A Method for Determining the Conversion Factors to Convert Gas Turbine Engine Parameters to Normal Values Based on Test Results in a Thermal Pressure Chamber

2019 ◽  
pp. 36-48
Author(s):  
V.A. Grigoriev ◽  
D.S. Kalabukhov
Keyword(s):  
Gas Turbine ◽  
Normal Values ◽  
Gas Turbine Engine ◽  
Pressure Chamber ◽  
Test Results ◽  
Ambient Conditions ◽  
Thermal Pressure ◽  
Output Data ◽  
Conversion Factors ◽  
Turbine Engine

The article presents a method for determining the normalizing coefficients of recalculation of the main technical parameters of a gas turbine engine when undergoing production testing. The method is based on the application of methods for planning a design experiment. The mathematical models of the output data of the engine, necessary for carrying out such an experiment, were obtained by means of static processing of the protocols of the previous tests that contained the results of direct measurements of the parameters in a thermal pressure chamber. The ambient conditions (atmospheric pressure and temperature) and the operating parameters (rotational frequency and effective power of the engine) were selected as variable factors of the experimental design. Depending on these factors, the normal values of the parameters and the normalizing conversion factors for fuel consumption, air consumption, gas temperatures in the flow part of the engine and other output data were determined analytically. The method was demonstrated by processing test results of the 9I56 engine.

ABS NVR Type Approval of the Rolls-Royce Naval Marine Model MT5S Gas Turbine Engine and the RR4500 Generator Set

2014 ◽  
Author(s):  
Peter Lahm ◽  
Jack Halsey
Keyword(s):  
Gas Turbine ◽  
Gas Turbine Engine ◽  
Lessons Learned ◽  
Test Results ◽  
Approval Process ◽  
Naval Vessel ◽  
Design Assessment ◽  
Turbine Engine ◽  
Type Approval ◽  
Type Approval Testing

This treatise examines the activities required to Type Approve the MT5S gas turbine engine and RR4500 generator set to the American Bureau of Shipping Naval Vessel Rules (ABS NVR). Detailed accounts of the various phases of the approval process and challenges encountered therein are presented. The methods utilized to achieve ABS design assessment and the process of Type Approval testing is presented. Design assessment and Type Approval test results are summarized. A discourse containing lessons learned and corrective measures for future Type Approval efforts is included.

Development of the Garrett GTPF990: A 5000-Horsepower Marine and Industrial Gas Turbine Engine

1978 ◽  
Author(s):  
E. L. Wheeler
Keyword(s):  
Gas Turbine ◽  
Aircraft Engine ◽  
Gas Turbine Engine ◽  
Status Report ◽  
Test Results ◽  
Turbine Engine ◽  
Endurance Testing ◽  
Qualification Testing ◽  
Industrial Gas Turbine ◽  
Engine Development

The Garrett GTPF990 gas turbine engine is being developed under a U.S. Navy contract to fulfill both propulsion and generator drive repuirements. This is a unique second-generation marine engine that is not derived from an aircraft engine counterpart. The engine development is nearing completion, endurance testing has started, and all other qualification testing has been conducted. This paper is a development status report. A description of the engine and special maintenance features is presented. Emphasis is placed on qualification test results, development test experience, and the resulting design improvements.

Analysis of Using the M-Cycle Regenerative-Humidification Process on a Gas Turbine

2014 ◽  
Author(s):  
P. E. Jenkins ◽  
M. Cerza ◽  
Mohammad M. Al Saaid
Keyword(s):  
Gas Turbine ◽  
System Performance ◽  
Gas Turbine Engine ◽  
Brayton Cycle ◽  
Test Results ◽  
Turbine Engine ◽  
Performance Curves ◽  
Air Cooler ◽  
Net Power Output ◽  
Turbine Exhaust

This investigation focused on the analysis of using the Maisotsenko Cycle (M-Cycle) to improve the efficiency of a gas turbine engine. By combining the Maisotsenko Cycle (M-Cycle) with an open Brayton cycle, a new cycle, is known as the Maisotsenko Combustion Turbine Cycle (MCTC), was formed. The MCTC used an Indirect Evaporative Air Cooler as a saturator with a gas turbine engine. The saturator was applied on the side of the turbine exhaust (M-Cycle#2) in the analysis. The analysis included calculations and the development of an Engineering Equation Solver (EES) code to model the MCTC system performance. The resulting performance curves were graphed to show the effects of several parameters on the thermal efficiency and net power output of the gas turbine engine. The models were also compared with actual experimental test results from a gas turbine engine. Conclusions and discussions of results are also given.

Cold Flow Turbine Rig Tests of the Original and Redesigned Compressor Turbines of an Industrial Gas Turbine Engine

1989 ◽  
Vol 111 (2) ◽  
pp. 146-152
Author(s):  
I. S. Diakunchak
Keyword(s):  
Gas Turbine ◽  
Gas Turbine Engine ◽  
Advanced Technology ◽  
Test Facility ◽  
Test Results ◽  
Original Design ◽  
Turbine Engine ◽  
Cold Flow ◽  
Industrial Gas Turbine ◽  
Stage Efficiency

This paper describes the results of cold flow turbine rig tests carried out on the original and redesigned compressor turbines of an industrial gas turbine engine. Some details of the aerodynamic design of the latest variant, a brief description of the advanced technology design methods used in this design, and a description of the test facility are included. Bulk stage performance and detail rotor exit radial-circumferential traverse results are presented. These test results demonstrate that the design point stage efficiency of the redesigned compressor turbine is about six percentage points higher than that of the original design.

scholarly journals Electron beam welding of medium-pressure chamber of gas turbine engine

2015 ◽  
Vol 2015 (12) ◽  
pp. 29-33 ◽  
Author(s):  
V.M. Nesterenkov ◽  
◽  
L.A. Kravchuk ◽  
Yu.A. Arkhangelsky ◽  
I.A. Petrik ◽  
...  
Keyword(s):  
Electron Beam ◽  
Gas Turbine ◽  
Electron Beam Welding ◽  
Gas Turbine Engine ◽  
Pressure Chamber ◽  
Turbine Engine ◽  
Medium Pressure

Demonstration of a Semi-Closed Cycle, Turboshaft Gas Turbine Engine

2000 ◽  
Author(s):  
Peter L. Meitner ◽  
Anthony L. Laganelli ◽  
Paul F. Senick ◽  
William E. Lear
Keyword(s):  
High Pressure ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Pressure Ratio ◽  
Gas Turbine Engine ◽  
Exhaust Gas ◽  
Test Results ◽  
Closed Cycle ◽  
Turbine Engine ◽  
The Impact

A semi-closed cycle, turboshaft gas turbine engine was assembled and tested under a cooperative program funded by the NASA Glenn Research Center with support from the U.S. Army. The engine, called HPRTE (High Pressure, Recuperated Turbine Engine), features two distinct cycles operating in parallel; an “inner,” high pressure, recuperated cycle, in which exhaust gas is recirculated, and an “open” through-flow cycle. Recuperation is performed in the “inner,” high pressure loop, which greatly reduces the size of the heat exchanger. An intercooler is used to cool both the recirculated exhaust gas and the fresh inlet air. Because a large portion of the exhaust gas is recirculated, significantly less inlet air is required to produce a desired horsepower level. This reduces the engine inlet and exhaust flows to less than half that required for conventional, open cycle, recuperated gas turbines of equal power. In addition, the reburning of the exhaust gas reduces exhaust pollutants. A two-shaft engine was assembled from existing components to demonstrate concept feasibility. The engine did not represent an optimized system, since most components were oversized, and the overall pressure ratio was much lower than optimum. New cycle analysis codes were developed that are capable of accounting for recirculating exhaust flow. Code predictions agreed with test results. Analyses for a fully developed engine predict almost constant specific fuel consumption over a broad power range. Test results showed significant emissions reductions. This document is the first in a series of papers that arc planned to be presented on semi-closed cycle characteristics, issues, and applications, addressing the impact of recirculating exhaust flow on combustion and engine components.

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