Mechanical

The US Defense Advanced Research Projects Agency (DARPA) is planning to apply innovation and technology from the commercial electric vertical take-off and landing (eVTOL) sector to a next-generation VTOL unmanned aircraft system (UAS).   Many ship-launched fixed-wing drones, which boast useful range for sea scouting, launch from rails, and land …

Introduction The electric vehicle (EV) revolution is in full swing, and at the heart of this transformative shift lies the remarkable evolution of electric motor technology. From their humble beginnings, electric motors have made astonishing progress, driving profound advancements in the performance of electric vehicles. In this article, we’ll delve …

Innovation knows no bounds, and the world of materials engineering is no exception. Among the most exciting developments in recent years is the emergence of mechanical metamaterials, which are reshaping the way we perceive and utilize materials. With their unique properties, engineered structures, and limitless potential, mechanical metamaterials are unlocking …

Space elevators are a hypothetical type of space transportation system that could potentially revolutionize the way we travel to and from space. They work by using a long, strong cable anchored to the Earth’s surface and extending into space. This cable would be held in place by the Earth’s gravity …

Aerial refueling, also referred to as air refueling, in-flight refueling (IFR), air-to-air refueling (AAR), and tanking, is the process of transferring aviation fuel from one military aircraft (the tanker) to another (the receiver) during flight. The procedure allows the receiving aircraft to remain airborne longer, extending its range or loiter …

The world’s oceans are vast and deep, and submarines have been a vital component of naval forces for decades. These underwater vessels can operate silently, dive to great depths, and strike from unexpected directions, making them an incredibly effective tool in modern warfare. However, the ability of submarines to remain …

The function of the propulsion system is to produce thrust, which is the force that moves a rocket through air and space. Different propulsion systems generate thrust in different ways, but always through some application of Newton’s third law of motion. In any propulsion system, a working fluid is accelerated …

A parachute is a device used to slow the motion of an object through an atmosphere by creating drag (or in the case of ram-air parachutes, aerodynamic lift). Parachutes are usually made out of light, strong fabric, originally silk, now most commonly nylon. They are typically dome-shaped, but vary, with …