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It's an everyday occurrence during the development of our app (Infinite Flight). We often get customers complaining about a misplaced sticker on a livery, a mi
by kpao 9y ago
It's an everyday occurrence during the development of our app (Infinite Flight).
We often get customers complaining about a misplaced sticker on a livery, a missing exit door in a particular variant of a the 737-900... That type of stuff is easily verifiable. But for things like the airplane not behaving in a way they expect in certain conditions, or perhaps a wrong approach speed or angle, discussions usually start with:
"We tuned the airplane based on information available to us at the time we built the airplane. We are happy to make any changes based on an actual report from one or more pilots flying on this airplane, or better yet, the aircraft manual if you can get your hands on one."
The discussion usually ends there :)
One we get often is about why it's possible to do a barrel roll in a jet liner in Infinite Flight. We simply point them to the video of that test pilot who did one in a 707 ;-)
- kordless 9y agoThis was done in Seattle: https://www.youtube.com/watch?v=Ra_khhzuFlE https://www.youtube.com/watch?v=Ra_khhzuFlE
- overcast 9y ago"If you hire a guy named Tex Johnson to demo a plane, don't be surprised at what he does...." - rockthestrand Edit. We cool?
- hermitdev 9y agoBoeing also did a near-vertical take off in the 787 during their initial tests (and a few times after at air shows) This video [1] from a past Paris air show, shows a 787 ready for a delivery to Vietnam Airlines doing a very aggressive & short (but not vertical take off). Pretty ballsy to do such a thing in such an expensive jet that's on its way to delivery to a client. [1] https://www.youtube.com/watch?v=B5_8D8HCnS4 https://www.youtube.com/watch?v=B5_8D8HCnS4
- overcast 9y agoAccording to comments, it was nowhere near vertical, which is why they didn't show it from a side angle. Apparently indicator light goes off at 30 degrees, indicating imminent engine stall.
- Sharlin 9y agoThe video is filmed from a distance using a long telephoto lens, compressing the perspective. The 2011 movie Tinker Tailor Soldier Spy used the trick in a similar scene to a great dramatic effect [1]. [1] https://petapixel.com/2016/01/25/this-dramatic-shot-was-done-with-a-2000mm-lens/ https://petapixel.com/2016/01/25/this-dramatic-shot-was-done...
- stordoff 9y agoIs that a scene that makes more sense in context? Out of context, I'm having somewhat of a hard time distinguishing it from a bad composition.
- schoen 9y agoOne of the characters is trying to get information out of the other by threatening him with being put on the plane, which, it's implied, would take him to an extremely disagreeable destination. (Unintentionally reduced spoilers due to having forgotten many details of the film.)
- 9y ago
- rhcom2 9y agoAlso how about a C-27J doing both a backflip and an aileron roll: https://www.youtube.com/watch?v=JTn6JiU2J6U https://www.youtube.com/watch?v=JTn6JiU2J6U or a C-130 taking off and landing on an aircraft carrier: https://www.youtube.com/watch?v=ar-poc38C84 https://www.youtube.com/watch?v=ar-poc38C84 isn't modern flight awesome?
- mcguire 9y agoLike the video of the Los Angeles class submarine emergency surfacing, those make me wonder how much junk was flying around the cabin.
- andrewflnr 9y agoAre you thinking of this one? https://www.youtube.com/watch?v=eOqalX5FJ2c https://www.youtube.com/watch?v=eOqalX5FJ2c
- mcguire 9y agoYes. I have a cousin who was stationed on a ballistic missile sub; I keep meaning to ask him how much crockery they had left after that.
- zentiggr 9y agoThe sub is actually already rigged to keep most loose things under control even under normal running... with any advance warning (most emergency blows are planned ;-) everyone has the time to secure things in lockers etc. That said, standing on a vinyl tiled deck in the peak angle point of one is a trip!
- falcolas 9y agoSince a properly executed barrel roll can be a 1-G maneuver, it's technically possible in any aircraft. The reason most aircraft are incapable of flying upside down isn't usually due to stresses on the airframe, it's because the fueling system relies on some form of force pushing the fuel through the bottom of the aircraft. A 1-G barrel roll does exactly that. There's some interesting trickery done with carbureted aerobatic aircraft to let them fly upside down for an extended period of time, including special valves which shut off fuel flow to the bowls when gravity isn't in the direction they expect it to be, so the aircraft won't lose that fuel back into the fueling system (or out the top of the engine) and can run for a bit on that fuel in the carburetor bowls until the plane is righted.
- elmar 9y agoelectrical planes don't have this problem.
- falcolas 9y agoNor do fuel injected engines, nor jet engines. Electrical planes have a weight issue with the need for batteries (or humongous wings covered with solar panels). Petroleum products, for better or worse, still have a huge advantage in the energy/weight department.
- sathackr 9y agoHow does the fuel get from the tank to the jet or fuel injected engine when the pickup is on the bottom of the now upside-down tank? There are ways to ensure fuel delivery, but the problem certainly isn't unique to carbureted engines, only the particular issue of managing the fuel in the carburetor bowl.
- Neliquat 9y agoThe issue is a non issue. For ages in planes, race cars, etc we have had fuel cells. A few types exist, from just adding more baffles and pickups with vapor locks, to fuel bags (no air to make it to pickup) or the more modern foam matrices that use capilary effect.
- ruleabidinguser 9y ago>The discussion usually ends there :) Personally don't think this should be a point of pride.
- kpao 9y agoIf we get a strange claim like "The 737 at MLW should have a stable approach speed of 170kts, with 70% N1 and 5 degrees of pitch", then asking for a source of information seems pretty reasonable here... They usually don't find it because it is based on "shower curtain" type of sources. ("my brother told me", or "this other sim behaves this way")
- Cthulhu_ 9y agoI do - surely you know how much time is wasted on pointless and unmotivated debates (e.g. on whether or not an airliner can do a barrel roll)
- ATsch 9y agoSo, did you ever actually get accurate reports from pilots and make changes to the behaviour?
- kpao 9y agoYes we did, we actually have plenty of airline pilots in the community who have given feedback we incorporated into the sim.
- jacquesm 9y agohttps://www.youtube.com/watch?v=2Bvhov0nxPQ https://www.youtube.com/watch?v=2Bvhov0nxPQ That one? The loss of altitude the moment the wings are vertical is crazy.
- iwintermute 9y agoWait what? "THE NEXT GENERATION FLIGHT SIMULATOR" as per your web site - but you're ios/android mobile game. I wonder what systems do you really simulate.