{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,23]],"date-time":"2025-10-23T16:42:23Z","timestamp":1761237743527},"reference-count":12,"publisher":"American Association of Physics Teachers (AAPT)","issue":"8","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2010,8,1]]},"abstract":"<jats:p>We use the first and second laws of thermodynamics to analyze the behavior of an ideal jet engine. Simple analytical expressions for the thermal efficiency, the overall efficiency, and the reduced thrust are derived. We show that the thermal efficiency depends only on the compression ratio r and on the velocity of the aircraft. The other two performance measures depend also on the ratio of the temperature at the turbine to the inlet temperature in the engine, T3\/Ti. An analysis of these expressions shows that it is not possible to choose an optimal set of values of r and T3\/Ti that maximize both the overall efficiency and thrust. We study how irreversibilities in the compressor and the turbine decrease the overall efficiency of jet engines and show that this effect is more pronounced for smaller T3\/Ti.<\/jats:p>","DOI":"10.1119\/1.3373924","type":"journal-article","created":{"date-parts":[[2010,8,25]],"date-time":"2010-08-25T22:40:17Z","timestamp":1282776017000},"page":"809-814","update-policy":"http:\/\/dx.doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":4,"title":["Simple thermodynamics of jet engines"],"prefix":"10.1119","volume":"78","author":[{"given":"Pedro","family":"Patr\u00edcio","sequence":"first","affiliation":[{"name":"Instituto Superior de Engenharia de Lisboa , Rua Conselheiro Em\u00eddio Navarro 1, P-1949-014 Lisboa, Portugal and Centro de F\u00edsica Te\u00f3rica e Computacional, , Avenida Professor Gama Pinto 2, P-1649-003 Lisboa Codex, Portugal"},{"name":"Universidade de Lisboa , Rua Conselheiro Em\u00eddio Navarro 1, P-1949-014 Lisboa, Portugal and Centro de F\u00edsica Te\u00f3rica e Computacional, , Avenida Professor Gama Pinto 2, P-1649-003 Lisboa Codex, Portugal"}]},{"given":"Jos\u00e9 M.","family":"Tavares","sequence":"additional","affiliation":[{"name":"Instituto Superior de Engenharia de Lisboa , Rua Conselheiro Em\u00eddio Navarro 1, P-1949-014 Lisboa, Portugal and Centro de F\u00edsica Te\u00f3rica e Computacional, , Avenida Professor Gama Pinto 2, P-1649-003 Lisboa Codex, Portugal"},{"name":"Universidade de Lisboa , Rua Conselheiro Em\u00eddio Navarro 1, P-1949-014 Lisboa, Portugal and Centro de F\u00edsica Te\u00f3rica e Computacional, , Avenida Professor Gama Pinto 2, P-1649-003 Lisboa Codex, Portugal"}]}],"member":"3","published-online":{"date-parts":[[2010,7,14]]},"reference":[{"key":"2023080809291498200_c1","volume-title":"Physics for Scientists and Engineers","year":"1996","edition":"2nd ed."},{"key":"2023080809291498200_c2","volume-title":"Thermodynamics: An Engineering Approach","year":"1998","edition":"3rd ed."},{"key":"2023080809291498200_c3","volume-title":"Fundamentals of Engineering Thermodynamics","year":"2006","edition":"5th ed."},{"key":"2023080809291498200_c4"},{"key":"2023080809291498200_c5"},{"key":"2023080809291498200_c6","volume-title":"Fundamentals of Jet Propulsion with Applications","year":"2005"},{"key":"2023080809291498200_c7","volume-title":"Hypersonic Airbreathing Propulsion","year":"1994"},{"key":"2023080809291498200_c8","article-title":"Thermodynamics and propulsion"},{"key":"2023080809291498200_c9"},{"key":"2023080809291498200_c10"},{"key":"2023080809291498200_c11","volume-title":"Fundamentals of Aerodynamics","year":"1991","edition":"2nd ed."},{"key":"2023080809291498200_c12","volume-title":"Aircraft Structures for Engineering Students","year":"2008","edition":"4th ed."}],"container-title":["American Journal of Physics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.aip.org\/aapt\/ajp\/article-pdf\/78\/8\/809\/13098769\/809_1_online.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.aip.org\/aapt\/ajp\/article-pdf\/78\/8\/809\/13098769\/809_1_online.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,8]],"date-time":"2023-08-08T09:29:23Z","timestamp":1691486963000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.aip.org\/ajp\/article\/78\/8\/809\/1058347\/Simple-thermodynamics-of-jet-engines"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2010,7,14]]},"references-count":12,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2010,8,1]]}},"URL":"https:\/\/doi.org\/10.1119\/1.3373924","relation":{},"ISSN":["0002-9505","1943-2909"],"issn-type":[{"value":"0002-9505","type":"print"},{"value":"1943-2909","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2010,8]]},"published":{"date-parts":[[2010,7,14]]}}}