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Aviation/Flying/Bigger planes speed slower than smaller ones while landing/take-off

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Expert: - 1/10/2007


Question
When I see planes take-off or land, huge planes like 747 look like they are kind of floating, or seem like their speed is slow. Whereas smaller plans, 737 and others, their speed looks more. Is this only because of the size or there actually have speed difference?

Answer
The difference you observe is an illusion caused by the size of the airplanes, as you suspected.  Try this experiment: pick two easily visible landmarks, such as a hill and a tower, that airplanes will pass in front of (or behind) while taking off or landing.  Note the time it takes the nose of a 747 to travel from one landmark to the next, then do the same with a smaller airliner.  You will find that they are both traveling at approximately the same speed.

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Jeff Davis

Expertise

I can answer questions about general aviation, learning to fly, how to get started, and how to buy an airplane. Area of specialty is aerobatic flying. I do not have any expertise in flight training opportunities for students outside the USA, and I am not qualified to offer advice on becoming an airline pilot.

Experience

I am no longer active in aerobatic flying, but was formerly a professional airshow performer and aerobatic flight instructor, with extensive experience in Decathlon and Pitts aircraft and light experience in other types. I also competed in IAC sanctioned competition through the Advanced level.

Organizations
No longer active, past member of Experimental Aircraft Association, International Aerobatic Club, International Council of Air Shows, and Aircraft Owners and Pilots Association.

Publications
World Airshow News

Education/Credentials
Commercial and instrument rated, certificated flight instructor since 1986

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