to save money on making military aircraftinvisible to radar, an inventor decides to coatthem with a nonreflective material having anindex of refraction of 1.20, which is betweenthat of air and the surface of the plane. this, hereasons, should be much cheaper thandesigning stealth bombers. (a) what thicknessshould the coating be to inhibit the reflection of4.00-cm wavelength radar? (b) what isunreasonable about this result? (c) whichassumptions are unreasonable or inconsistent?



Answer :

index of refraction (n) = 1.20 wavelength = 4 cm

What is wavelength radar?

Radar used to measure wind waves is called wave radar. There are several instruments available that are based on various ideas and methods, and they are all frequently termed.

In situations where it's critical to avoid direct contact with the water surface and structural interference, instruments based on radar remote sensing techniques have grown in popularity. Wave measurements from an offshore platform in deep water are an example of a situation where anchoring a wave buoy would be extremely challenging due to rapid currents. Another intriguing situation is that of a ship in motion, where it is extremely impracticable to have equipment in the sea

According to the question:

using the formula for minimum thickness of coating to inhibit reflection: thickness = λ4 thickness = 4 cm

4×1.20 thickness = 0.833 cm

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wavelength = 4 cm index of refraction (n) = 1.20

What exactly is wavelength radar?

Wave radar is a type of radar that is used to measure wind waves. There are several instruments available that are based on diverse concepts and methodologies, and they are all often referred to.

Instruments based on radar remote sensing techniques have increased in popularity in circumstances where it is vital to avoid direct contact with the water surface and structural interference. Wave measurements taken from an offshore platform in deep water are an example of a circumstance in which mooring a wave buoy would be exceedingly difficult owing to strong currents. Another fascinating circumstance is that of a ship in motion, when having equipment in the sea is exceedingly impractical.

Using the formula for minimal coating thickness to reduce reflection: 4 is the thickness 4 cm thickness

4x1.20 mm thick = 0.833 cm

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