Off-Design Characteristics of Low-Fuel Consumption Gas Turbine Engine for Long-Range UAV

2013 ◽  
Author(s):  
Roberto Andriani ◽  
Umberto Ghezzi ◽  
Antonella Ingenito ◽  
Fausto Gamma ◽  
Antonio Agresta
Keyword(s):  
Gas Turbine ◽  
Fuel Consumption ◽  
Long Range ◽  
Gas Turbine Engine ◽  
Turbine Engine ◽  
Design Characteristics

LV100 AIPS Technology—For Future Army Propulsion

1992 ◽  
Author(s):  
Walter Brockett ◽  
Angelo Koschier
Keyword(s):  
Control Systems ◽  
Gas Turbine ◽  
Fuel Consumption ◽  
Cooling System ◽  
Gas Turbine Engine ◽  
Air Filtration ◽  
Turbine Engine ◽  
Overall Design ◽  
Armored Vehicle ◽  
And Control

The overall design of and Advanced Integrated Propulsion System (AIPS), powered by an LV100 gas turbine engine, is presented along with major test accomplishments. AIPS was a demonstrator program that included design, fabrication, and test of an advanced rear drive powerpack for application in a future heavy armored vehicle (54.4 tonnes gross weight). The AIPS design achieved significant improvements in volume, performance, fuel consumption, reliability/durability, weight and signature reduction. Major components of AIPS included the recuperated LV100 turbine engine, a hydrokinetic transmission, final drives, self-cleaning air filtration (SCAF), cooling system, signature reduction systems, electrical and hydraulic components, and control systems with diagnostics/prognostics and maintainability features.

Performance and Emission Characteristics of a Small Scale Gas Turbine Engine Fueled With Propanol/Jet A Blends

2011 ◽  
Author(s):  
Carlos J. Mendez ◽  
Ramkumar N. Parthasarathy ◽  
Subramanyam R. Gollahalli
Keyword(s):  
Gas Turbine ◽  
Fuel Consumption ◽  
Gas Turbine Engine ◽  
Single Stage ◽  
Specific Fuel Consumption ◽  
Small Scale ◽  
Emission Characteristics ◽  
Turbine Engine ◽  
Performance And Emission ◽  
Emission Index

Alcohols serve as an alternate energy resource to the conventional petroleum-based fuels. The objective of this study was to document the performance and emission characteristics of blends of n-propanol and Jet A fuel in a small-scale gas turbine engine. The experiments were conducted in a 30kW gas turbine engine with a single-stage centrifugal flow compressor, annular combustion chamber and a single-stage axial flow turbine. In addition to neat propanol and Jet A fuel, three blends, with 25%, 50% and 75% of propanol by volume, were used as the fuels. The thrust, thrust-specific fuel consumption, and the concentrations of CO and NOx in the exhaust were measured and compared with those measured with Jet A fuel. The engine was operated at the same throttle settings with all the fuels. The operational range of engine rotational speed was shifted downwards with the addition of propanol due to its lower heating value. The thrust specific fuel consumption increased with the addition of propanol, while the CO emission index increased and NOx emission index decreased.

The Choice Gas Turbine Engine Parameters Used to Drive the Oil Pump

2017 ◽  
pp. 29-43
Author(s):  
A. Yu. Brycheva ◽  
V. D. Molyakov
Keyword(s):  
Crude Oil ◽  
Gas Turbine ◽  
Fuel Consumption ◽  
Centrifugal Pump ◽  
Gas Turbine Engine ◽  
Airflow Rate ◽  
Turbine Engine ◽  
Oil Pump ◽  
Power Turbine ◽  
Engine Cycle

The article considers capabilities of the gas turbine engine to be used as a drive of the crude oil pump. It is noted that the gas turbine drive proves to be more advantageous than the electric motor when there is no external power supply or building periods of power transmission lines are significantly long, as well as quantities of oil products pumped are often changed.The main objective of this work is to select the optimum engine cycle parameters for a particular pump model, which oil pumping stations use. As an object of research, a crude oil pump of the НМ 10000 / 1.25-210 brand was chosen. The paper presents technical characteristics of the HM 10000 / 1.25-210 centrifugal pump and experimental values of head, power, and efficiency of the pump for a number of feeds. To obtain the pressure and power characteristics of a centrifugal pump for different rotational speeds of the rotor the similarity formulas are used.As the centrifugal pump drive, the paper considers a two-shaft plant with the free power turbine. This scheme was chosen in accordance with the features of the gas turbine pump unit at the oil pumping station. It is noted that the free power turbine scheme allows us to bring into accordance the characteristics of a gas turbine engine and an oil pump in abnormal modes, since there is no mechanical connection between high and low pressure turbines.The paper presents the calculated parameters of the gas turbine engine cycle with power Ne = 8 MW. The graphs show dependence of the airflow rate GB, the specific fuel consumption Ce and the efficiency ηe on the degree of pressure increase πk in the compressor. In accordance with the graphs, the optimum value of the degree of pressure increase πk = 15 in the compressor  is adopted. With πk = 15, the specific fuel consumption in the gas turbine engine with power Ne = 8 MW is equal to Ce = 0,22 kg/kW*h and the airflow rate is GB = 20,5kg/s. The efficiency of the engine with the selected parameters is ηe = 38,4%.It is noted that in order to ensure the most economical gas turbine engine operation, it is necessary to select the optimal control program, which is determined taking into account the load characteristics, in this case the characteristics of the pump.

scholarly journals Performance Improvement of a 43 MW Class Gas Turbine Engine with Inlet Air Cooling

2021 ◽  
Vol 9 (5) ◽  
pp. 539-544
Keyword(s):  
Gas Turbine ◽  
Fuel Consumption ◽  
Gas Turbine Engine ◽  
Specific Fuel Consumption ◽  
Coefficient Of Performance ◽  
Air Cooling ◽  
Climate Conditions ◽  
Turbine Engine ◽  
Hot Climate ◽  
Fuel Consumption Improvement

In this study, a process of inlet air cooling was implemented in the intake of a land-based gas turbine engine for electricity generation. The motivation behind the study is to improve the performance of the gas turbine engine in hot climate conditions,which causes a significant decrease in the output power and an increase in specific fuel consumption. For inlet air cooling, a refrigeration cycle was attached to the turbo-shaft gas turbine engine,and power required by the refrigeration is extracted from the mechanical engine power output of the gas turbine. A 43 MWclass gas turbine engine which is similar totheGeneral Electric LM6000 engine was modeled in this study. Considering an average coefficient of performance of 3.0 for a refrigeration system, the inlet cooling provided (by supplying cooled inlet air at 15oC) a 22.21% net power increase anda5.2% power specific fuel consumption improvement at 55oCambient conditions.

Reduction of fuel consumption of a small-scale gas turbine engine with fine bubble fuel

Energy ◽  
2020 ◽  
Vol 194 ◽  
pp. 116822
Author(s):  
Yasuhito Nakatake ◽  
Hirofumi Yamashita ◽  
Hiroshi Tanaka ◽  
Hidechika Goto ◽  
Takashi Suzuki
Keyword(s):  
Gas Turbine ◽  
Fuel Consumption ◽  
Gas Turbine Engine ◽  
Small Scale ◽  
Turbine Engine ◽  
Fine Bubble

Development of a Centrifugal Compressor for a Small Gas-Turbine Engine

1956 ◽  
Author(s):  
N. R. Balling ◽  
V. W. van Ornum
Keyword(s):  
Research And Development ◽  
Gas Turbine ◽  
Fuel Consumption ◽  
Centrifugal Compressor ◽  
Pressure Ratio ◽  
Development Program ◽  
Gas Turbine Engine ◽  
Specific Fuel Consumption ◽  
General Description ◽  
Turbine Engine

The objective of the research and development program reported by this paper was to decrease the specific fuel consumption of a small gas-turbine engine by means of an increase in pressure ratio alone. Development of a centrifugal compressor is presented, with a general description of equipment, methods, and special problems met during the tests. Results showed the required decrease in specific fuel consumption and pointed up the advantages of a straightforward development program.

Neuro-Fuzzy Harmful Substances Control of Aircraft Gas Turbine Engine

2020 ◽  
Vol 21 (6) ◽  
pp. 348-355
Author(s):  
N. V. Andrievskaya ◽  
O. A. Andrievskiy ◽  
M. D. Kuznetsov ◽  
T. S. Legotkina ◽  
V. S. Nikulin ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Fuel Consumption ◽  
Atomic Decomposition ◽  
Gas Turbine Engine ◽  
Inert Gases ◽  
Caloric Content ◽  
Turbine Engine ◽  
Neuro Fuzzy ◽  
Harmful Substances ◽  
Aircraft Gas Turbine Engine

One of the directions of aviation development is solving environmental problems, which excludes the emission of harmful substances into the atmosphere (nitric oxide, carbon monoxide) during the operation of an aircraft gas turbine engine (GTE) [1]. At low temperatures, oxygen and nitrogen are inert gases. At temperatures of 1100... 1600 K, oxides are formed, where nitrogen takes a valence of one to five. At temperatures above 1600 K, their atomic decomposition occurs. At temperatures in the range of 1100—1600 K, a reduction in NOx is possible with good mixing and a sufficient length of the combustion chamber, which determines the burning time of gases. If the combustion process is interrupted due to the poor operation of the automation, either vibro-combustion (atomic decomposition of NOx oxide) occurs at a temperature of 1600 K or flame failure occurs at 1100 K. Improving the process of converting the chemical energy of fuel and converting it into mechanical energy under conditions of uncertainty (variable caloric content of kerosene, changes in environmental parameters, wear of control equipment) is possible using neuro-fuzzy control of aviation gas turbine engine emissions into the environment. The control signal will be the fuel consumption in the diffusion manifold. In this case, fuel consumption in homogeneous reservoirs will vary evenly, provided that the total amount of fuel remains constant for the engine under consideration (the thrust should not change in the mode). A dynamic model of a neuro-fuzzy fuel consumption regulator by a diffusion collector has been developed. The method of obtaining training samples " % GT" = f (MNOx) for constructing the neural part of the regulator is presented. The desired " triangular" region of MNOx location (the integral of emission of nitrogen oxide emissions) is determined, on the basis of which control algorithms " with economy" and " without economy" of the MNOx integral are proposed.

Two-coordinate automatic control system for fuel delivery in a gas turbine engine

2012 ◽  
Vol 9 (2) ◽  
pp. 62-64
Author(s):  
E.V. Denisova ◽  
E.Sh. Nasibullaeva ◽  
M.A. Chernikova
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Gas Turbine ◽  
Fuel Consumption ◽  
Gas Turbine Engine ◽  
Rotor Speed ◽  
Turbine Engine ◽  
Fuel Delivery ◽  
Fine Control

The possibility of improving the control quality of the rotor speed of a gas turbine engine due to the introduction of a two-coordinate fuel metering unit is shown. The introduction of two controlled signals to the dosing needle and to the constant-differential valve will make it possible to constructively perform a "coarse" and "fine" control of the amount of fuel consumption while maintaining the specified accuracy with respect to the speed of rotation.

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