Q1 How will they fly empty? Initially, many airlines used their limited number of international flights for “repatriation” – i.e., to bring their citizens back home as travel shut down. But as time passed and most people got back to their home countries, carriers realized there was still a significant revenue opportunity from flying cargo, either with or without passengers in the aircraft.
Much of the overall capacity of an airliner is in the cargo hold, located below the passenger deck – and without passengers’ baggage, a lot more of that space is available for freight. Not only did airlines stuff their cargo holds to capacity, but they started to load freight into the passenger cabins – sometimes tying it onto the seats, and sometimes taking the seats out altogether, if their governmental aviation authorities allowed it. Q2 Replacement if required the machine will warn and indicate, and till then aquaguard needs no change. Q7 Oxidation will corrupt; Iron hence is quoted with the Zinc to protect the red oxide. But Zinc will rust faster than the iron; if so what is the use of the quote? Quoting can be easily replaced hence used. KR IRS 31723 On Sun, 30 Jul 2023 at 01:17, 'gopala krishnan' via iyer123 < [email protected]> wrote: > *CULTURAL QA 07-2023-30* > > Q1 Why do some airlines fly their planes even without passengers > on board? > > A1 Vishnu Ravi,Aerospace Engineer | Aviation Enthusiast & > Content CreatorTue > > Discover the hidden genius behind airlines operating *empty planes, a > strategy that may seem perplexing at first glance but is, in fact, a > well-thought-out approach aimed at securing their success*. Delve into > the reasons airlines opt for this unconventional tactic and be amazed by > its brilliance. > > Protecting Airport Slots: It's a high-stakes game, and airlines are > playing it smart. They fly empty planes to protect their precious airport > slots, ensuring they retain their scheduled time on lucrative routes. By > keeping these slots occupied, they maintain their foothold in the industry > and pave the way for future, fully-booked flights. > > Logistics in Play: There's more to this seemingly empty journey than > meets the eye. Airlines carefully calculate their decisions, *considering > factors beyond mere passenger numbers. From intricate maintenance schedules > to planning for the next day's flights* and weather-induced > contingencies, every aspect is meticulously evaluated. Moreover, the > presence of valuable cargo in the holds further justifies these flights > economically. > > Strategic Repositioning: Have you ever wondered why certain flights > appear almost deserted? The answer lies in strategic repositioning. Some > flights are designed primarily to relocate airplanes for their morning > departures. These late-night journeys from major hubs to smaller cities may > have limited bookings, but they are essential for ensuring that the next > day's flight runs at full capacity. > > Cargo Revenue: While passengers may be light, cargo holds are anything > but. Airlines capitalize on the potential of carrying substantial cargo on > these flights, reaping substantial revenue that outweighs the cost of > flying the plane. This clever business maneuver keeps the financial scales > perfectly balanced. > > Optimized Safety Measures: In an ever-changing world, airlines prioritize > passenger safety above all. Limited social distancing measures don't imply > a compromise on safety. Instead, airlines have adopted comprehensive safety > protocols, such as mandatory mask-wearing, which ensure a secure travel > experience. This enables airlines to accommodate more passengers while > maintaining a safe environment. > > In conclusion, the mystery behind airlines flying empty planes is now > unveiled. With a strategic vision and focus on economic viability and > passenger safety, airlines navigate the complexities of the aviation > industry with finesse. So, the next time you see an apparently empty > flight, know that it's a well-crafted masterpiece, geared towards ensuring > a successful future for the airline and a comfortable journey for its > passengers. > > *My note- I recollect the instance of a Gulf air* operated with single > passenger from Chennai-Dubai because, the flight had to pick up full > capacity passengers from Dubai to Chennai on return. > > Q2 Is it necessary to change Aquagard water purifier elements > after the use of 6,000 liters of water? > > A2 Gopala Krishnan, Retired AGM BSNL > > I am writing this answer from Chennai, India. Here more than the quantity > of filtered water by the unit, *Once a year all filters are changed, once* > a quarter paper filters are changed by the maintenance staff. *Cleaning > of over head tank at least once a quarter is important.* > > Average consumption per day is calculated about 15 liters. So in a month > itself 450 liters are filtered. So your question is correct. > > *If the filtering is more than that, even earlier replacement of elements > must be required.* > > Mostly in India power supply unit is damaged due to lightening, so even a > year 2–3 times they are replaced > > Q3 Are there any eco-friendly septic tank pumping options > available? > > A3 Rajasekhar Gundala, Former Engineer Jul 23 > > Yes, there are eco-friendly septic tank pumping options available that > prioritize environmentally conscious practices. Here are a few examples: > > 1. Pumping Companies Using Biodiesel: Some septic tank pumping companies > have transitioned their fleet vehicles to run on biodiesel fuel. Biodiesel > is a renewable fuel source that produces fewer emissions and has a lower > carbon footprint compared to traditional diesel fuel. > > 2. Efficient Pumping Practices: Eco-friendly pumping companies may employ > practices that minimize water usage and disruption to the surrounding > environment. They may use specialized equipment and techniques to pump the > tank efficiently, reducing the amount of water required for the process. > > 3. Proper Waste Disposal: Environmentally conscious septic tank pumping > companies ensure proper waste disposal. They may partner with treatment > facilities that use advanced methods to process and treat the waste in an > environmentally friendly manner. Some companies even recycle the waste > solids into fertilizer or other usable products. > > 4. Septic System Inspections: In addition to pumping, eco-friendly > pumping companies may offer septic system inspections to identify any > issues or inefficiencies. By detecting problems early on, they can help > homeowners address them promptly, reducing the environmental impact and > potential damage to the septic system. > > When choosing a septic tank pumping service, consider researching and > reaching out to local providers to inquire about their eco-friendly > practices. Ask about their waste disposal methods, fuel choices, and any > other environmentally friendly initiatives they undertake. Additionally, > look for certifications or affiliations with environmental organizations > that demonstrate their commitment to sustainable practices. > > By selecting an eco-friendly septic tank pumping service, you can > contribute to minimizing the environmental impact associated with septic > system maintenance and ensure responsible waste management. > > Q4 Why is the Black Sea a sea and not a lake? > > A4 Rebecca Williams,MS in Accounting and Finance, New York > University Fri > > The Black Sea is a sea and not a lake because it is connected to the > Atlantic Ocean through a series of straits and seas. > > A sea is generally defined as a large body of salt water that is partly or > fully enclosed by land but also has an outlet to the ocean. > > ***A lake, on the other hand, is a body of freshwater that is completely > surrounded by land, with no direct access to the ocean. > > The Black Sea is connected to the Atlantic Ocean by the Bosporus, the Sea > of Marmara, the Dardanelles, the Aegean Sea, and the Mediterranean Sea. > These waterways form a continuous passage that allows water exchange and > marine life migration between the Black Sea and the ocean. The Black Sea > also receives freshwater input from several major rivers, such as the > Danube, the Dnieper, and the Don. > > *The Black Sea is sometimes called a mediterranean sea, which means a sea > that is almost or entirely surrounded by land*. But, this term does not > imply that the sea is isolated from the ocean, as some Mediterranean seas > have significant connections to the ocean, such as the Mediterranean Sea > itself. The Black Sea is also sometimes called an inland sea, which means > a sea that is located far from the ocean and has limited water exchange > with it. But, this term does not imply that the sea is entirely cut off > from the ocean, as some inland seas have narrow outlets to the ocean, such > as the Baltic Sea and the Red Sea. > > *My note- ***In India there are most lakes** connected to sea*. They > have light salt water eg-Vembanattu kayal of Kerala. > > Fresh water lake is like Sasthamkotta kayal in Kerala and few such lakes. > > Q5 How come the wings of a plane can take such heavy loads and > lift the entire plane up? How are pilots so sure that wings will hold a > heavy plane up in the sky and won't snap off? > > A5 Eric Larsen, Commercial pilot certificate with instrument, > multi ratings3h > > The first cut at the answer is that most planes have flown for many years, > through a variety of conditions. If there was going to be structural > failure, it would have happened already. > > Aircraft wings are designed by engineers. Modern structures benefit from > finite element analysis. There is testing. They test the wing until it fails. > And that is usually very dramatic, because it requires the wing to be > stressed very far beyond any normal situation. > > An aircraft wing is going to be built based upon knowledge of how similar > sized wings have performed in the past. They don’t build wings using > radically new designs. > > *When you have a new aircraft design, it gets a lot of inspection and > scrutiny during the early initial operating experience*. If they start > seeing cracks or deformation, it gets a lot of attention. It gets > redesigned, retrofitted, fixed. > > This process does not always work perfectly. But pilots know that they are > part of a team of people who care a lot. > > Q6 What is it like to fly on an Emirates Airline’s double decker > A380 superjumbo jet? > > A6 Peter Kubler,BVSc. in Veterinary Medicine, University of > Sydney (Graduated 1971)3h > > When the 380 first went into service I had to fly with Singapore from Sin > to Sydney and *while the plane taxing around I dozed off for 30min*. When > I woke up, I was not aware of the plane actually flying and I had to ask my > fellow passengers if we had taken off. Their reply was that we had been > flying for about 20 min. > > The acoustic level was so low that I could hardly believe we were already > in the air. The 380 is the best and most comfortable plane I have ever > flown in. I am happy to see that some are back in service now. The Airbus > 380 may not be the choice of airline companies due to costs but it has to > be the number one choice for their passengers. > > Q7 Does the rusting of iron take place in dry air? > > A7 Erika Fernandez, Knows about Chemistry Sat > > No iron does not rust in dry air. Rusting is a chemical reaction that > happens when iron meets oxygen and water. Rust is actually a type of iron > oxide, which is a reddish-brown substance that makes iron look old and > weak. Rusting can damage iron and steel objects, so people try to prevent > it by coating them with paint, oil, or other metals that don’t rust easily. > > But why does water matter? Why can’t iron rust in dry air? *Well, water > is not just a liquid, it’s also an electrolyte. That means it can carry > electric charges and help electrons move from one atom to another. In > rusting, water helps oxygen take electrons from iron*, which makes iron > lose its metallic properties and become rust. Without water, there is no > electric flow and no rusting. > > So, if the air is completely dry, meaning there is no water vapor or > moisture in it, then iron won’t rust. But that’s very rare in nature. Most > air has some water in it, especially if it’s humid or rainy. > > And even if the air is very dry, there might be other things that can make > iron corrode, such as dust, smoke, or acid. So, it’s better to keep iron > away from both water and air if you want to avoid rusting. > > *All the above QA are from Quora website on 30-07- 2023.* > > *Quora answers need not be 100% correct answers .* > > *Compiled **and posted by R. Gopala krishnan, on 30-07-2023* > > > > -- > You received this message because you are subscribed to the Google Groups > "iyer123" 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/iyer123/254091166.4852720.1690705053208%40mail.yahoo.com > <https://groups.google.com/d/msgid/iyer123/254091166.4852720.1690705053208%40mail.yahoo.com?utm_medium=email&utm_source=footer> > . > -- 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/CAL5XZor84oZpNpua%3D46pifL9Ve-QhvmPzi0CAeRQTMCOnggozA%40mail.gmail.com.
