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As with most planes, the B-2's noisiest component is its engine system. But unlike a passenger jet or B-52, the B-2's engines are buried inside the plane. This helps muffle the noise. The efficient aerodynamic design helps keep the B-2 quiet as well, because the engines can operate at lower power settings.
The engine system also works to minimize the plane's infrared signature. Infrared sensors, including those on heat-seeking missiles, typically pick up on hot engine exhaust. In the B-2, all of the exhaust passes through cooling vents before flowing out of the rear ports. Putting the exhaust ports on the top of the plane further reduces the infrared signature, since enemy sensors would most likely scan below the plane.
Originally posted by SLAYER69
Did anyone else notice that for a plane that size and low altitude how relatively quieter it is when compared to an airliner of similar size and height would have been?
Originally posted by SLAYER69
Did anyone else notice that for a plane that size and low altitude how relatively quieter it is when compared to an airliner of similar size and height would have been?
Originally posted by tooo many pills
reply to post by SLAYER69
Yeah, I just read up a little on that.
As with most planes, the B-2's noisiest component is its engine system. But unlike a passenger jet or B-52, the B-2's engines are buried inside the plane. This helps muffle the noise. The efficient aerodynamic design helps keep the B-2 quiet as well, because the engines can operate at lower power settings.
The engine system also works to minimize the plane's infrared signature. Infrared sensors, including those on heat-seeking missiles, typically pick up on hot engine exhaust. In the B-2, all of the exhaust passes through cooling vents before flowing out of the rear ports. Putting the exhaust ports on the top of the plane further reduces the infrared signature, since enemy sensors would most likely scan below the plane.
www.howstuffworks.com...
Pretty sweet, if true
edit on 13-12-2010 by tooo many pills because: (no reason given)