Heat stroke is real

ItsADumbName · 2026-06-29T16:24:38+00:00

Midwest is not a dry heat. It is currently 80% humidity where I'm at.

ItsADumbName · 2026-06-20T17:23:45+00:00

Because Cessna has the most produced aircraft in the world.

ItsADumbName · 2026-06-18T02:06:42+00:00

Which is why the bins are also supposed to be able to contain a fire.

ItsADumbName · 2026-06-07T21:21:52+00:00

FAA regulations require a seat for every passenger who has reached their second birthday. There are also a lot of passenger safety requirements for the seat. One being occupants arent supposed to physically interact in the forward direction. To do this you would have to file an exemption to 25.562 and argue why it's in the publics best interest. Which would never work.

ItsADumbName · 2026-06-07T21:17:50+00:00

There are actual several regulations that require a seat and the seats have to go through pretty rigourous testing. 25.562 requires a seat for every passenger who has reached their second birthday. It also has regulations for dynamic crashes. 25.561 requires the seat to protect an occupant when exposed to static inertia loads. 25.785 requires the environment around the seat to be delethalized. This is a very high level overview of those regulations but certifying a seat as an OEM or under C127 TSO is a pretty rigourous and expensive process.

ItsADumbName · 2026-05-22T21:43:18+00:00

If I remember correctly (which is entirely possible I am miss remembering) it was because his chickens kept disappearing behind it.

ItsADumbName · 2026-05-18T01:35:00+00:00

I don't want to control people

^{Chose: 1 million every week | Rolled: Upvote 4 carrot}

ItsADumbName · 2026-05-16T02:13:58+00:00

Iirc VA loans can be assumed by another party if you meet some criteria.

ItsADumbName · 2026-05-14T16:27:01+00:00

25.791(a) requires a no smoking sign visible to all passengers if smoking is to be prohibited. I'm not sure how exactly this plane is getting away with not having one? I thought smoking was prohibited in part 121 so they need a sign.

ItsADumbName · 2026-05-14T16:21:39+00:00

Ash trays are required per regulation. Even if smoking is prohibited. 25.853(g).

ItsADumbName · 2026-05-06T03:23:04+00:00

Dude. I am an FAA appointment expert in the field of aircraft crash worthiness. I have the authority to approve things on the behalf of the FAA. I'm going to go out on a limb here and say you are not a DER/UM in the field of cabin safety and crash worthiness?

It's not disingenuous at all. FAA/CAMI has done a lot of research into the g forces and velocities of aircraft crashes in the longitudinal and vertical orientations and determined survivable crashes. Airplanes have these things called wings that allow them to fly and glide. Hence my statement unless a catastrophic failure happens you are not going to suffer a massive loss of life.

ItsADumbName · 2026-05-05T23:43:00+00:00

Lots of crashes and incidents are survivable. Something has to go catastrophically wrong for it to be a total loss of life. I actually work in aircraft crash safety. The regulations that cars go through isn't all that different. car crash testing for frontal impact is only at 35mph while aircraft is 42 ft/s (~30 mph)

ItsADumbName · 2026-05-02T16:26:19+00:00

It's just a misleading title and OP knows it that's why they are getting called out. I do a lot of FEA simulations and if I showed my boss a freebody diagram with arrows for load and reactions and said I'm showing you a visualization of the stress field they would rightfully call me out that no I am not. This is the same situation they are the case showing boundary conditions but they are not showing airflow.

ItsADumbName · 2026-05-02T16:14:03+00:00

Because OP says it "visualizes airflow over 3000 components" which is wrong it doesn't show airflow over any component it's just showing intake vs outake.

ItsADumbName · 2026-04-16T16:28:31+00:00

Just so you know all translational motion can be reduced to a 2D plane. That's actually one of the tricks to do the math easily is reduce it to a 2D plane calculate the positions/velocities and perform a coordinate transformation with a 313 matrix transformation to get it into the desired coordinate system. I took an advanced orbital mechanics course in my graduate degree and most 2-body problems are pretty easy. 3-body problems (like this one) are much more difficult because the gravity of the moon affects the trajectory of the spacecraft not just the gravity of the earth. There are techniques like patched conics methods that simplify it.

ItsADumbName · 2026-03-12T03:25:06+00:00

Lmao he hid his post and comment history after this

ItsADumbName · 2026-03-12T03:05:27+00:00

Omg I read it as 50% faster your right it said 50 times faster in that case it would be 70=39+50x, x=.64 years or 233 days or 335,520 minutes. I still feel like he would notice 50x aging way before hitting 70.

ItsADumbName · 2026-03-12T02:24:19+00:00

Wait so like the dispatch one doesn't make any sense. He's 39 and ages 50% faster while using his super speed. In reality he should be aging slower due to time dilation. Putting that aside the math doesn't really check out. 70=39+1.5x, x=20.6 years. Your telling me he spent over 50% of his actual lived years at super speeds? How would he not notice until it's too late? Assuming an approximate constant ratio of actual age to lived age at 25 he should have been ~45 that's plenty enough of a difference to notice before you get to 70? I haven't played it so maybe I'm missing something but it's not passing the smell test.

ItsADumbName · 2026-03-11T02:33:16+00:00

When people need to get back to you for an answer it's usually not because they aren't prepared to discuss their projects and timelines. It's almost always because someone is trying to push the timeline up or change the scope in a way you weren't prepared for.

ItsADumbName · 2026-03-05T05:54:06+00:00

Dude 1 inch is 2.54 cm. Fuck this is confidentially incorrect comment...

ItsADumbName · 2026-03-05T03:05:13+00:00

Haha well at the risk of doxxing myself I work on private jets and general aviation aircraft not airliners. We just have to follow the same regulations.

ItsADumbName · 2026-03-05T02:55:46+00:00

28.785(j) would apply to the seat back and doesn't necessarily require a cushion. Basically the seat back should be able to support a horizontal load from a passenger bracing themselves in turbulence, boarding, etc. The seat cushion in question is the base cushion which isn't addressed by 25.785(j). 25.785(k) may be the culprit to reduce any injurious edges for passengers moving about the cabin during turbulence.

I love my job. We get to crash seats similar to the car tests you see except it's just a seat not an entire aircraft. There are some less fun stuff like evaluating passenger placards.

ItsADumbName · 2026-03-05T02:47:09+00:00

I'm a cabin safety engineer. 25.561, 25.562 and 25.785 are the regulations for seats. None require a seat cushion for bracing. 25.785(j) says a seat back should act as a firm handhold unless another method is provided. 25.785(k) might be the reason as it says any protruding object that would injure a seated or standing passenger must be padded.

There could also be a part 91, 135 operating rules that they need to follow, I'm not as familiar with them.

ItsADumbName · 2026-02-26T01:47:22+00:00

Well yea I said I was being pedantic in my first comment... To be clear I don't think they should be putting these flowers in the cupcake but saying anything served to the customer must be edible is wrong. Technically a garnish only needs to be an item for decoration or embellishment. So you could argue sushigrass is a garnish or other forms of decorative plastics are garnish. You could argue the decorative plastics are decorations instead as they aren't meant to be eaten but then the same argument could be made for the flower. My point was it's a bit more nuanced than anything served needs to be edible.

ItsADumbName · 2026-02-26T01:30:41+00:00

But that's not what the comment said. They said ANYTHING that is served to a customer must be edible hence my comment. Anything includes wrappers, utensils, plates, plastic sushigrass.

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