Does landing with a tail wind increase landing distance?
4) Increased Landing DistanceThe same goes for landing. For each 2 knots of tailwind in a C172S, add an additional 10% to your landing distance.
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As you enter your flare on landing with a tailwind, you'll be traveling much faster over the ground than you're probably used to in your airplane, due to a high groundspeed. Maintaining directional control can be difficult, especially with a quartering tailwind.
Landing - The ground speed at touchdown will be greater than usual and any float tendency will result in a long landing. The stopping distance will be significantly increased due to the higher groundspeed and, in combination with a long landing, could easily result in a runway excursion.
A headwind, in effect, increases the performance length, the effective length, of our landing surface in proportion to the speed of the wind. A 10 knot headwind effectively increases runway length by 10%. A 1500' runway with 10 knots of headwind effectively becomes a 1600' runway (1500' x 1.1 = 1650').
Runway slope (gradient) has a direct effect on landing distance. For example, a 1 percent downhill slope increases landing distance by 10 percent (factor of 1.1). However, this effect is accounted for in performance computations only if the runway downhill slope exceeds 2 percent.
Because headwind increases the lift, pilots prefer to land and take off in headwind. Tailwind is wind blowing from behind the aircraft. It reduces the lift and aircraft generally avoid taking off or landing in tailwind.
There are special cases such as headwinds, where the wind acts opposite to the planes direction. Other special cases include a tailwind, where the plane and wind are acting in the same direction. As you may suspect, the speed of the aircraft increases when there is a tailwind and decreases when there is a headwind.
Effects. Tailwind Operations have a detrimental effect on aircraft performance. Take Off - The take off run will be longer and the maximum allowable take off weight for a specific runway and temperature may have to be reduced.
On take-off and landing, headwinds are good because they allow you to use a shorter runway. In flight, headwinds are bad because they slow you down and require that you use more fuel to get to your destination. Conversely, tailwinds are bad on take-off and landing, but are good in flight.
There's no doubt that while you can land with a tailwind, it increases your risk of things going wrong. But at the same time, most GA airplanes have performance charts that let you calculate takeoffs and landings with up to 10 knots of tailwind.
The Boeing 747 Jumbo Jet reached a top speed of 825 miles per hour which was boosted by a strong jet-stream and tailwind of over 200 miles per hour. Aircraft that cross the Atlantic between North America and Europe flying eastbound are usually boosted by a tailwind that can shave several hours off their flight time.
That flight set a record for the fastest subsonic transatlantic commercial airline flight — 5 hours and 13 minutes, thanks to a 202 mph tailwind. For reference, the speed of sound is 760 mph; but the plane did not break the sound barrier.
With this in mind, horizontal winds (also known as “crosswinds”) in excess of 30-35 kts (about 34-40 mph) are generally prohibitive of take-off and landing. As far as how this happens, it depends on where you are in flight.
Many airplanes have limitations on the amount of crosswind that is allowed for takeoff and landing. In the case of some airliners, it's around 40kts or about 45mph or 21 Mps. A 15 mph tailwind is good. A 15 mph headwind is not so good, but is usually no big deal.