Nafeels
Nafeels t1_j0w4fwl wrote
Reply to comment by RedditorManIsHere in TIL that due to anti-Chinese sentiment in San Francisco in the late 19th century, Levi's jeans briefly held the slogan "The only kind made by white labor" on its logo. by lemming-leader12
Considering spontaneous combustion of jeans were a thing back in early 20th century I get why asbestos liners were used.
Nafeels t1_ivuzss3 wrote
Reply to TIL In 1983, Air Force One (with Reagan aboard) landed six minutes before a microburst slammed into the ground at Andrews Air Force Base, causing wind speeds to hit 149 mph. At the time, that was the fastest wind speed ever measured by an anemometer. by theotherbogart
Microbursts were pretty much an obscure phenomenon at that time, only known by certain scientists and meteorological experts. Only after a microburst took down a Delta L-1011 a couple of years later that microbursts were studied rigorously. Today all modern planes have a system that could predict an incoming microburst.
Nafeels t1_irpmvdx wrote
Reply to TIL that passenger jet engines produce most of their thrust from fan at the front, not from the jet exhaust, and that this is called a high-bypass engine. by Rilot
The development for the turbofans throughout history were turbulent for the most part (no pun intended).
For example, the Rolls-Royce RB211 program nearly killed the company trying to achieve the necessary efficiency goals required by the Lockheed TriStar program. They had to bring in a lot of veteran engineers from WWII to figure out the fan blade designs.
Nafeels t1_jb8u27y wrote
Reply to comment by Barachan_Isles in TIL that the Convair Model 118, a tentative flying car from 1947, was shelved because its prototype crashed when a test pilot mixed up the flight engine's fuel gauge with the road engine's and didn't see the former run out. While he survived, this killed interest in the project. by ShabtaiBenOron
Same! I grew up watching shows like Air Crash Investigation/Mayday and I still study general aviation accidents today as a hobby as well. /u/admiral_cloudberg writes fantastic reports of it and if there’s one thing in common with these accidents it’s human error. Even simple mistakes such as forgetting to extend flaps, weight balance calculations and blocked sensors would often lead to fatal mistakes; which is why pilots are often trained to stay sharp and follow a set of procedures before resorting to their own judgment.
While I love the idea of flying cars as a little avgeek, as an engineer now I’m just hesitant to embrace the idea let alone thinking of ways to implement it with barely any nuisance to the end user.