Timeline for Why don't airports use arresting gears to recover energy from landing passenger planes?
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17 events
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| Sep 16, 2019 at 15:10 | history | edited | DeltaLima♦ | CC BY-SA 4.0 |
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| S Sep 16, 2019 at 15:08 | history | suggested | CJ Dennis | CC BY-SA 4.0 |
Replace unclear "KEUR" with "K€"
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| Sep 16, 2019 at 12:46 | review | Suggested edits | |||
| S Sep 16, 2019 at 15:08 | |||||
| Sep 16, 2019 at 12:20 | comment | added | J... | @MSalters Yes, a flywheel would probably be part of the solution, but you could not connect it directly to the arresting cable. The latter would need special engineering to match the variable load profiles required by various aircraft, I think, and the main point is that it would certainly add to the (already prohibitive) cost of the system. | |
| Sep 16, 2019 at 11:57 | comment | added | J... | @MartinBonner Grid connection follows rules, but each case is also evaluated individually (connection impact assessment) - what may be acceptable in one area may not be in another depending on the capacity of the local grid. The grid certainly does not like spikes, however, so I doubt they would approve a direct-to-grid momentary dump generation scheme like this. You can't magically increase the grid load so all it would do is generate a voltage spike. The energy producer would almost certainly be required to regulate the output to deliver it continuously over a much longer period of time. | |
| Sep 16, 2019 at 9:38 | comment | added | MSalters | If that's 75MJ in 15 seconds (planes don't stop immediately after all), you only have 5MW. It doesn't need to be absorbed by the grid at all; that's locally consumed by the airport. IOW, no need to upgrade the grid connection of the airport. Having said that, the engineering solution would be a flywheel that's spun up by the unspooling of the cable. That already gives you the energy store needed. | |
| Sep 16, 2019 at 7:01 | comment | added | Martin Bonner supports Monica | @J... Actually, I think the grid can very comfortably absorb 75MJ (unless you have references to show it can't). | |
| Sep 15, 2019 at 12:06 | comment | added | J... | Also, 21kWh generated in a few seconds would need to be stored somewhere - the grid isn't just a dumping ground where you can pour electricity in like a pot whenever you like. This system would need huge infrastructure to store this generated power and deliver it to the grid at a sustained regular rate. | |
| Sep 15, 2019 at 11:09 | comment | added | miroxlav | Maybe if you could replace 95 KEUR with 95k €? (If I am guessing correctly that by K you meant k, a prefix for kilo=1000, not K=1024.) | |
| Sep 14, 2019 at 6:00 | comment | added | John Dvorak | I imagine one would use an aircraft carrier style sling, except much longer (have fun managing the unrolling - and then rolling up - of about 2km of tape) and softer (so that the cargo doesn't come out damaged). Still, if the pilot catches the sling and then decides for touch-and-go... the recuperator is likely to break and cause significant damage to airport equipment. | |
| Sep 13, 2019 at 22:10 | comment | added | Peter | Not only business (capitalism is a bad guidance), it is likely physically ineffective, therefore environmentally ineffective? | |
| Sep 13, 2019 at 21:22 | comment | added | Russell McMahon | Just look at the 'savings' per flight. | |
| Sep 13, 2019 at 20:55 | history | edited | DeltaLima♦ | CC BY-SA 4.0 |
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| Sep 13, 2019 at 12:46 | vote | accept | Sven Hans | ||
| Sep 13, 2019 at 12:12 | history | edited | DeltaLima♦ | CC BY-SA 4.0 |
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| Sep 13, 2019 at 11:53 | history | edited | DeltaLima♦ | CC BY-SA 4.0 |
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| Sep 13, 2019 at 11:41 | history | answered | DeltaLima♦ | CC BY-SA 4.0 |