Results 1 to 10 of about 8,114 (97)

Design Considerations of Low Bypass Ratio Mixed Flow Turbofan Engines with Large Power Extraction [PDF]

open access: yesFluids, 2022
The possibility of extracting large amounts of electrical power from turbofan engines is becoming increasingly desirable from an aircraft perspective. The power consumption of a future fighter aircraft is expected to be much higher than today’s fighter aircraft.
Daniel Rosell, Tomas Grönstedt
openaire   +2 more sources

Sliding Mode Control for Micro Turbojet Engine Using Turbofan Power Ratio as Control Law [PDF]

open access: yesEnergies, 2020
The interest in turbojet engines was emerging in the past years due to their simplicity. The purpose of this article is to investigate sliding mode control (SMC) for a micro turbojet engine based on an unconventional compound thermodynamic parameter called Turbofan Power Ratio (TPR) and prove its advantage over traditional linear methods and thrust ...
Khaoula Derbel, Károly Beneda
openaire   +2 more sources

LINEAR DYNAMIC MATHEMATICAL MODEL AND IDENTIFICATION OF MICRO TURBOJET ENGINE FOR TURBOFAN POWER RATIO CONTROL

open access: yesAviation, 2019
Micro turbojets can be used for propulsion of civilian and military aircraft, consequently their investigation and control is essential. Although these power plants exhibit nonlinear behaviour, their control can be based on linearized mathematical models in a narrow neighbourhood of a selected operating point and can be extended by using robust control
Khaoula Derbel, Károly Beneda
openaire   +4 more sources

Recursive least squares for online dynamic identification on gas turbine engines [PDF]

open access: yes, 2016
Online identification for a gas turbine engine is vital for health monitoring and control decisions because the engine electronic control system uses the identified model to analyze the performance for optimization of fuel consumption, a response to ...
Nalianda, Devaiah   +2 more
core   +1 more source

Gas turbine engine emission reduction technology program [PDF]

open access: yes, 1978
Progress in the development of combustor technology to meet the standards for the allowable pollutant emission levels of aircraft gas turbine engines is reported.
Diehl, L. A., Petrash, D. A.
core   +1 more source

Status of advanced turboprop technology [PDF]

open access: yes, 1978
Research is reviewed in the following areas: turboprop powered transport aircraft; wind tunnel aerodynamic and acoustics tests of model propellers; turboprop maintenance; and wind tunnel tests on airframe-turboprop interactions.
Dugan, J. F.   +2 more
core   +1 more source

Investigation of Turbojet Engine Performance in Subsonic Flight Conditions with Turbofan Power Ratio as Thrust Parameter

open access: yesPeriodica Polytechnica Transportation Engineering
Turbojet engines have been used for many decades in aviation. Although their share in civil aviation is minimal, with the advent of Unmanned Aerial Vehicles (UAV's) there are new applications. Their operation depends on complex aero-thermodynamic laws, and optimum performance is strongly affected by the control system.
Khaoula Derbel, Károly Beneda
openaire   +1 more source

QCGAT aircraft/engine design for reduced noise and emissions [PDF]

open access: yes, 1980
The high bypass ratio QCGAT engine played an important role in shaping the aircraft design. The aircraft which evolved is a sleek, advanced design, six-place aircraft with 3538 kg (7,800 lb) maximum gross weight. It offers a 2778 kilometer (1500 nautical
Lanson, L., Terrill, K. M.
core   +1 more source

Study of unconventional aircraft engines designed for low energy consumption [PDF]

open access: yes
A study of unconventional engine cycle concepts, which may offer significantly lower energy consumption than conventional subsonic transport turbofans, is described herein.
Hirschkron, R.   +2 more
core   +1 more source

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