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A Boeing 747 at 100 m distance can have a sound pressure level of L = 130 dBSPL.
Never forget to tell the distance of the measuring microphone from the sound source, because the closer you are the louder it is.
The sound pressure level decreases by 6 dB per doubling of distance from the source to 1/2 (50 %) of the sound pressure initial value.
The sound pressure decreases inversely as the distance increases with 1/r from the sound source.
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What is the max take-off weight for a Boeing 747?
The Maximum Take-Off Weight for a Boeing 747-100 is 333, 390kg; a Boeing 747-200 and 747-300 is 377,842kg; a Boeing 747-400 is 396,890kg; a Boeing 747-400ER is 412,775kg and the Boeing 747-8I is 442,253kg.
Which is bigger a Boeing 747 or a Boeing 757?
747
Who invented a Boeing 747?
Boeing created the Boeing 747.
Who is the Boeing 747 builder?
Boeing 747's are manufactured by Boeing Commercial Aeroplanes.
What company made the Boeing 747?
The Boeing 747 is manufactured by Boeing Commercial Airplanes.
What does 747 mean in Boeing 747?
747 has no particular meaning, it follows in Boeing's naming convention.
What is Boeing 747-400?
A Boeing 747-400 is the largest airplane that Boeing make. It has four engines and was designed in 1988. It is the second most recent Boeing 747 that Boeing have made.
When was Boeing 747 invented?
Joseph Sutter is the father of the Boeing 747
How many engines does a Boeing 747 have?
A Boeing 747 has four engines.
Are Boeing 747 still being made?
The Boeing 747-400 and the Boeing 747-8 are still being made but the Boeing 747-100, -200 and -300 have been discontinued.
How many engines does the Boeing 747 have?
The Boeing 747 has at least 4 engines.
Is the Boeing 777 louder than the Boeing 747?
no, because boeing 777 has more advanced technology than the boeing 747
