for rapid locomotion like the squid and can achieve these jet pulses by changing its body shape, which improves swimming efficiency." This squid robot is made mostly from soft materials such as acrylic polymer, with a few rigid, 3D printed and laser cut parts. Using soft robots in underwater exploration is important to protect fish and coral, which could be damaged by rigid robots. But soft robots tend to move slowly and have difficulty maneuvering.
Artificial intelligence method can rapidly and remotely detect fentanyl and derivatives
To help keep first responders safe, University of Central Florida researchers have developed an artificial intelligence method that not only rapidly and remotely detects the powerful drug fentanyl, but also teaches itself to detect any previously unknown derivatives made in clandestine batches. The method, published recently in the journal Scientific Reports, uses infrared light spectroscopy and can be used in a portable, tabletop device. Fentanyl is a leading cause of drug overdose death in the U.S. It and its derivatives have a low lethal dose and may lead to death of the user, could pose hazards for first responders and even be weaponized in an aerosol." Fentanyl, which is 50 to 100 times more potent than morphine according to the U.S. Centers for Disease Control and Prevention, can be prescribed legally to treat patients who have severe pain, but it also is sometimes made and used illegally. He said that rapid identification methods of both known and emerging opioid fentanyl substances can aid in the safety of law enforcement and military personnel who must minimize their contact with the substances.
Detecting Fentanyl and Derivatives Remotely Using AI and Spectroscopy
To help keep first responders safe, University of Central Florida researchers have developed an artificial intelligence method that not only rapidly and remotely detects the powerful drug fentanyl, but also teaches itself to detect any previously unknown derivatives made in clandestine batches. The method, published recently in the journal Scientific Reports, uses infrared light spectroscopy and can be used in a portable, tabletop device. "Fentanyl is a leading cause of drug overdose death in the U.S.," says Mengyu Xu, an assistant professor in UCF's Department of Statistics and Data Science and the study's lead author. "It and its derivatives have a low lethal dose and may lead to death of the user, could pose hazards for first responders and even be weaponized in an aerosol." Fentanyl, which is 50 to 100 times more potent than morphine according to the U.S. Centers for Disease Control and Prevention, can be prescribed legally to treat patients who have severe pain, but it also is sometimes made and used illegally.
Researchers develop AI to detect fentanyl and derivatives remotely
To help keep first responders safe, University of Central Florida researchers have developed an artificial intelligence method that not only rapidly and remotely detects the powerful drug fentanyl, but also teaches itself to detect any previously unknown derivatives made in clandestine batches. The method, published recently in the journal Scientific Reports, uses infrared light spectroscopy and can be used in a portable, tabletop device. "Fentanyl is a leading cause of drug overdose death in the U.S.," said Mengyu Xu, an assistant professor in UCF's Department of Statistics and Data Science and the study's lead author. "It and its derivatives have a low lethal dose and may lead to death of the user, could pose hazards for first responders and even be weaponized in an aerosol." Fentanyl, which is 50 to 100 times more potent than morphine according to the U.S. Centers for Disease Control and Prevention, can be prescribed legally to treat patients who have severe pain, but it also is sometimes made and used illegally.