I guess they’re ungrounded now?
(media.greatawakening.win)
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Looks like, many reports of Chinooks up in the air.
I've been watching the skies for months and every once in a while you will see a couple Chinooks going from one place to another. I don't think it is really anything big other than test flights and moving them from one base to another. Now when we see multiples and long trips then I will wonder
What does this mean?
https://www.popsci.com/technology/chinook-helicopters-grounded/
I find this interesting.
O-ring? Where have we heard this before? Remember the Challenger Space shuttle disaster? Coincidence? COMMS?
Maybe but O-rings are designed to fail. They lose their elasticity over time so failure is inevitable. They have to be replaced periodically (maintenance schedule) and the operating limits must not be exceeded (temperature etc.)
(Once I couldn't spell "engineer" and now I are one!)
Yes, you are correct. Along with this, aging, temperature, friction, and other factors all affect O-rings. In fact, the government writes PMS (preventive maintenance schedules) to manage this sort of thing. My point is O-ring designing is so well understood in engineering that it shouldn't be the issue to ground a fleet of helicopters. Prototype testing shouldn't permit it. The same with the Columbia space shuttle, which wasn't the maiden bird that flew. I find it to be a 'convenient' cover for some other reason to ground a fleet of birds like this.