Category Archive: TechTuesday

Sep 11

DARPA/Boeing DiscRotor

Looks interesting but I think with the amount of trouble the V-22 Osprey had in development I don’t see this concept having an easy time of it.

Mar 27

Sand Flea – a Jumping robot by Boston Dynamics

Sand Flea is an 11-lb robot with one trick up its sleeve: Normally it drives like an RC car, but when it needs to it can jump 30 feet into the air. An onboard stabilization system keeps it oriented during flight to improve the view from the video uplink and to control landings. Current development …

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Feb 28

Test firing if the U.S. Navy’s experimental railgun.

Test firing if the U.S. Navy’s experimental railgun. A test shot fires from the Office of Naval Research-funded Electromagnetic Railgun prototype launcher located at the Naval Surface Warfare Center Dahlgren Division. The test shots begin a month-long series of full-energy tests to evaluate the technology. This prototype, developed by BAE, is the first of two …

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Sep 13

TechTuesday: Coilguns

Coilgun_animation

A coilgun is a type of projectile accelerator that consists of one or more coils used as electromagnets in the configuration of a synchronous linear motor which accelerate a magnetic projectile to high velocity. The name Gauss gun is sometimes used for such devices in reference to Carl Friedrich Gauss, who formulated mathematical descriptions of …

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Sep 06

TechTuesday: Adaptaive Camoflage

This video shows the ADAPTIV, an adaptive thermal signature management developed by BAE Systems in Sweden. The video shows clips form a recent test, demonstrating how the ‘invisibility cloak’ on the CV90 light tank turns the vehicle invisible, by blend into its surroundings. Other parts of the video show how the same system can be …

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Aug 30

TechTuesday: Pebble Bed Reactors

ReactorUnit

The pebble bed reactor (PBR) is a graphite-moderated, gas-cooled, nuclear reactor. It is a type of very high temperature reactor (VHTR), one of the six classes of nuclear reactors in the Generation IV initiative. Like other VHTR designs, the PBR uses TRISO fuel particles, which allows for high outlet temperatures and passive safety. The base …

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Aug 23

TechTuesday: Magnetoplasmadynamic thruster

An MPD thruster during test firing

The Magnetoplasmadynamic (MPD) thruster (MPDT) is a form of electrically powered spacecraft propulsion which uses the Lorentz force (a force resulting from the interaction between a magnetic field and an electric current) to generate thrust. It is sometimes referred to as Lorentz Force Accelerator (LFA) or (mostly in Japan) MPD arcjet. Generally, a gaseous fuel …

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