BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/Los_Angeles BEGIN:DAYLIGHT DTSTART:20230312T030000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:PDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20231105T010000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:PST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20230930T171728Z UID:606ECC2A-1727-40BB-BA1B-801570DD740B DTSTART;TZID=America/Los_Angeles:20230912T173000 DTEND;TZID=America/Los_Angeles:20230912T190000 DESCRIPTION:Over the years\, the aircraft turbojet engine has evolved into one of the most intricate multivariable systems\, pivotal in human transpo rtation. It serves not only as a thermodynamic power converter but also as a constant arena for technological advancement. Achieving optimal control and addressing diagnostic challenges necessitates a comprehensive underst anding of these engines' parameters and performance aspects. Often\, criti cal technical details of jet engines remain elusive\, with only limited in formation available in manufacturer catalogs. The primary challenge lies i n calculating and extrapolating vital performance parameters\, relying sol ely on data such as fuel flow\, jet exhaust temperature\, and turbine rota tion speed.\n\nThe impetus for this study stemmed from the need to investi gate a recurring issue with several turbojet engines experiencing severe f ailures during operation. The turbine blades suffered extensive damage in each instance due to excessive heat exposure. The initial step in addressi ng these problems was developing a mathematical model and dynamic analysis of the turbojet engine. A transfer function for the turbojet engine was d efined from operational characteristics and experimental test data. This t ransfer function described the turbine rotation speed as a controlled para meter\, with fuel flow as the controlling parameter. Determining total gai n and time constant parameters revealed them as nonlinear functions\, prim arily reliant on the turbojet engine's mechanical characteristics and ther modynamic processes. Subsequent to establishing consistent initial conditi ons\, the simulation results were scrutinized and compared with experiment al test data. In terms of dynamic behavior\, this study underscores the hi gh fidelity of the presented mathematical model for turbojet engines. The simulation results demonstrated a numeric accuracy exceeding 1.5%\, highli ghting the model's effectiveness in replicating real-world performance.\n\ nCo-sponsored by: Seattle University Student Chapter\n\nSpeaker(s): Neno N ovakovic P.E.\n\nAgenda: \n5.30 Pm to 6.00 PM Networking and Dinner\n6.00 PM to 6.05 Welcome by Seattle Section Chair\n6.05 PM to 6.50 PM Tech Talk and Question hour.\n\nRoom: Bannan 629\, Bldg: Bannan Engineering Buildin g\, Seattle University\, 901 12th Ave\, Seattle\, WA 98122\, Seattle\, Was hington\, United States\, 98122\, Virtual: https://events.vtools.ieee.org/ m/373071 LOCATION:Room: Bannan 629\, Bldg: Bannan Engineering Building\, Seattle Un iversity\, 901 12th Ave\, Seattle\, WA 98122\, Seattle\, Washington\, Unit ed States\, 98122\, Virtual: https://events.vtools.ieee.org/m/373071 ORGANIZER:dfischer@ieee.org SEQUENCE:25 SUMMARY:Tech Talk Topic: Mathematical Modeling and Analysis of the Turbojet Engine Dynamic Parameters URL;VALUE=URI:https://events.vtools.ieee.org/m/373071 X-ALT-DESC:Description: <br /><p style="font-weight: 400\;">Over the years\ , the aircraft turbojet engine has evolved into one of the most intricate multivariable systems\, pivotal in human transportation. It serves not onl y as a thermodynamic power converter but also as a constant arena for tech nological advancement. Achieving optimal control and addressing diagnostic challenges necessitates a comprehensive understanding of these engines' p arameters and performance aspects. Often\, critical technical details of j et engines remain elusive\, with only limited information available in man ufacturer catalogs. The primary challenge lies in calculating and extrapol ating vital performance parameters\, relying solely on data such as fuel f low\, jet exhaust temperature\, and turbine rotation speed.</p>\n<p style= "font-weight: 400\;">The impetus for this study stemmed from the need to i nvestigate a recurring issue with several turbojet engines experiencing se vere failures during operation. The turbine blades suffered extensive dama ge in each instance due to excessive heat exposure. The initial step in ad dressing these problems was developing a mathematical model and dynamic an alysis of the turbojet engine. A transfer function for the turbojet engine was defined from operational characteristics and experimental test data. This transfer function described the turbine rotation speed as a controlle d parameter\, with fuel flow as the controlling parameter. Determining tot al gain and time constant parameters revealed them as nonlinear functions\ , primarily reliant on the turbojet engine's mechanical characteristics an d thermodynamic processes. Subsequent to establishing consistent initial c onditions\, the simulation results were scrutinized and compared with expe rimental test data. In terms of dynamic behavior\, this study underscores the high fidelity of the presented mathematical model for turbojet engines . The simulation results demonstrated a numeric accuracy exceeding 1.5%\, highlighting the model's effectiveness in replicating real-world performan ce.</p><br /><br />Agenda: <br /><p style="font-weight: 400\;">5.30 Pm to 6.00 PM Networking and Dinner<br />6.00 PM to 6.05 Welcome by Seattle Sect ion Chair<br />6.05 PM to 6.50 PM Tech Talk and Question hour.</p> END:VEVENT END:VCALENDAR