Results 91 to 100 of about 10,232 (233)

An Estimate of the Influence of the Compressor Stability Margin on the Pick-Up Time of a Turbojet Engine

open access: yesEngineering Transactions, 1991
The relations are derived enabling to estimate the acceleration time of the turbojet engine rotor set. The terms are established allowing for the determination of the effect of individual operational and structural engine parameters upon the time needed
M. Orkisz
doaj  

Hypersonic cruise aircraft propulsion integration study, volume 1 [PDF]

open access: yes
A hypersonic cruise transport conceptual design is described. The integration of the subsonic, supersonic, and hypersonic propulsion systems with the aerodynamic design of the airframe is emphasized.
Brewer, G. D., Morris, R. E.
core   +1 more source

Turbine for ordnance turbojet engine. 2: Cold-air performance with opened stator [PDF]

open access: yes
A single-stage axial-flow turbine was investigated to determine the effect of increased stator throat area on the performance level of a turbojet engine turbine.
Haas, J. E.   +2 more
core   +1 more source

Pollution reduction technology program for small jet aircraft engines: Class T1 [PDF]

open access: yes, 1977
Small jet aircraft engines (EPA class T1, turbojet and turbofan engines of less than 35.6 kN thrust) were evaluated with the objective of attaining emissions reduction consistent with performance constraints.
Bruce, T. W.   +2 more
core   +1 more source

Self-tuning speed and flow control of micro turbojet engines based on an improved evolutionary strategy

open access: yesAutomatika
At present, the controllable parameters of micro turbojet engines in engineering applications are mainly speed-fuel flow (hereinafter referred to as flow) control, in which closed-loop proportional–integral–derivative (PID) control is mostly used to ...
Q. Gao, Jiahao Li, Yuxin Zhang
doaj   +1 more source

Effects of chemical equilibrium on turbine engine performance for various fuels and combustor temperatures [PDF]

open access: yes
A study was performed to quantify the differences in turbine engine performance with and without the chemical dissociation effects for various fuel types over a range of combustor temperatures.
Snyder, Christopher A., Tran, Donald H.
core   +1 more source

Micro turbojet engine nozzle ejector impact on the performance and transient regimes analysis

open access: yesCase Studies in Thermal Engineering
This study investigates the influence of an ejector nozzle on the performance and transient behavior of a micro turbojet engine. The problem addressed is the improvement of thrust and fuel efficiency in micro propulsion systems and offering new insights ...
Valentin Silivestru   +4 more
doaj   +1 more source

Self-teaching digital-computer program for fail-operational control of a turbojet engine in a sea-level test stand [PDF]

open access: yes
The design and evaluation are described of a digital turbojet engine control which is capable of sensing catastrophic failures in either the engine rotor speed or the compressor discharge static-pressure signal and is capable of switching control modes ...
Arpasi, D. J., Wallhagen, R. E.
core   +1 more source

A Soviet quasi-market for inventions : jet propulsion, 1932–1946 [PDF]

open access: yes
This paper is about how a command system allocated resources under profound uncertainty. The command system was the Soviet economy, the period was Stalin's dictatorship, and the resources were designated for military research & development.
Harrison, Mark
core   +1 more source

Analysis, Design and Development of a Mini Jet Turbocharged Engine for Use in a Thermotronic Laboratory [PDF]

open access: yesفناوری در مهندسی هوافضا, 2019
Giventhe importance of air engine control systems and the necessity of developing this specialty in the country, the establishment of appropriate infrastructures for implementing applied research in this section field is very important.
Kamyar Nikzadfar   +3 more
doaj  

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