CULTURAL QA 06-2023-19 Q1 Why does an airplane lose altitude soquickly as it flies over water?
A1 Vishnu Ravi, Aviation Enthusiast |Content Creator 19h An aircraft does not swiftly descend when flying overbodies of water. However, there exist various factors that cancontribute to the rapid loss of altitude in an aircraft, including: Air density: As you ascend, the atmosphere becomes less dense,resulting in reduced friction and drag on the plane. At higher altitudes, the aircraft requires lessthrust to propel forward. This principle applies whether the plane isflying at a low or high altitude; low altitudes can be likened to syrup,while high altitudes resemble water. Turbulence: Turbulence occurs when hot air risesfrom the earth and explains why gliders can remain airborne for extendedperiods without the aid of a motor. Turbulence is less prevalent over water compared to land, as theprimary cause of turbulence is the upward movement of hot air from the ground.Water facilitates better heat dispersion. Slipping:Pilots can employ a technique called a forward slip to rapidly reducealtitude. This maneuver involves lowering one wing and applying substantialopposite rudder. During the slip, the aircraft's nose should be maintained wellbelow the horizon. Loss of cabin pressure: A sudden drop in cabinpressure can lead to objects being expelled from the breach, the internal temperatureplummeting to -30°C or below, and the water vapor in the air condensing into adense mist. Airliners operate at altitudes around9-10,000m, where atmospheric pressure is merely a third of that at sea level. The primary concern is the lackof oxygen, which can cause individuals to lose consciousness withinapproximately 15 seconds if they fail to don their oxygen masks. In conclusion, whenan airplane traverses over water, it does not experience swift decreases inaltitude. However, factors such as air density, turbulence,slipping, and loss of cabin pressure can all contribute to the rapid loss ofaltitude in an aircraft. Q2 Can pilots adjust thrust levels duringtakeoff? A2 Erika Fernandez, Experience inAviation Field Sat Yes sometimespilots adjust thrust levels during take-off is to save engine wear and fuelconsumption. Most take-offs use “derated” thrust, whichmeans that the engines are set to produce less than their maximum availablepower. This reduces the stress and temperature on the engine components,extending their life and reliability. It also lowers the operating costs andthe environmental impact of the flight. Another reasonthat pilots adjust thrust levels during take-off is to adapt to changingsituations or emergencies. For example, if the runway is shorter than expected, or if there is an obstacle at theend of it, pilots may increase the thrust level to achieve a fasteracceleration and a higher climb rate. Conversely, ifthere is a problem with one of the engines, or if there is a need to abort thetake-off, pilots may reduce or cut off the thrust level to slow down or stopthe aircraft. The way that pilotsadjust thrust levels during take-off depends on the type of aircraft and itsengine control system. Some aircraft have manual thrust levers that allowpilots to set the desired power output by moving them forward or backward.Other aircraft have automatic or electronic thrust levers that set the poweroutput according to a pre-selected mode or limit. For example, some jetaircraft have different modes for take-off power, such as “ALT T/O”, “T/O”, and“E-T/O”, which give different percentages of thrust when the levers are in acertain position. Pilots can also override these modes by moving the leverspast a certain point. Q3 What vitamins are in khajoor? A3 Arpita Shukla, Lives in PANKI,KANPUR (2023–present)18h Dates, also known as khajoor,are a good source of several vitamins including: 1. Vitamin B6: Dates are rich in vitamin B6, whichhelps in the production of red blood cells and supports brain function. 2. Vitamin A: Dates contain vitamin A, which isessential for maintaining healthy vision, skin, and immune system. 3. Vitamin K: Dates are a good source of vitamin K,which plays a role in blood clotting and bone health. 4. Niacin: Dates also contain niacin, which isimportant for energy production and helps maintain healthy skin and nerves. 5. Folate: Dates are a good source of folate, whichis important for cell growth and development, especially during pregnancy. Overall, dates area nutrient-dense food that can provide several important vitamins and mineralsto support overall health Q4 Why do pilots turn on first engine 2and then engine 1? A4 Rebecca Williams, Experience inAviation Sat Engine 2 isusually on the right side of the aircraft, opposite to the air bridge or theboarding door. This reduces the risk of fire or damage to the ground personnel orequipment near the left side of the aircraft. Engine 2 powers the yellow hydraulic system, whichpressurizes the parking brake and allows the aircraft to steer and taxi on oneengine. This saves fuel and reduces noise and emissions. Engine 2 also powers an important transformer-rectifier(TR) unit that provides electrical power to some of the avionics andinstruments. This ensures that these systems are powered up and running in caseof a loss of external or internal power during start. To start engine 2, pilots usually use the auxiliary powerunit (APU), which is a small turbine engine in the tail of the aircraft thatgenerates high-pressure air. Thisair is used to spin the blades of engine 2 and create airflow through it. Then,fuel is introduced and ignited by a spark plug, and the engine starts to run onits own. The same process is repeated for engine 1, using either the APU orcross-bleed air from engine 2. Q5 What are the Bad Effects Of EatingOnion? A5 Techno Techrz,5h While onions aregenerally considered a healthy vegetable and an important ingredient in manycuisines, they can have somenegative effects for certain individuals. Here are a few potentialadverse effects of eating onions: 1. Digestive issues: Onions contain a type ofcarbohydrate called fructans, which some people may have difficulty digesting.These individuals may experience symptoms such as bloating, gas, stomach pain,and diarrhea after consuming onions. 2. Acid reflux and heartburn: Onions are known totrigger acid reflux and heartburn in some people, particularly those who areprone to these conditions. The high levels of certain compounds in onions, suchas sulfur, can irritate the digestive system and lead to discomfort. 3. Allergic reactions: Although rare, someindividuals may be allergic to onions. An onion allergy can cause symptoms suchas itching, hives, swelling, and in severe cases, difficulty breathing. If youexperience these symptoms after consuming onions, it is important to seek medicalattention. 4. Bad breath: Onions are notorious for causing badbreath due to the presence of sulfur compounds. These compounds are releasedwhen onions are cut or crushed, and they can linger in the mouth even afterbrushing or rinsing. 5. Interaction with certain medications: Onionscontain compounds that can interfere with the metabolism of certainmedications, particularly those broken down by the enzyme cytochrome P450. Thisinteraction can affect the effectiveness or increase the side effects of thesemedications. If you're taking any medications, it's advisable to consult yourhealthcare provider regarding potential interactions. It's important to note that these effects are notexperienced by everyone, and many people can consume onions without any issues.Onions also offer numerous health benefits, including being a good source ofvitamins, minerals, and antioxidants. As with any food, moderation and listening to your body'sreactions are key to determining how onions affect you personally. All the above QA are from Quora website on 19-06- 2023. Quora answers need not be 100% correct answers . Compiled and posted by R. Gopala krishnan, on 19-06-2023 -- You received this message because you are subscribed to the Google Groups "Thatha_Patty" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/thatha_patty/1729322015.1236234.1687163615118%40mail.yahoo.com.
