Timeline for Why 1st and 2nd class but not fast or slow airplanes?
Current License: CC BY-SA 3.0
15 events
| when toggle format | what | by | license | comment | |
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| Oct 13, 2014 at 12:42 | comment | added | rbp | @JanHudec Parasite drag is the right edit. | |
| Oct 13, 2014 at 12:40 | comment | added | rbp | @BurhanKhalid there is no reference for 250KIAS as L/Dmax because there isn't one. | |
| Oct 13, 2014 at 7:56 | history | edited | Jan Hudec | CC BY-SA 3.0 |
added 45 characters in body
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| Oct 13, 2014 at 7:56 | comment | added | Jan Hudec | @BurhanKhalid: No, definitely didn't come from that. Probably a little too high too; I recall reading A320 has Vy of 220 KIAS, but not sure where. The actual value varies between aircraft and for given aircraft with weight. And best glide distance speed, which is more relevant here, is higher than Vy (though I wrote minimum drag and that means Vy). | |
| Oct 13, 2014 at 6:01 | comment | added | Burhan Khalid | @rbp the 250 is the general imposed limit below 10,000 ft in the US, maybe that's where the figure came from. | |
| Oct 13, 2014 at 5:12 | comment | added | Jan Hudec | @rbp: Lower air density reduces more than friction, but indeed not all drag. The most precise without complicating the discussion is probably using 'parasite drag' or 'form drag'. And the end effect is not that the aircraft flies with less total drag, but that it flies faster with given drag. | |
| Oct 13, 2014 at 5:10 | history | edited | Jan Hudec | CC BY-SA 3.0 |
flying higher does not reduce induced drag, only parasite drag
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| Oct 12, 2014 at 23:10 | comment | added | rbp | I changed 'reduces drag' to 'reduces friction,' and someone changed it back. There are many different causes of drag, and friction is one of them, the one which is alleviated by lower air density. | |
| S Oct 12, 2014 at 23:05 | history | edited | Keegan | CC BY-SA 3.0 |
changed form drag to parasite drag (as its called in English)
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| S Oct 12, 2014 at 23:05 | history | suggested | rbp | CC BY-SA 3.0 |
changed form drag to parasite drag (as its called in English)
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| Oct 12, 2014 at 22:59 | comment | added | rbp | Can you cite a reference for the 250KIAS figure? | |
| Oct 12, 2014 at 22:57 | review | Suggested edits | |||
| S Oct 12, 2014 at 23:05 | |||||
| Oct 10, 2014 at 15:40 | history | edited | Jan Hudec | CC BY-SA 3.0 |
300 knots is too much for Vy
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| May 14, 2014 at 14:49 | vote | accept | Quora Feans | ||
| May 7, 2014 at 9:08 | history | answered | Jan Hudec | CC BY-SA 3.0 |