In fixed wing aircraft, which one is a longer distance [details follow]?

-a. length of takeoff run

b. length of landing run in takeoff configuration



just a rule of thumb guesstimateThere is no "rule of thumb" unless you get more specific about the type of airplane you're interested in. It depends on the thrust to weight ratio of the airplane which affects its acceleration, and it's wing loading which affects its takeoff and landing speeds. Some fighters can take off in under a thousand feet but need thousands of feet to land. Airliners accelerate more slowly and usually require more distance to take off than to land. There are general aviation airplanes that can take off and land in almost their own length. Those are distances on the ground and assume typical weights. Heavy or light airplanes can change the distances dramatically.



The published required takeoff and landing distances include safety factors for possible malfunctions or pilot technique, a pilot can't always put it down on the numbers, and that changes things.



Some airplanes are less affected by weather and runway conditions so that can also change the answer.



I apologize for giving a rather complicated answer to what you thought was a simple question.
What you are asking is how the distance it takes the engine to accelerate the plane to take off speed compares to the distance it takes the brakes to stop the plane from roughly the same speed.



A rule of thumb would not apply, it's going to be dependent on the power loading and brake efficiency of the particular model. In most light planes, the landing distance would be the shorter distance.
My little L-21B airplanes (I got two of these which are used in my glider and banner tow operation) are capable of spectacular takeoff distance - The L-21B is the military version of the PA18-150 and is capable of takeoff in only 200 feet distance... but its landing distance is 350 feet - Not too many general aviation airplanes are capable of such spectacular numbers - Stalls at 35 KIAS with full flaps -



http://www.pilotfriend.com/aircraft%20pe鈥?/a>



My only "rule of thumb" with these is "if I landed there, I can takeoff from there" -

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