Smart Nanofluid for RADAR evading Stealth applications
Narasimha Varadan.M1, Sandeep Khanna1, Vikram S2,*
1Department of Mechanical Engineering, SASTRA University,Thanjavur,India
2,*Polymer Nanotechnology Centre,B.S.Abdur Rahman University,Chennai, India
Abstract
Nano technology has high impact on various fields such as Aerospace, Medicine,
electronics and food processing. In this work, we report the potential applications of Ferro
fluids (nano scale superparamagnetic particles) for Stealth technology. There are several
techniques used in the stealth aircrafts to evade the RADAR. Iron ball paints (micro
spheres of ferrite, carbonyl iron) were incorporated with aircraft paints and coated on the
surface of the aircrafts; the material absorbs the EM wave and dissipated the energy in the
form of heat. The Magnetic nanoparticles [MNP] (Fig.1) play an important role for this
application especially in the form of Ferrofluids (Fig.2), in which the particles were
suspended in fluid by adding a surfactant. The synthesized nanoparticles were spherical in
shape (Fig.3) with 30 nm size and saturation magnetization value 70 emu/g which exhibits
superparamagnetic behaviour, these Magnetic Nanoparticles have wide advantage over
micro particles because of its high surface to volume ratio. The nanoparticles were
suspended in an oil based surfactant and they can be easily composited with Polyurethane
[PU] paints. Preliminary studies confirms that the MNP+PU exhibits better affinity after
composite process and Which can be spray coated on the surface of the aircrafts for
Stealth applications.
Fig.1
Fig.2
Fig.3