The tiles can be controlled to either match the temperature of the vehicle’s surroundings, or to mimic the thermal signature of an innocuous vehicle or object. Each tile contains a Peltier element, enabling it to be heated or cooled as required. BAE Systems developed ADAPTIV, a system consisting of hexagonal tiles installed on the outside of a military vehicle. Similar efforts have been made in the realm of thermal camouflage, intended to hide military vehicles from sensors in the infrared spectrum. Here, it’s shown switched off, and then mimicking a civilian vehicle from a saved bank of thermal signatures. Camouflage, So Hot Right Now ADAPTIV, developed by BAE Systems, uses hexagonal panels fitted with Peltier elements to alter the thermal signature of military vehicles.
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The rig also had huge power requirements, needing a diesel generator to supply enough current to run the many screens. The final effect achieved was one of mild camouflage at significant distance, but virtually useless at close to medium range. Any lag in the transmission of image from camera to screen can also spoil the effect when the object or its surroundings are moving.Ī test by Top Gear in 2012 did a great job of showing the limitations of this method, with a Ford Transit decked out with cameras and mostly covered in screens. Furthermore, current display technologies are often heavy and consume significant amounts of power. Additionally, resolution limitations and lens distortions serve to further reduce the viability of such methods. This can require an impractical number of cameras to achieve.
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Accurately capturing an object’s surroundings can be achieved with cameras, but a full 360 degree view is required in order to properly hide an object from all directions. However, many challenges have thus far prevented its practical use. By using cameras to image the surrounding area, the screens can be used to display what is on the other side of the object to an observer, effectively hiding the object from view. The simplest concept of active camouflage is to cover an object, person, or vehicle in screens.
Top Gear’s 2012 attempt to camouflage a Ford Transit van passes muster at a glance from a good distance away. Active camouflage is a two-part process first, the surroundings must be perceived, and secondly, the object to be hidden must change its appearance to match. This is more akin to the way animals like squid and chameleons alter their appearance to match their surroundings. At our current level of technology, more practical efforts focus on what is known as active camouflage. So far, these devices largely remain on paper only, with a few experiments able to effectively “cloak” objects from precise wavelengths and certain vantage points. Much investigation has been done into advanced metamaterials that are able to interact with varying wavelengths of light, and through some very advanced physics, hide objects from view. Many cloaking devices have been theorized over the years. We’ll take a look at the underlying concept behind such devices below, and look at how this work furthers the state of the art in the field. A device which detects the nature of its surroundings and changes its own properties to blend in may be complex, but a multitude of examples in the animal world show that it’s not impossible to achieve.Ī team from Seoul National University recently developed a flexible material designed in part as a flexible “cloaking” material. An invisibility cloak may seem like science fiction, but despite that, many scientists and engineers have put much time into developing the concept, pushing it closer to reality.
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