ExoMars parachute testing moves forward

The parachute system that will help deliver the Rosalind Franklin ExoMars rover to Mars has completed the first full-scale high altitude drop test with redesigned elements following two unsuccessful tests last year. Parachute ...

Aerodynamicists reveal link between fish scales and aircraft drag

The team's findings have been published in Nature: Scientific Reports: "Transition delay using biomimetic fish scale arrays," and in the Journal of Experimental Biology: "Streak formation in flow over biomimetic fish scale ...

Fish, seaweed inspire slippery surfaces for ships

Long-distance cargo ships lose a significant amount of energy due to fluid friction. Looking to the drag reduction mechanisms employed by aquatic life can provide inspiration on how to improve efficiency.

Image: Letting a satellite breathe

This air intake collector is designed to harvest sufficient air particles as it skims the top of the atmosphere to fuel an "air-breathing" electric thruster. The aim is to help satellites to overcome atmospheric drag to operate ...

Scientists develop inexpensive method to produce E-sail tethers

Thin metallic tethers for Coulomb drag devices that tow satellites and spacecraft can now be produced more easily than before. Scientists of the Finnish Meteorological Institute have developed a method to produce multi-wire ...

Distortion isn't a drag on fluid-straddling particles

Some intriguing physics can be found at the interfaces between fluids, particularly if they are straddled by particles like proteins or dust grains. When placed between un-mixable fluids such as oil and water, a variety of ...

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