Overall pressure ratio: Revision history

9 December 2024

• curprev 22:4322:43, 9 December 2024 J. Geerink talk contribs 8,855 bytes −12 Changed wording (doesn't technically have to be a measurement) and slightly rearranged layout. undo Tags: Mobile edit Mobile web edit
• curprev 20:2220:22, 9 December 2024 J. Geerink talk contribs 8,867 bytes +20 Rearranged text, fixed hyperlink by making it piped. undo Tags: Mobile edit Mobile web edit
• curprev 20:1920:19, 9 December 2024 J. Geerink talk contribs 8,847 bytes +155 Improved lead section & removed inaccuracy. undo Tags: Mobile edit Mobile web edit

8 December 2024

• curprev 10:5610:56, 8 December 2024 J. Geerink talk contribs 8,692 bytes +98 →Advantages of high overall pressure ratios: Minor edit undo Tags: Mobile edit Mobile web edit
• curprev 03:2603:26, 8 December 2024 J. Geerink talk contribs 8,594 bytes +40 →Advantages of high overall pressure ratios undo Tags: Mobile edit Mobile web edit

7 December 2024

• curprev 09:0809:08, 7 December 2024 J. Geerink talk contribs 8,554 bytes +15 →Advantages of high overall pressure ratios: Made table collapsable :) undo Tags: Mobile edit Mobile web edit
• curprev 08:5508:55, 7 December 2024 J. Geerink talk contribs 8,539 bytes 0 →Advantages of high overall pressure ratios: Fixed typo. (us --> is) undo Tags: Mobile edit Mobile web edit

6 December 2024

• curprev 21:3721:37, 6 December 2024 J. Geerink talk contribs 8,539 bytes +1,250 →Advantages of high overall pressure ratios: Added table that shows the theoretical thermal efficiencies associated with certain pressure ratios/increases in efficiency due to increases in compressor stages. undo Tags: Mobile edit Mobile web edit

5 December 2024

• curprev 11:5011:50, 5 December 2024 J. Geerink talk contribs 7,289 bytes −3 The new description is more a bit more accurate (Pressure ratio isn't really a measurement, but rather a ratio of two scalar values/measurements. Technically there also isn't really a need to "measure", as even without it the engine will still have a pressure ratio.). It is three character shorter (35 vs 32), as well as being ever so slightly more descript. I think it's somewhat important to include (as long as it doesn't come at the cost of it geting too long/over 40 characters.) that OPR is... undo Tags: Mobile edit Mobile web edit

4 December 2024

• curprev 14:5814:58, 4 December 2024 GhostInTheMachine talk contribs 7,292 bytes −74 Changing short description from "The amount of times the pressure increases due to ram compression and the work done by the compressor stages." to "Measurement in a gas turbine engine" undo Tag: Shortdesc helper
• curprev 13:2813:28, 4 December 2024 J. Geerink talk contribs 7,366 bytes +68 Undid revision 1260974495 by LR.127 (talk) undo Tag: Undo

3 December 2024

• curprev 16:1916:19, 3 December 2024 LR.127 talk contribs 7,298 bytes −68 Changing short description from "The amount of times the pressure increases due to ram compression and the work done by the compressor stages." to "Ratio of pressure in a gas turbine engine" undo Tags: Shortdesc helper Reverted
• curprev 14:5914:59, 3 December 2024 J. Geerink talk contribs 7,366 bytes +35 Improved/replaced short description. undo Tags: Mobile edit Mobile web edit

2 December 2024

• curprev 00:5800:58, 2 December 2024 J. Geerink talk contribs 7,331 bytes +105 Added links other interesting, tangentially related, Wikipedia articles. undo Tags: Visual edit Mobile edit Mobile web edit
• curprev 00:4400:44, 2 December 2024 J. Geerink talk contribs 7,226 bytes +39 →Disadvantages of high overall pressure ratios undo Tags: Mobile edit Mobile web edit

1 December 2024

• curprev 22:3722:37, 1 December 2024 J. Geerink talk contribs 7,187 bytes +289 →Advantages of high overall pressure ratios: Added paragraph that makes it clear that pressure ratio scales exponentially with the number of compressor stages :) undo Tags: Mobile edit Mobile web edit

30 November 2024

• curprev 23:4723:47, 30 November 2024 AnomieBOT talk contribs m 6,898 bytes +19 Dating maintenance tags: {{Citation needed}} undo
• curprev 21:4621:46, 30 November 2024 J. Geerink talk contribs 6,879 bytes +373 Added equation that provides theoretical thermal efficiency using pressure ratio. undo Tags: Mobile edit Mobile web edit

7 July 2024

• curprev 20:0920:09, 7 July 2024 S-Aura talk contribs 6,506 bytes +1 Minor edit undo Tags: Mobile edit Mobile web edit

17 April 2022

• curprev 09:0409:04, 17 April 2022 Bri talk contribs m 6,505 bytes −1 →Examples: caps, punct. undo

24 November 2021

• curprev 09:0209:02, 24 November 2021 AnomieBOT talk contribs m 6,506 bytes +19 Dating maintenance tags: {{Disputed-section}} undo
• curprev 07:0107:01, 24 November 2021 147.86.223.11 talk 6,487 bytes +21 →Advantages of high overall pressure ratios: add disputed tag to efficiency claims, see talk page for details undo

4 November 2021

• curprev 05:3805:38, 4 November 2021 Citation bot talk contribs 6,466 bytes −4 Alter: title. | Use this bot. Report bugs. | Suggested by Whoop whoop pull up | #UCB_webform 2017/2186 undo

10 October 2021

• curprev 08:0808:08, 10 October 2021 Jarrod Baniqued talk contribs m 6,470 bytes +97 No edit summary undo Tags: Mobile edit Mobile app edit iOS app edit

25 April 2021

• curprev 01:2601:26, 25 April 2021 Whoop whoop pull up talk contribs 6,373 bytes +432 →Differences from other similar terms undo

24 January 2021

• curprev 21:1021:10, 24 January 2021 Pieter1963 talk contribs 5,941 bytes −1,763 →Compression ratio versus overall pressure ratio: deleted confusing section, see talk undo Tag: Manual revert
• curprev 21:0921:09, 24 January 2021 Pieter1963 talk contribs 7,704 bytes +1,763 Undid revision 1002523040 by Pieter1963 (talk) undo Tags: Undo Reverted
• curprev 21:0821:08, 24 January 2021 Pieter1963 talk contribs 5,941 bytes −1,763 Deleted confusing section undo Tag: Reverted

19 February 2020

• curprev 12:3512:35, 19 February 2020 Nimbus227 talk contribs m 7,704 bytes +384 Reverted edits by 2405:205:2128:6D10:1AA8:204B:5997:51A8 (talk) to last version by Concord113 undo Tag: Rollback
• curprev 11:4911:49, 19 February 2020 2405:205:2128:6d10:1aa8:204b:5997:51a8 talk 7,320 bytes −384 No edit summary undo Tags: Visual edit Mobile edit Mobile web edit

26 January 2020

• curprev 02:4502:45, 26 January 2020 Concord113 talk contribs m 7,704 bytes −5 →Compression ratio versus overall pressure ratio: Tidy text undo
• curprev 02:4202:42, 26 January 2020 Concord113 talk contribs m 7,709 bytes −78 →Compression ratio versus overall pressure ratio: remove superfluous words undo

14 June 2019

• curprev 14:1714:17, 14 June 2019 Marc Lacoste talk contribs 7,787 bytes +411 →Advantages of high overall pressure ratios: The GE Catalyst has a 16:1 OPR and its thermal efficiency is 40%, the 32:1 Pratt & Whitney GTF has a thermal efficiency of 50% and the 58:1 GEnx has a thermal efficiency of 58%. undo

29 May 2019

• curprev 12:0012:00, 29 May 2019 Entranced98 talk contribs 7,376 bytes +1 →Compression ratio versus overall pressure ratio: Fix misspelling found by Wikipedia:Typo Team/moss – you can help! undo

31 January 2019

• curprev 19:4919:49, 31 January 2019 DbivansMCMLXXXVI talk contribs 7,375 bytes −854 →Examples: Removing unsourced complaint from the article. This belongs in the talk section. And it is disproven by the reference sourced already. undo

7 May 2018

• curprev 16:5016:50, 7 May 2018 86.50.116.35 talk 8,229 bytes +370 →Compression ratio versus overall pressure ratio undo
• curprev 16:4416:44, 7 May 2018 86.50.116.35 talk 7,859 bytes −1 No edit summary undo
• curprev 16:4216:42, 7 May 2018 86.50.116.35 talk 7,860 bytes +695 Added a note on overall pressure ratio of concorde, as the source uses a different and contradictory definition than this article does. Shockwaves reduce stagnation pressure at intake in supersonic flight, they only increase static pressure! undo

31 May 2017

• curprev 18:0218:02, 31 May 2017 Marc Lacoste talk contribs 7,165 bytes +61 →Examples: General Electric GE9X 60:1 777X undo

9 February 2017

• curprev 20:0420:04, 9 February 2017 John of Reading talk contribs m 7,104 bytes 0 →Differences from other similar terms: Typo fixing, replaced: conciderations → considerations using AWB undo

8 November 2016

• curprev 07:3607:36, 8 November 2016 Marc Lacoste talk contribs m 7,104 bytes 0 →Examples: note below undo

30 October 2016

• curprev 08:0308:03, 30 October 2016 Dawnseeker2000 talk contribs 7,104 bytes −3 Typo fixing, typo(s) fixed: between 40 to → between 40 and using AWB undo

28 October 2016

• curprev 13:0613:06, 28 October 2016 Marc Lacoste talk contribs 7,107 bytes +99 →Compression ratio versus overall pressure ratio: thumb|Compression ratio versus pressure ratio undo
• curprev 12:5012:50, 28 October 2016 Marc Lacoste talk contribs 7,008 bytes +497 →Compression ratio versus overall pressure ratio: from Compression_ratio#Compression_ratio_versus_overall_pressure_ratio, see Talk:Compression_ratio#compression_ratio_vs_overall_pressure_ratio undo
• curprev 12:1812:18, 28 October 2016 Marc Lacoste talk contribs 6,511 bytes +301 updated usual OPR + ref undo

26 October 2016

• curprev 01:1101:11, 26 October 2016 Dawnseeker2000 talk contribs 6,210 bytes +10 Typo fixing, replaced: SNECMA Atar → Snecma Atar, General Dynamics F-111 → General Dynamics F-111 Aardvark, typo(s) fixed: Nevertheless → Nevertheless, using AWB undo

6 June 2016

• curprev 21:5221:52, 6 June 2016 86.137.175.104 talk 6,200 bytes +8 →Examples undo

16 May 2016

• curprev 04:3804:38, 16 May 2016 BG19bot talk contribs m 6,192 bytes +6 →top: WP:CHECKWIKI error fix for #62. Left off http://. Do general fixes if a problem exists. -, replaced: <ref>www. → <ref>http://www. undo

15 May 2016

• curprev 22:1622:16, 15 May 2016 72.43.123.22 talk 6,186 bytes +1 fix typo undo

9 May 2016

• curprev 18:1118:11, 9 May 2016 Pieter1963 talk contribs 6,185 bytes +423 clarified definition undo