How is an airplane hull treated to reduce drag?
It is painted over.
The contribution of paint roughness to air resistance is only 0.3%. However, after painting, the aircraft is still coated with a layer of varnish 30-50 microns thick. The varnish prevents dirt and insects from sticking to the hull, which affects the resistance.
A painting technique is already being tested that leaves thin grooves in the paint. They attenuate transverse turbulent air movement, which saves about 1% fuel.
And researchers are working on active "shark scale" type coatings capable of adjusting to the geometry of turbulent vortices thousands of times per second. This can reduce air friction by 30%.
#yuvrajmishra #airplane
It is painted over.
The contribution of paint roughness to air resistance is only 0.3%. However, after painting, the aircraft is still coated with a layer of varnish 30-50 microns thick. The varnish prevents dirt and insects from sticking to the hull, which affects the resistance.
A painting technique is already being tested that leaves thin grooves in the paint. They attenuate transverse turbulent air movement, which saves about 1% fuel.
And researchers are working on active "shark scale" type coatings capable of adjusting to the geometry of turbulent vortices thousands of times per second. This can reduce air friction by 30%.
#yuvrajmishra #airplane
How is an airplane hull treated to reduce drag?
It is painted over.
The contribution of paint roughness to air resistance is only 0.3%. However, after painting, the aircraft is still coated with a layer of varnish 30-50 microns thick. The varnish prevents dirt and insects from sticking to the hull, which affects the resistance.
A painting technique is already being tested that leaves thin grooves in the paint. They attenuate transverse turbulent air movement, which saves about 1% fuel.
And researchers are working on active "shark scale" type coatings capable of adjusting to the geometry of turbulent vortices thousands of times per second. This can reduce air friction by 30%.
#yuvrajmishra #airplane
