What is a GTM Navy?
Table of Contents
What is a GTM Navy?
Lesson Overview: The gas turbine engineering plant represents an innovative concept for shipboard power plants. US Naval vessels use aircraft derivative gas turbine engines for both main propulsion and ship’s service electrical power.
How does a gas turbine work?
As hot combustion gas expands through the turbine, it spins the rotating blades. The rotating blades perform a dual function: they drive the compressor to draw more pressurized air into the combustion section, and they spin a generator to produce electricity.
How does a gas turbine drive a ship?
Gas Turbine as a Ship’s Main Engine In gas turbine driven ships, the conventional gas turbine is combined with a power turbine which provides the power to the ships propeller. This system of ship propulsion is known as a “split-shaft gas turbine.”
How long is Navy gas turbine school?
Gas Turbine Systems Technician (Electrical) class “A” school is approximately 22 weeks long, and is located in Great Lakes, Illinois.
What does a GSM in the Navy do?
Gas Turbine System Technicians – Mechanical (GSM) operate and maintain mechanical components of gas turbine engines and propulsion systems. As a GSM, your responsibilities may include: Maintaining, operating and repairing gas turbine engines, generators and auxiliary equipment.
What fuel is used in a gas turbine?
natural gas
While gas turbines are often advertised as having fuel flexibility, about 90 percent of gas turbines worldwide operate on natural gas or liquefied natural gas (LNG) because of its purity and ease of combustion. Only about 400 GE gas turbines globally operate on crude, naphtha or heavy fuel oils.
What RPM do jet engines run at?
For example, large jet engines operate around 10,000–25,000 rpm, while micro turbines spin as fast as 500,000 rpm. Mechanically, gas turbines can be considerably less complex than internal combustion piston engines.
What fuel do gas turbine ships use?
The fuel is typically a clean, low viscosity petroleum oil. The air / fuel ratio, most likely being 60:1 (by weight), ignites to produce high pressure gas, slightly contaminated with products of combustion.
Why do ships use 2 stroke diesel engines?
More Cargo: Ship can carry more weight and hence more cargo with 2 stroke engines because of high power to weight ratio.
Is GSM a good job in the Navy?
The Navy (COOL) website claims that opportunities for placement in both the GSM rating and the GSE rating are excellent. The Navy also reports that advancement opportunities for GSMs are at or above average, while they rate advancement opportunities for GSEs “well above average” for sailors E7 and below.
Where do GSM in the Navy get stationed?
After you complete your training, you may be assigned to a fleet unit at sea or a shore station. In certain instances, you may receive temporary general duty assignments at sea while waiting for an advanced training assignment. The majority of your service as a GSM will be spent on ships at sea.
How long is a school for Navy GSM?
These sailors spend eight weeks in basic training at the Navy Recruit Training Command in Great Lakes, Illinois. There’s no Department of Defense security clearance required for this job, but normal color perception (no colorblindness) is required.
What is the LM2500 gas generator?
The basic LM2500 has a single shaft gas generator derived from the CF6, comprising a 16 stage compressor driven by a two stage air-cooled HP turbine. The combustion chamber is annular.
What are the different versions of the LM2500?
The LM2500 is available in 3 different versions: The LM2500 delivers 33,600 shp (25,100 kW) with a thermal efficiency of 37 percent at ISO conditions. When coupled with an electric generator, it delivers 24 MW of electricity at 60 Hz with a thermal efficiency of 36 percent at ISO conditions.
What are the performance and efficiency of the lm2500xpress +G4 DLE?
Modularity, reimagined LM2500XPRESS +G4 DLE LM2500XPRESS +G5 DLE LM2500 DLE LM2500 +G4 Net output (MW) 33.9 36.3 22.2 34.4 Net heat rate (Btu/kWh, LHV) 8861 8884 9920 9819 Net heat rate (kJ/kWh, LHV) 9348 9373 10466 10359 Net efficiency (%, LHV) 38.5% 38.4% 34.4% 34.8%
How long does it take to install the lm2500xpress?
For customers who need power in days, not weeks, the LM2500XPRESS can be installed in about 14 days by 20 people.
