Timeline for Why do we still interpolate in performance tables?
Current License: CC BY-SA 4.0
18 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 16, 2021 at 9:00 | history | tweeted | twitter.com/StackAviation/status/1438427456709480449 | ||
| Sep 12, 2021 at 3:32 | comment | added | DKNguyen | Those equations are for the physicist and engineer, not the pilot who has better things to do. | |
| Sep 11, 2021 at 0:51 | comment | added | alephzero | The performance of any reasonably "modern" aircraft (i.e. one designed after say 1970) has indeed been modeled by a "formula" and there are even agreed standards for sharing such "formulas," for example between airframe and engine manufacturers, commercial aircraft operators (a.k.a. airlines) etc. However, the "formula" is most likely expressed as 10,000+ lines of computer code, and therefore no use to avoid the OP's interpolation problem. | |
| Sep 11, 2021 at 0:12 | vote | accept | Baron Biscuit | ||
| Sep 10, 2021 at 20:58 | comment | added | user22445 | Way too many variables involved to reduce the performance tables to a single formula. Also, providing tables in the AFM/POH that would be so narrowly constructed so as to eliminate interpolation is not practical. Reading tables and interpolating between values is a skill easily learned and can be done quickly with some experience. | |
| Sep 10, 2021 at 20:28 | answer | added | Apfelsaft | timeline score: 6 | |
| Sep 10, 2021 at 18:31 | comment | added | jamesqf | Re "...in case I ever need to fly an old airplane...", unless you are, or intend to become, quite wealthy, you will almost certainly be flying old airplanes. You might even if you are wealthy, given the limited production of new planes. | |
| Sep 10, 2021 at 17:04 | comment | added | FreeMan | I doubt it's "arrogance", @abelenky, more likely the "ignorance of youth". I'm not a pilot, but I was more than happy to go along with the thought of "plug a few numbers into an equation or two and get the precise answer". No arrogance here, just ignorance. We're all learning and we're all on different places along the journey. If our OP is just staring his journey, he's not much further along than I am, and it's not an unreasonable question. | |
| Sep 10, 2021 at 16:16 | answer | added | Cort Ammon | timeline score: 10 | |
| Sep 10, 2021 at 14:37 | answer | added | Peter Kämpf | timeline score: 12 | |
| Sep 10, 2021 at 12:19 | comment | added | eckes | @stevederekson555 you can use a flight management app or a on-board system if you have one, it is still good to have the manual ability for emergencies, validating the results and also to have a mental model of such flight parameters | |
| Sep 10, 2021 at 7:29 | history | became hot network question | |||
| Sep 10, 2021 at 6:17 | review | Close votes | |||
| Sep 10, 2021 at 12:02 | |||||
| Sep 10, 2021 at 1:41 | answer | added | John K | timeline score: 24 | |
| Sep 9, 2021 at 23:51 | comment | added | stevederekson555 | It sucks but a lot of aviation and aeronautical engineering is indeed measuring with a ruler on black and white graphs made 50 years ago. | |
| Sep 9, 2021 at 23:37 | comment | added | Ron Beyer | Why do you believe it's formula's versus actual measurements at those pressure altitudes? Interpolation is quick, do you think you could run the calculation with "N" number of variables while flying the plane? | |
| S Sep 9, 2021 at 23:14 | review | First questions | |||
| Sep 10, 2021 at 1:21 | |||||
| S Sep 9, 2021 at 23:14 | history | asked | Baron Biscuit | CC BY-SA 4.0 |