Education- Interesting facts 21 October 2021

how do planes fly

🤔 How it works ……..

HOW DO PLANES NAVIGATE ?✈️🛩️🛬

Finding the way from one place to another is called NAVIGATION. Moving of an
aircraft from one point to another is the most important part for any kind of mission.
Plotting on the paper or on the map a course towards a specific area of the earth.

NAVIGATION METHODS

There are three main methods of air navigation.

There are:
(a) Pilotage
(b) Dead Reckoning
(c) Radio.

(a). Pilotage or Piloting is the most common method of air navigation. In this method, the pilot keeps on course by following a series of landmarks on the ground. Usually before take-off, the pilot draws a line on the aeronautical map to indicate the desired course. He/ She notes down various landmarks on track, such as highways , railroad
tracks, rivers , bridges etc . As the pilot flies over/ near each landmark, he checks the deviation from the planned track and corrects his course.

(b). Dead Reckoning is the primary navigation method used in the early days of flying.
It demands more skill and experience than pilotage does. It is based on time, distance, speed of the aircraft and direction. The pilot must know the distance from one point to the next and the magnetic heading to be flown. He decides a speed to be maintained keeping in mind the safety and efficiency of the aircraft, thereafter calculates the time to know exactly to reach the distination. In the air, he uses compass to keep the plane heading in the right direction. Dead reckoning is not always a successful method of navigation because of changing wind direction.

(c). Radio Navigation is used by almost all pilots. Pilots can find out from an aeronautical chart what radio station they should tune to in a particular area. They can then tune their radio navigation equipment to a signal from this station. A needle on
the navigation equipment.

An autopilot is a flight control system that allows a pilot to fly an airplane without continuous hands-on control of the airplane. It allows the pilot to focus on higher-order tasks such as navigating, communicating with air traffic control, planning for weather contingencies and rerouting associated with any kind of emergency circumstance.

An autoflight system works by sending signals to the flight control system. The pilot inputs what type of mode they want, like a heading hold mode or an altitude hold mode.

😳Why❓❓❓

Why colour of human stool is brownish yellow

The color is the result of what you eat and how much bile is in your stool. Bile is a fluid your liver makes to digest fats. It starts out as a yellowish green color. But as the pigments that give bile its color travel through your digestive system, they go through chemical changes and turn brown.

Healthy stool is usually considered a soft, formed bowel movement that is typically brownish in color,” “Stool may be indicative of a health problem if someone notices a change in their bowel habits with constipation or diarrhea, or notices a change in color of their stools.

Bile is a fluid that is made and released by the liver and stored in the gallbladder. Bile helps with digestion. It breaks down fats into fatty acids, which can be taken into the body by the digestive tract. Bile salts are released into our stools by your liver, giving the stools a brown color. If our liver is not producing enough bile, or if the flow of the bile is blocked and not draining from our liver, our stools may become pale or clay-colored. Having pale stools once in a while may not be a cause for concern.

💁🏻‍♂️ GK TODAY

21 October: National Police Commemoration Day is observed every year on October 21 to remember remembering the brave policemen who sacrificed their lives while discharging their duties.

International Standards Organization (ISO)* is an international body providing guidelines for companies in terms of product quality, health, and performance. An ISO registration enhances the reputation of your service or product. There are different types of ISO certification like ISO 9001, ISO 14001, ISO 5001, etc.

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BORN TODAY 🐣💐

Shri Krishna Sinha (21 October 1887 – 31 January 1961), was the first Chief Minister of the Indian state of Bihar (1946–61). Except for the period of World War II, Sinha was chief minister of Bihar from the time of the first Congress Ministry in 1937 until his death in 1961. Along with the nationalists Rajendra Prasad and Anugrah Narayan Sinha, Singh is regarded among the Architects of Modern Bihar.

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Work or labour late into the night

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