Another video out soon! We'd love your feedback!
Added 2024-08-28 10:30:06 +0000 UTCA new video is just around the corner: We're diving into airplane misconceptions! A few sections and animations are still in progress, but all feedback is welcome and greatly appreciated!
We hope you enjoy it, and thank you all so much!
Gregor, on behalf of the Ve team.
Comments
I think this "it's easier to compress cold air than hot air" is too simplistic as an explanation of higher engine efficiency. Especially for your channel, even though it's tangential to the main point. Yes, colder air is denser and so there is simply "more of it" and less work to do (or alternatively, we can burn more of it for higher output). But that's "other things being equal", and as we go higher, things are very much not equal: density falls quicker than the temperature compensating it. The point is still valid: in simple terms, compressor is more efficient with colder air (in the order of 0.1% per K - which actually makes a decent 5-7% overall). But this is on the background of other things. For example (and I think this is the easiest point for your audience), this is a heat engine after all, in which the maximum temperature is limited for structural reasons. With colder sink, the engine still regulates to the same hot temperature, and the overall Carnot efficiency increases.
Zeus
2024-08-29 11:24:04 +0000 UTCThis. I heard many complaints from the pilots back then of that characteristic noise in the headphones. With a hundred phones nearby it would probably be happening all the time. Not a "threat" but a substantial inconvenience nevertheless. I also read a report where a navigation error in a GA airplane was attributed to a phone interference, but I'd need to find it in order to include it in a serous discussion. It's always complicated, starting from the fact that most GA aircraft back then were not certified to use GPS alone as a method of navigation.
Zeus
2024-08-29 10:36:42 +0000 UTCGreat video! I'm also a member of the tomato juice club and had no idea why. It was slightly unclear to me if you're saying that the stimulation causes a craving or enhances the enjoyment. It sounds like you're saying that it's actually perceived to be more enjoyable to consume (or both)?
Aaron Koblin
2024-08-28 19:16:15 +0000 UTC0_o That's a lot of videos back to back... Please don't burn yourselves out!
Origami Alice Zhang
2024-08-28 18:54:54 +0000 UTCI personally think this is perfect. Ending with what the NTSB does is a good idea.
Patrick Timmons
2024-08-28 17:48:03 +0000 UTCA comment from my time in the US Army, the field rations, called "MRE" for Meal, Ready to Eat", used to have on some menus a small package of baked beans. These menus were also labeled "Not for pre-flight or in-flight use". I think you hit on that during this video.
Charles S. Cook
2024-08-28 17:43:49 +0000 UTCExcellent overall! You made a good choice in collaborating with Petter, a true expert. The change I suggest is about the Aloha Airlines discussion. Rather than scaring people by starting with the animation of the plane coming apart, you should preface that by a discussion of the fact that the Aloha Airlines plane was subject to corrosion (due to operating in a salt water environment) and was subjected to far too many pressurization cycles. THEN explain why it came apart - and THEN follow up with how this failure was addressed by multiple technical orders (Airworthiness Directives) that mandate better inspection and maintenance of pressurized aircraft - and strict requirements for repair of corrosion.
Malcolm Dickinson
2024-08-28 14:30:17 +0000 UTCI love tomato juice, on the ground and in the air!
Jeff Stoner
2024-08-28 13:37:59 +0000 UTCGreat video! Height units are being mixed between ft in some parts and m in others. Hard to compare the cruising altitude to the height of Everest.
Stephen Woo
2024-08-28 12:41:49 +0000 UTCEarly 2G GSM mobile phones did cause significant interference to unshielded/twisted cables and electronics. Search "GSM RF Noise" if you can't remember or are too young to have experienced it. Combined with the higher power levels of mobile in the 1990s and less consideration of where cables were run, I believe the suggestion that mobile phones were never an inconvenience or threat to the crew or safety is wrong. Agree that little of this applies now.
Steven Clarke
2024-08-28 12:01:28 +0000 UTC
