THERE ISA LIMIT FOR BLUFFING. 1917 THOSE WERE NOT AT ALL BORN. LIAR. The *de Havilland DH.82 Tiger Moth* is a 1930s British biplane <https://en.wikipedia.org/wiki/Biplane> designed by Geoffrey de Havilland <https://en.wikipedia.org/wiki/Geoffrey_de_Havilland> and built by the de Havilland Aircraft Company <https://en.wikipedia.org/wiki/De_Havilland>. It was operated by the Royal Air Force <https://en.wikipedia.org/wiki/Royal_Air_Force> (RAF) and other operators as a primary trainer <https://en.wikipedia.org/wiki/Trainer_(aircraft)> aircraft. In addition to the type's principal use for *ab initio* training, the Second World War <https://en.wikipedia.org/wiki/World_War_II> had RAF Tiger Moths operating in other capacities, including maritime surveillance <https://en.wikipedia.org/wiki/Maritime_patrol_aircraft> and defensive anti-invasion preparations; some aircraft were even outfitted to function as armed light bombers <https://en.wikipedia.org/wiki/Light_bomber>.
The Tiger Moth remained in service with the RAF until it was replaced by the de Havilland Chipmunk <https://en.wikipedia.org/wiki/De_Havilland_Canada_DHC-1_Chipmunk> during the early 1950s. Many of the military surplus aircraft subsequently entered into civilian operation. Many nations have used the Tiger Moth in both military and civilian applications, and it remains in widespread use as a recreational aircraft. It is still occasionally used as a primary training aircraft, particularly for those pilots wanting to gain experience before moving on to other tailwheel aircraft. Many Tiger Moths are now employed by companies offering trial lesson experiences. The de Havilland Moth club, founded in 1975, is now an owners' association offering a mutual club and technical support. KR IRS 19 6 23 On Sun, 18 Jun 2023 at 03:58, sivaraman <[email protected]> wrote: > I have not flown a tiger moth but got my licence in a Pushpak made of wood > and had of course landing wheels. > I wonder how you were able to fly to various destinations in those days > without ATC assistance. > When I was DGCA under my guidance my engineers built a two seater trainer > aircraft SWATHY at the backyard of my SAFDARJUNG office. > This was first flown from the ground by me and Captain Biala our training > in charge. > It became a nose wheel aircraft and was manufactured by the BHEL in their > Haridwar factory where a new unit was created for the building of this > aircraft after it was test flown and certified by IAF /HAL test pilot Air > Vice Marshal Lamba and the NAL. > One aircraft crashed when BHEL test pilot a Sirdar from Patiala Flying > Club did multiple loops on a new aircraft fresh from the factory.He was > killed. > Around 25 aircraft were made and GOI gave them to various flying clubs. > But after I left the subordinates who ran the DGCA killed this project > obviously because of the pressure from the flying clubs which wanted only > CESSNA152 aircraft and also the commission that went with its purchase. > The then BHEL Chairman Mr. Bhatnagar tried to save the project but could > not and he closed the unit. > Incidentally a similar project of the NAL was also killed by the DGCA and > the flying clubs.Their aircraft was an all composite aircraft and was stall > proof. > They are now testing their 4 seater modern aircraft. > Best wishes > > > > > Sent from my iPad > > On 18-Jun-2023, at 12:00 PM, 'gopala krishnan' via KeralaIyersbviously < > [email protected]> wrote: > > > Sir, > > Your description of the plane reminds me of a 2 seat plane cence of wood > and using a car engine and take off from sea beach in the Malayalam film > *Vimanam*.The film was released during 2017. > > I was thinking how the plane was made after repeated failures. A few > people pushed the plane and after a time it went high. > > Thank you very much for the addition. > Gopalakrishnan > > On Sunday, 18 June, 2023 at 09:41:31 am IST, Narayanaswamy Iyer < > [email protected]> wrote: > > > Dear folks > > Sri Gopalakrishnan asks:- > > *"Q4 - What was flying like 60 years ago?"* > > Sixty-five years ago I was flying a two-seater single-engined Tiger Moth > biplane with wooden propellers and rear-dragger spring-loaded > traction-blade instead of a rear wheel. > > It was 29 feet 4 inches wingspan, and 23 feet 1 inch long. It had a 120 > horsepower engine. Could travel 300 miles at a speed of 90 miles per hour. > > It was not more expensive than a ten-horsepower family car. > > One of my professional engineer friends found a crated unassembled plane > in Bangkok Airport after the war, had it transported to Singapore, and > assembled it with his engineer friends. He saved money, but it was not > insured. > > Instead of petrol. it flew on kerosene, which was plentiful at the > airports and the airstrips where we landed. Also much cheaper. Instead of > exhausting winding country roads, heavy and unpredictable traffic, we flew > straight to our destinations over enchanting views of land and sea, rural > settlements, overcrowded towns, neat plantations, grassy farmlands, > thrilling coasts, winding rivers. > > The cockpit was open, so you had to wear windproof jacket, helmet, > mask and goggles. It had no electrical system, so had to be started by > someone pushing round the heavy wooden propeller judiciously. to avoid > accidents, while the pilot started the engine. The wings were made of > fabric, to keep the aircraft weight light. > > You had radio contact with base and with our destination at all times, as > well as with nearby landing places, to divert to in case of emergency. > > One of our main concerns was the weather, especially the wind. > > The plane was excellently designed and extremely manoeuvrable. If the > pilot lost consciousness or lost control of the plane, and there was no > co-pilot or trained passenger to take over, the plane would correct itself, > and land safely if the ground below was grassy and without obstructions. > > S Narayanaswamy Iyer > > > > On Sat, Jun 17, 2023 at 10:28 PM 'gopala krishnan' via iyer123 < > [email protected]> wrote: > > *CULTURAL QA 06-2023-17A* > > Q1 What is the effect of decreasing the resistance of a wire in > an electrical circuit? > > A1 Gopala Krishnan, Former Assistant General Manager 1996-2004 > at Department of Telecom (1966–2004)Just now > > Recollect Ohm’s law. V= I x R. When resistance is reduced current flow > will increase, voltage applied being the same. When current is increased > the wire become hot, if insulation is less, there are chances of fire risk. > This is a hypothetical answer. > > In practice decreasing the resistance of a wire in the electrical circuit > is not possible unless the wire is removed and a new one is provided . One > can only reduce any resistance connected in the circuit using a wire. > > This appears as a question asked just for asking for a question. > > *My note- Hundreds of similar questions appears in* Quora, I select > informative and interesting and simple to understand ones for my Cultural > QA. > > Q2 What's the lifespan of a Boeing 747? > > A2 Vishnu Ravi, Aviation Enthusiast | Content Creator 31m > > Unlock the full potential of a Boeing 747 with the power of meticulous > care and maintenance. *The lifespan of this remarkable aircraft is > influenced by various factors, including its make, model, and the level of > attention it receives*. > > Imagine a world where your Boeing 747 soars high for up to 30 years, > surpassing the average retirement age of passenger jets. That's right, by > choosing a trusted manufacturer, your aircraft can be built to endure and > thrive for even longer. > > But it doesn't end there. Special inspection and maintenance programs hold > the key to extending the lifespan of your aircraft. By implementing these > carefully designed programs, you can stretch its operability to > approximately 30 years, before even reaching the cycle limit. It's a > testament to the unwavering dedication to safety and excellence. > > When it comes to the number of take off and landing cycles, the > manufacturer's expertise is paramount. Boeing, for instance, sets an > anticipated limit of 35,000 cycles for the iconic 747. The hours spent in > flight contribute significantly to the aging process of the fuselage, > wings, and engines, often leading to fatigue. > > However, with proper care, your Boeing 747 can conquer this challenge and > continue to perform at its peak. > > Whether you embark on long-haul journeys with fewer cycles or opt for > short-haul flights with higher demands, your aircraft is designed to > withstand the test of time. > > Long-haul aircraft boast a remarkable design lifespan of approximately 40,000 > cycles, while short-haul counterparts can endure up to an impressive 111,000 > cycles. Just imagine the possibilities. > > While a Boeing 747 typically spans around 25 years, with the right > approach, this exceptional aircraft can exceed expectations. Don't let the > *world's > first Boeing 747-8 BBJ, retired after only ***30 flight hours and 10 years > of service, deter you*. By embracing proper maintenance and inspection > programs, your Boeing 747 can evolve into a timeless symbol of endurance > and reliability. > > *** NOT CLEAR TO ME > > In conclusion, the lifespan of a Boeing 747 is influenced by various > factors, yet with proper maintenance and inspection programs, it has the > potential to reach an impressive 30 years or more. Embrace the power of > longevity and take flight into a future filled with unrivaled possibilities. > > Q3 My PNR status is CNF/S9/56. Will my seat shuffle after the > chart is prepared? > > A3 Ankit Naphade, Lives in Mumbai, Maharashtra, India Jun 7 > > No. It will not shuffle unless you select automatic upgrade option if > available. Even if you select that, there is only 1% chance of upgradation. > This happens when an upper class seat in that train is going vacant. It's > rare. > > The passengers who got M coaches instead of B were different case. > Recently railways announced 3AC economy which is termed as 'M' coach. So > they announced, canceled and again re-announced. So that's why some people > got 'M’ coaches when they booked 3AC with a refund also because economy > fair is little bit lower than 3AC. > > Concluding, you seat never changes after confirmation and it merely > changes for like 1% — 2% chances in case you have selected class upgrade > option. > > Q4 What was flying like 60 years ago? > > A4 John Scallan, Former Radar Tech at U.S. Air Force > (1974–1978)Tue > > *On commercial aircraft the seats were wide*, the booze was cheap, the > snacks were tasty, the flight attendants were all beautiful and friendly > females called stewardesses, smoking was allowed everywhere, the > customers were well dresses and well behaved, the cockpit was open, and you > could chat with the pilots if you wanted. > > Q5 What are some mind blowing facts that most people don't know? > > A5 Fact sky, Answered by Krishna Kamat,5h > > The total population of Dubai is 3.4 million.More than 85 Percent of > Dubai’s Population Is Foreign. > > Home to the World’s Tallest Building (Burj khalifa). > > The Dubai Miracle Garden Is the Largest Flower Garden in the World. > > The Dubai Mall is the world's largest shopping mall. > > The Dubai Aquarium Tank, with a capacity of 10 million litres, is the > largest suspended aquarium in the world. > > *The Burj Al Arab Hotel Uses Enough Gold to Cover the Mona Lisa Painting > 46,265 Times.* > > Kissing or holding hands in public is illegal and can result in fines or > deportation. > > Dubai Government has provided air-conditioned shelters for those waiting > for public transport. > > *There are ATMs in Dubai that dispense gold bars.* > > There is no income tax on income generated in Dubai, And no sales tax on > most goods and services. > > Q6 How flexible are airplane wings? > > A6 Vishnu Ravi, Aviation Enthusiast | Content Creator Jun 8 > > *Airplane wings possess a remarkable degree of flexibility, enabling them > to bend without fracturing.* These wings can withstand flexion exceeding > 5 meters (17 feet). > > The Boeing 787 Dreamliner, in particular, exhibits an exceptional level of > flexibility in its wings. *This attribute allows for the absorption of > load changes and wind gusts*, resulting in a smoother and less turbulent > journey for passengers. During rigorous testing, the wings of the Boeing > 787 demonstrated a remarkable upward flexion of 26 feet before reaching > their breaking point. > > Aircraft designers carefully calculate the maximum stress that a wing may > encounter during flight and subsequently reinforce it to withstand an > additional 50% as a safety margin. The purpose of designing wings with > flexibility is to function akin to springs, reducing the perception of > turbulence among passengers. By flexing, the wings absorb a significant > portion of the turbulence that would otherwise be felt by passengers. > > While flexible wings enhance the comfort of passengers by mitigating > turbulence, they also pose challenges to maneuverability due to the > unpredictability of wing behavior. Anticipating the precise response of a > flexible wing becomes more complex. > > Static testing plays a vital role in the wing design process. Unlike > fatigue tests that subject wings to operational conditions, static testing > focuses solely on determining the point at which a wing will bend to its > breaking point. In one such test, an aircraft wing surpassed its designated > stress threshold by 154% before finally fracturing, reminiscent of a branch > snapping. > > In the field of aeronautics, a flexible wing refers to an airfoil or > aircraft wing capable of deforming during flight. Early aviation > pioneers, such as those behind the Wright flyer, harnessed the flexible > properties of lightweight constructions to manipulate flight through wing > warping. > > Q7 My car started blowing white smoke from the exhaust, but > it’s not overheating, and my mechanic told me it is from putting too much > oil in the engine. What part am I supposed to replace? > > A7 Erika Fernandez, Car Lover Jun 11 > > *Too much oil in the engine can cause oil to leak into the combustion > chamber, where it mixes with the air and fuel and burns along with them. > This can produce white smoke from the exhaust*, as well as other > symptoms, such as reduced engine performance, increased oil consumption, > spark plug fouling, or oil pressure warning light. > > To fix this problem, you need to drain the excess oil from the engine and > refill it with the correct amount and type of oil according to your owner’s > manual. You also need to check and replace any parts that may have been > damaged or worn out by the excess oil, such as the valve seals, piston > rings, or PCV valve. > > Before you do that, you should first drain the excess oil from the engine > and refill it with the correct amount and type of oil. You should also > consult your mechanic and have him diagnose your car properly to confirm > the cause of the white smoke. > > I hope this answer helps you to understand what part you are supposed to > replace if your car is blowing white smoke from putting too much oil in the > engine. > > Q7 How long does it take to fix a fallen electricity pole? > > A7 Gopala Krishnan, Former Assistant General Manager 1996-2004 > at Department of Telecom (1966–2004) Just now > > The question is time consumed to fix a fallen electricity pole. *From the > question it is understood the post is not damaged. The post can be of metal > or R C C.* > > Whatever is the type of pole, first the EB supply has to be disconnected > either in transformer(if low voltage) or in substation if HT line. Customer > feeds are disconnected in most cases. > > The poles are raised after attending to break of electric wires if any. > Nowadays the poles are raised mostly mechanically using bulldozer and > partially by skilled field staff. *Totally mechanical LIFTING is not > possible in Indian conditions*. > > 3–5 skilled WORKING STAFF, and linemen and field officer must be there. > Field officer is to attended more technical works. > > The pit has to be set right, and pole has to be inserted to pit slowly and > raised slowly. Proper traffic warning has to be arranged. > > The sag of electric wires have to be straightened after climbing on the > post by staff . The going out cables/ wires to customers has to be > reconnected by linemen. Supply has to be switched ON after all testing. > Staff has to wear all safety items and necessary tools for field work. > > In Indian conditions roughly the operation takes 3–5 fours. > > *All the above QA are from Quora website on 17-06- 2023.* > > *Quora answers need not be 100% correct answers .* > > *Compiled **and posted by R. 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