字幕列表 影片播放 列印英文字幕 More than one century ago we manage to fulfill our dream of achieving our first flight in a manned heavier than air aircraft, an amazing machine capable of transporting one or even two men onboard over the air at about 34 mph, speed that would double in less than a year. But what benefits would this technology bring to humankind? At the time nobody was still sure during the first years, but with record after record being broken by new airplanes regarding speed, altitude and flight duration, this beautiful machine started to exhibit a potential for practical tasks, and also getting attention from the military, who soon will be making an extensive use of the newly invented machine called the airplane. We'll also see how this flying machine evolved in several stages into what we know today as fighter jets, the most technologically advanced flying machines, get ready for an amazing story about aviation. Welcome to Joyplanes. *The great War* The year is 1914 and the world is in conflict, the first world war started only 11 years after the first flight made by the wright brothers, some improvements have been made to the flying machines, and in the military found them useful for recognizance missions which until then were made by men with horses, very slow, less range and more limitations than using an aircraft, despite some opposition of traditionalist on the military the airplane was getting its way in for it's clear advantages against the enemy, that's how it started, military airplanes were used to fly over enemy lines and spy on them, taking pictures was the primary way of recognizance, but it wasn't easy, flying in the early days with no navigation instruments and really simple maps in places you're not familiar with was a real challenge. Soon after, the enemy started using the new technology as well, one of the first air-to-air battles were made with hand guns carried by the pilots, when two pilots of recognizance airplanes from opposites sides encounter each other in mid-flight, later these type of battles were given the name of dogfight. It wasn't long after experimentation was being made to accommodate machine guns on the aircraft, this raised another problem, if the machine gun was positioned right in front of the pilot it was convenient for aiming and shooting at the same direction of the flight, but it meant that the bullets would strike the propeller making it unusable, the pusher airplanes however didn't have this problem, but these airplanes are not as efficient as the tractor configuration, another way was mounting the gun on top of the wings, but it was really hard for the pilot to aim and shoot, an ingenious solution was done in the Fokker Eindecker, it was the first aircraft to be fitted with a synchronization gear, which made possible firing through the propeller without making any damage. Dropping small bombs by hand was another alternative. As the flying machines progressed so did the defense mechanisms with anti-aerial artillery. *Escaping tragedy* Being taken down by the enemy was a high probability if you were an inexperienced pilot, and the problem then was that if your machine was going down, you were going down with it as well even if you survived the first attack. A terrible way to die and an awful loss for the air force who couldn't afford losing more pilots. The use of parachutes was very controversial, although it was invented long before airplanes and it was a clear option, the only personnel allowed to use parachutes were the observers in Balloons, these balloons were used to observe the battlefield and guide artillery on the ground, they used a highly flammable gas, and they were often shot down bursting into flames and falling down the sky, the parachute was the only device that secured the lives of the occupants. For the aviators in the other hand, they had several problems, in most of the aircraft the cockpit was tiny, there was no space for extra equipment and certainly the emergency exiting maneuver was going to be very difficult in such a space, more over, the high command though that the use of a parachute will encourage the pilots to jump and escape in critical situations instead of facing the enemy. They also said that a heavy parachute would affect the fuel efficiency and performance of the aircraft. In other words they didn't care about the lives they were in charge of, The German air service, in 1918, became the world's first to introduce a standard parachute and the only one at the time. Later parachutes will become a standard in every country. *Power* Engines never stopped evolving during the war and so the construction techniques but the airplanes were always made out of wood cover by fabrics, the most common type was the biplane for its great strength and already familiar structure, engineers started to understand even more the aerodynamics, they discovered that a monoplane was a lot more efficient than the biplanes or triplanes, and some monoplanes were successfully deployed in the front lines of the war, but these kinds of airplanes needed a complex array of struts and wires to maintain the structural strength of the wings, specially in highly demanding maneuvers, this was solved with the use of new materials and construction techniques, like metal aloes and internal structures inside the wing so no struts or wires were required, but the machine is nothing if you don't have a good pilot, one of the most prominent fighter pilots of the WWI was Manfred von Richthofen, better know as the red baron, he was a German Air Force pilot during World War I. He is considered the ace-of-aces of the war, being officially credited with 80 air combat victories, most of he's victories were made using his albatross biplane, although he's mostly associated with the triplane which he did use by the end of his career but not as much as the biplane Albatros D series, we can make a video only about Manfred von Richthofen in the future. Airplanes extended the range of the war and now cities hundreds of miles away from the battle front are exposed to these deathly machines, even before the airplanes bombardments were possible with lighter than air aircraft, like the zeppelins, but these zeppelins were slower and bigger than the airplanes, making them an easy target. *EVOLUTION* Towards the end of the first world war the maximum speeds recorded for an airplane is 150 mph. By now, not much more funding is available for the development of military aviation, so during the 20s civil aviation took over the challenge of the speed and distance records. A prominent event was the Schneider Trophy, It was intended to encourage technical advances in civil aviation but became a contest for pure speed, the race was significant in advancing aeroplane design, particularly in the fields of aerodynamics and engine design, the race would feature seaplanes. The last Schneider event was held in 1931, and the winner was the British team with the Supermarine S.6B reaching speeds of 380 mph or 610 km/h. These planes are far more advance than any military aircraft at the time. The most important changes on the new fast aircraft are the engine power, cylinder disposition, and aerodynamics in general, making the planes slim to offer less resistance to the air, this presented many other problems like the engine cooling. The most common type of engine was the radial type, where all the cylinders were exposed to the direct airflow, this was at the cost of more air drag and therefore was not possible to reach faster speeds, the inline cylinder engines in the other hand could present less aerodynamic drag but air cooling was less ideal, so additional liquid cooling systems had to be developed by using radiators. In the Supermarine S.6B the engine oil was cooled by a set of pipes on both sides of the fuselage, and another radiator on the wings for the liquid engine cooling. *Faster is better* Germany didn't take part on the Schneider races, because after the great war it was agreed they wouldn't manufacture aero-engines beyond a fixed size, so they don't have high speed aircraft yet, until the Nazi regime takes part in 1933 when the old treaties are ignored, competitions on aircraft design are held to select the best fighter airplane, and the winner is a low wing monoplane designed by Willy Messerschmitt, the BF-109, the British also had a formidable counterpart introduced one year later, the Supermarine Spitfire a new generation of fighter airplanes that will change the course of the upcoming WWII war, the Hawker Hurricane was also a simple but great British fighter plane, the simplicity relies on the use of the classic wood and fabric construction, and because of this it was faster and cheaper to manufacture. The united states had the F2A Buffalo when entered the war, but it was an outdated war bird being overweight and unstable, specially when compared with its Japanese opponent the Mitsubishi A6M Zero, but the F4F Wildcat took it's place in battle and it was later replaced by the F6F Hellcat, of course later designs were created like the mustang P51 and many others. Throughout the history of military aviation one characteristic was predominantly important for air superiority, and it was the speed, a faster speed means that you can reach your target and get out of faster, that's why faster was better. *The dawn of aerospace tecnology* Germany was very advanced in aerial technology, they started experimenting with rockets, and unmanned flying bombs, they also created the Me 163 Komet, basically an airplane with a rocket for an engine, it was the only rocket-powered fighter aircraft ever to have been operational and the first piloted aircraft of any type to exceed 621 mph or 1000 km/h in level flight. The problem was it's short flight time, but a new generation of engines was going to revolutionize aviation and make possible even greater speeds. The jet engine. The Heinkel He 178 was the first turbojet powered aircraft ever to fly, but the most common operational jet-powered aircraft during the WWII was the Me 262. After the war, the development in aviation was pretty advance, but the quest for speed continued, with the introduction of the transistor now computers onboard or avionics was possible for a more coordinated and precise control over the ever-increasing complexity of the Flight systems, now these computers onboard help the pilot fly these machines. If you want to see more about the fastest airplanes in the world we've made another video on that, the link is on the screen and the description of this video. Today we don't only have really fast state-of-the-art aircraft, but we've built rockets, spacecraft of many kinds, satellites and much more, we've done this in less than 100 years when we still used to dream of flying like the birds. If you liked this video, now you can consider supporting us on Patreon, but we'll be happy if you only subscribe to the channel. I usually make videos about RC aircraft and aviation in general, but every now and then a video like this is released, so stay tuned for more and stop dreaming about flying, wake up and make it a reality.
B2 中高級 美國腔 12分(Military Aviation History in 12 min | Military aircraft evolution explained) 25 1 menghsuan228 發佈於 2022 年 08 月 21 日 更多分享 分享 收藏 回報 影片單字