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The HZ-1 Aerocycle, also known as the YHO-2, was an American one-man "personal helicopter" developed in the mid-1950s. Intended to be operated by inexperienced pilots with a minimum of 20 minutes of instruction, the HZ-1 was expected to become a standard reconnaissance machine with the United States Army. It was not successful due to safety issues (if you fall, that's all) and being too hard to control.
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X-15 attached to U.S. Air Force B-52 for takeoff.
Image source: NASA
How come the SR-71 was retired and there isn't a replacement for it, but the U2 is still in use with the Air Force?
It was just too darn expensive to fly. When it was retired, the Soviet Union was largely crumbling and posed little threat to high-altitude recon, so no foe really warranted the incredibly high performance. To fly the SR-71 to the Middle East from England would need multiple support aircraft, which means a very high budget. The U-2 does recon far more economically.
A pity too. The SR-71 is an absolutely baller aircraft.
Thanks for the question, Dark.
SomethingLikeALawyer, Hand of the King
The article "North American XB-70 Valkyrie — America’s Cold War Supersonic Speed Bomber" by Friedrich Seiltgen, published on The Armory Life, discusses the history and development of the North American Aviation XB-70 Valkyrie, a planned supersonic strategic bomber for the United States Air Force. Intended to replace the Boeing B-52 Stratofortress and the Convair B-58 Hustler, the Valkyrie was designed during the Cold War to fly faster and higher, evading interceptor aircraft. The program, initiated in the mid-1950s, was ultimately canceled in 1961 due to advancements in Soviet surface-to-air missile technology and the rise of cost-effective Intercontinental Ballistic Missiles (ICBMs). The article highlights the Valkyrie's ambitious design goals, including a proposed cruising speed of Mach 3 and an operational altitude of 70,000-75,000 feet. Despite the cancellation, two prototypes were built, contributing valuable data on supersonic flight, aerodynamics, and airplane propulsion. The Valkyrie program also faced a tragic incident in 1966 involving a collision with an F-104 Starfighter during a photo shoot, leading to the destruction of one prototype. The surviving XB-70 is now displayed at the National Museum of the United States Air Force.
Pick a field of study but they're only related to my dream jobs
Law
Mortuary science
Aeronautical engineering
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Flugtag competition at ESMA
It is a tradition in my school to hold a glider competition inspired by the redbull flugtag competition, based on the knowledge acquired about aircraft design and aerodynamics, for which each group made a model airplane with a free theme.
My group designed a shark theme, so our plane would be just like a shark, we designed the plans for a glider and gave it details so that it resembles a shark, in terms of technical level we saw the weight, balance, dimensions, materials that are light as balsa wood and to decorate monocoque paper.
The day of the competition we had to present a dance according to the theme, so we did a synchronized swimming dance and then we launched our plane from the top of a bleacher. In the end, our group managed to win the competition since it flew more than 50 meters, surpassing the rest of the planes.
It was very interesting for me to see how an aircraft works and how it is capable of sustaining itself in the air, it was also fun to build it and give it a little more emotion with the dance.
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November 15th, 2021
Last week was week 1 of term 2 and there was already quite a bit of homework problems. Last Friday there was an instruction lecture for mathematics and it actually cleared up quite a bit of the confusion I had from the original lecture. Unfortunately I still wasn't able to do all of the homework problems, because not all of the theory that was planned to be explained has actually been explained.
Day was also the 1st deadline of term 2 and it was for a project plan for the landing gear design project. I have quite a good feeling about the project plan, so I'm hoping to get good feedback back soon!
