look news india
Why airplanes cannot fly due to excessive heat: While the rainy season is going on in North India, Jammu and Kashmir and Leh-Ladakh are experiencing severe heat. This year's severe heat has broken the record of 132 years in the Kashmir valley. At present, the situation is that the temperature of Ladakh and Kashmir is much higher than Delhi-Mumbai and the hot states of North India. Schools have been closed in some places due to heat. Let us know why flights get cancelled when there is excessive heat.
Why can't planes fly because of heat?
Due to heavy rain or snowfall, flights often face difficulty in taking off. Due to this, flights have been canceled due to heat in Leh. Last Sunday, 4 flights were canceled at Leh Airport. Earlier on Saturday, the flight coming from Delhi could not land at Leh Airport. Currently, the temperature in Leh has reached close to 35 degrees Celsius, which is an unusually hot temperature for this area.
A pilot has to consider factors such as weather, temperature, pressure, wind speed and direction to fly a plane. When any one factor reaches an extreme, it may take time for the plane to take off or the entire flight may be cancelled.
Difficulty in landing the plane due to hot air
During take-off, the pilot has to lift the heavy plane into the air against the downward force of gravity. Air is used to overcome the force of gravity and move the plane upward. That is, the heavier the plane, the more air pressure the pilot needs to fly. But in hot temperatures, the plane does not get this thrust. The hotter the air, the more it expands. The expansion of air reduces the number of air molecules required to push the plane up. Therefore, the engine does not get the required thrust.
Why can flights be operated in Delhi despite high temperatures?
The temperature in Leh is below 40 degrees. The plane can take off even if the temperature in Delhi is more than 40 degrees. Actually, Leh airport is located at an altitude of 11 thousand feet. There is no moisture in the air. Oxygen is also less, so the weather remains dry. Due to this, the plane does not get thrust. On the other hand, the weather in Delhi is quite different from Leh. Here the air is heavy due to humidity. Therefore, there is no problem in landing the plane.
A 3 degree increase in temperature results in a 1 percent reduction in lift for an aircraft
There are many factors involved in flying an airplane. If the air is not able to provide thrust to the plane, the pilot uses other factors to push the plane into the air. For every 3 degree Celsius increase in temperature, an airplane gets 1 percent less lift. To deal with this problem, the plane has to increase its speed while flying. But for this, the plane needs a long runway. For example, if an airplane has to take off in a temperature of 20 degrees Celsius, it needs a runway of 6500 feet. And the same plane will need a runway of 8200 feet to take off at 40 degrees Celsius.
If an aircraft has to take off from a shorter runway, the weight of the aircraft has to be reduced. In this, airlines usually reduce the weight of luggage or passengers, which causes inconvenience to the passengers and the airlines have to bear losses.
