Nanotechnology

Context
Space environment is very aggressive (radiations, temperature gradients, etc.) and can be extremely harsh for materials. Conversely, space application engineering is always seeking new ways to reduce weight. Nanotechnologies appear to help on both challenges. Applications are presented hereby.
Nanosensors
When exposed to gases (for instance NO3), a significant change in nanotube resistivity can be observed. This property allowed the development of sensor on a nanoscale level. When coated with different material, nanotubes can selectively detect a broader range of gases.
Not only can nanotubes detect a very small amount of matter, but their thermal stability in inert environments makes them very robust.
Rocket Fuel
Metallic nanoparticle could successfully be used in order to enhance combustion (nano Aluminium). Used as additives, these particles change the combustion reactive route and make it more efficient. Though, bigger sized particles (ultra-fine particles) are still preferred in modern propulsion systems.
Spacecrafts & Aircrafts
Nanotubes were successfully incorporated to polymers, allowing the design of landing gear tires with a significantly increased wear resistance. Moreover, nanotube incorporating polymer nanocomposites present strong abilities to shield electromagnetic fields, radiations and UV.