ppt
... convergence and surface pressure falls Negative vorticity advection (NVA) found where air blows from regions of lower vorticity towards higher vorticity main mechanism to increase vorticity is convergence when there is NVA in upper levels, there tends to be downward motion below, surface diver ...
... convergence and surface pressure falls Negative vorticity advection (NVA) found where air blows from regions of lower vorticity towards higher vorticity main mechanism to increase vorticity is convergence when there is NVA in upper levels, there tends to be downward motion below, surface diver ...
APPLIED THERMODYNAMICS TUTORIAL 1 REVISION OF
... overall efficiency of the cycle may be optimised by the use of regenerative feed heating and steam re-heating. Regenerative feed heating is a way of raising the temperature of the feed water before it reaches the boiler. It does this by using internal heat transfer within the power cycle. Steam is b ...
... overall efficiency of the cycle may be optimised by the use of regenerative feed heating and steam re-heating. Regenerative feed heating is a way of raising the temperature of the feed water before it reaches the boiler. It does this by using internal heat transfer within the power cycle. Steam is b ...
Thermal Engineering - ME6404
... 68. The speed of a four stroke I.C. engine is 1500rpm. What will be the speed of the cam shaft? Ans: 750 rpm. 69. All the four operations in two stroke engine are performed in ________ number of revolution of crank shaft. Ans: one 70. All the four operations in four stroke engine are performed in _ ...
... 68. The speed of a four stroke I.C. engine is 1500rpm. What will be the speed of the cam shaft? Ans: 750 rpm. 69. All the four operations in two stroke engine are performed in ________ number of revolution of crank shaft. Ans: one 70. All the four operations in four stroke engine are performed in _ ...
Internal Combustion Engine: Atkinson Cycle
... This is also what gives it lower torque, as the force of the expansion stroke is lower for the longer expansion distance. The low torque, combined with the large and complicated cranking mechanism, made the Atkinson cycle less appealing than the Otto cycle, which is why the vast majority of modern ...
... This is also what gives it lower torque, as the force of the expansion stroke is lower for the longer expansion distance. The low torque, combined with the large and complicated cranking mechanism, made the Atkinson cycle less appealing than the Otto cycle, which is why the vast majority of modern ...
and (c )
... Notice that here we have a high ratio of the work of compression to that of expansion, which is typical in gas turbine systems. The key variable is the turbine inlet temperature, Tc, and this is to be made as large a possible. Tc is limited by the material and turbine blade cooling capability. ...
... Notice that here we have a high ratio of the work of compression to that of expansion, which is typical in gas turbine systems. The key variable is the turbine inlet temperature, Tc, and this is to be made as large a possible. Tc is limited by the material and turbine blade cooling capability. ...
Validating a Novel Theoretical Expression for Burn time and
... permits a more effective flight path. Therefore, there is a benefit to vehicle mass, flight performance, and cost in having a higher initial thrust during the boost phase of the flight, followed by a lower thrust (often 10% to 30% of the boost thrust) during the sustained phase of the powered flight ...
... permits a more effective flight path. Therefore, there is a benefit to vehicle mass, flight performance, and cost in having a higher initial thrust during the boost phase of the flight, followed by a lower thrust (often 10% to 30% of the boost thrust) during the sustained phase of the powered flight ...
Tristel for Surfaces brochure
... high-level disinfection of near-patient surfaces. Its innovative delivery system ensures that Tristel Duo is delivered safely, rapidly and at one effective concentration for each application. The application of Tristel Duo foam on a surface is visible. Similar to Tristel Jet Gel, Tristel Duo benefit ...
... high-level disinfection of near-patient surfaces. Its innovative delivery system ensures that Tristel Duo is delivered safely, rapidly and at one effective concentration for each application. The application of Tristel Duo foam on a surface is visible. Similar to Tristel Jet Gel, Tristel Duo benefit ...
Coupling refers to a movement at a joint that occurs in
... During thrust manipulation the pressure within the joint cavity decreases This leads to gases within the synovial fluid to pass into the joint cavity As the gas moves it creates a bubble It moves from an area of high pressure to low pressure Once the ‘bubble’ reaches the joint cavity the pressure eq ...
... During thrust manipulation the pressure within the joint cavity decreases This leads to gases within the synovial fluid to pass into the joint cavity As the gas moves it creates a bubble It moves from an area of high pressure to low pressure Once the ‘bubble’ reaches the joint cavity the pressure eq ...
HEFAT2014 10 International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
... temperature changes throughout the cycle is critical for accurate prediction of the thermal efficiency. It is observed in Figure 5 that, when compared to the conventional Brayton cycle at high pressure ratios, the pressure gain combustion cycle achieves 17 percent reduction in fuel consumption rate ...
... temperature changes throughout the cycle is critical for accurate prediction of the thermal efficiency. It is observed in Figure 5 that, when compared to the conventional Brayton cycle at high pressure ratios, the pressure gain combustion cycle achieves 17 percent reduction in fuel consumption rate ...
File
... tension but rather the flotation clearance will always be approximately the same as the air jet size. Most webs have some flutter in them entering the flotation section of a machine and having a web clearance of only 0.110 to 0.150" produces intermittent web touching on the metal nozzle surfaces. Be ...
... tension but rather the flotation clearance will always be approximately the same as the air jet size. Most webs have some flutter in them entering the flotation section of a machine and having a web clearance of only 0.110 to 0.150" produces intermittent web touching on the metal nozzle surfaces. Be ...
Electric Propulsion
... From the above chart, the limitation of staged chemical rocket motors with a maximum Isp of roughly 450 s is approximately 20,000 m/s with a initial-to-final mass ratio of 150 Included in the final mass fraction, mf, are the vehicle inert mass (structure, tanks, engine, residual fuel, etc.), as well ...
... From the above chart, the limitation of staged chemical rocket motors with a maximum Isp of roughly 450 s is approximately 20,000 m/s with a initial-to-final mass ratio of 150 Included in the final mass fraction, mf, are the vehicle inert mass (structure, tanks, engine, residual fuel, etc.), as well ...
Study of Swirl and Tumble Motion using CFD
... that they require energy to generate the vortex during suction stroke. This energy comes primarily from the kinetic energy of the gases entering the cylinder through the inlet valve. So to increase the swirl intensity, the gas velocities must be high at the inlet valve, thereby, requiring a smaller ...
... that they require energy to generate the vortex during suction stroke. This energy comes primarily from the kinetic energy of the gases entering the cylinder through the inlet valve. So to increase the swirl intensity, the gas velocities must be high at the inlet valve, thereby, requiring a smaller ...
lab module-4 - Portal UniMAP
... The apparatus consists of a chamber provided with perspex walls on two opposite faces. A floating vane fixing rod is provided over the chamber to which the vane is fixed. An initial balance weight is provided for balancing the mass of the vane. Another sliding weight is provided to balance the vane ...
... The apparatus consists of a chamber provided with perspex walls on two opposite faces. A floating vane fixing rod is provided over the chamber to which the vane is fixed. An initial balance weight is provided for balancing the mass of the vane. Another sliding weight is provided to balance the vane ...
Sonic Nozzles - Operating Principle
... The simplest flow system would use an inlet pressure regulator to control air pressure and a thermocouple to measure temperature. Adjusting the pressure regulator will change and maintain the flow through the Nozzle. Pressure differences within a piping system travel at the speed of sound and genera ...
... The simplest flow system would use an inlet pressure regulator to control air pressure and a thermocouple to measure temperature. Adjusting the pressure regulator will change and maintain the flow through the Nozzle. Pressure differences within a piping system travel at the speed of sound and genera ...
Experiment (3): Impact of jet
... Set up the apparatus on top of the hydraulics bench with the left hand support feet of the impact of jet apparatus located on the two left hand locating pegs of the hydraulics bench so that the apparatus straddles the weir channel. Connect the feed tube from the hydraulics bench to the boss on the r ...
... Set up the apparatus on top of the hydraulics bench with the left hand support feet of the impact of jet apparatus located on the two left hand locating pegs of the hydraulics bench so that the apparatus straddles the weir channel. Connect the feed tube from the hydraulics bench to the boss on the r ...
Propulsion systems
... ◦ Separate storage of fuel and oxidiser remote from combustion chamber ◦ Thus need propellant pump and feed system ◦ Chamber injector and mixer ◦ Igniter, combustion chamber and exit nozzle ...
... ◦ Separate storage of fuel and oxidiser remote from combustion chamber ◦ Thus need propellant pump and feed system ◦ Chamber injector and mixer ◦ Igniter, combustion chamber and exit nozzle ...
A Theory of Microwave Propulsion for Spacecraft
... A Theory of Microwave Propulsion for Spacecraft ...
... A Theory of Microwave Propulsion for Spacecraft ...
notes07
... In a gas turbine engine, atmospheric air is continuously drawn into a compressor where it is compressed to a high pressure. The air then enters a combustion chamber (or combustor) where it is mixed with fuel and combustion occurs resulting in combustion products at an elevated temperature. The combu ...
... In a gas turbine engine, atmospheric air is continuously drawn into a compressor where it is compressed to a high pressure. The air then enters a combustion chamber (or combustor) where it is mixed with fuel and combustion occurs resulting in combustion products at an elevated temperature. The combu ...
Thermodynamic Cycles of Reciprocating and Rotary Engines
... abbreviated form TDC and BDC respectively. The first stroke is an intake or filling of the cylinder by a fresh charge. In the case of the Otto engine it is a fuel-air mixture, and in the case of the Diesel engine it is air. In the beginning of this stroke the inlet valve 6 is open (outlet valve 7 is ...
... abbreviated form TDC and BDC respectively. The first stroke is an intake or filling of the cylinder by a fresh charge. In the case of the Otto engine it is a fuel-air mixture, and in the case of the Diesel engine it is air. In the beginning of this stroke the inlet valve 6 is open (outlet valve 7 is ...
FUNDAMENTALS OF GAS TURBINE ENGINES
... airflow. During design, every effort is made to keep the air flowing smoothly through the compressor to minimize airflow losses due to friction and turbulence. This task is a difficult one, since the air is forced to flow into ever-higher pressure zones. Air has the natural tendency to flow toward l ...
... airflow. During design, every effort is made to keep the air flowing smoothly through the compressor to minimize airflow losses due to friction and turbulence. This task is a difficult one, since the air is forced to flow into ever-higher pressure zones. Air has the natural tendency to flow toward l ...
PPTX - Florida Institute of Technology
... Space Vehicles Section 1: In-space systems Dr. S. Colafranceschi & Dr. M. Hohlmann Dept. of Physics & Space Sciences Florida Institute of Technology ...
... Space Vehicles Section 1: In-space systems Dr. S. Colafranceschi & Dr. M. Hohlmann Dept. of Physics & Space Sciences Florida Institute of Technology ...
Jet`s Scrapbook from Bortron 7
... come from Earth, but instead they come from a make-believe planet called Bortron 7. Bortron 7 is the 7th planet orbiting a make-believe red dwarf star called Bortron. Although Bortron 7 isn't a real place, scientists have evidence that some actual red dwarf stars have planets too. But a planet orbit ...
... come from Earth, but instead they come from a make-believe planet called Bortron 7. Bortron 7 is the 7th planet orbiting a make-believe red dwarf star called Bortron. Although Bortron 7 isn't a real place, scientists have evidence that some actual red dwarf stars have planets too. But a planet orbit ...
Recent experimental work on Mach effect thrusters
... • A Mach Effect Thruster [MET] is a solid state device that produces thrust without the irreversible ejection of propellant. • METs are not “free energy” devices. They require a power source to operate. • Power can be supplied, for orbital spacecraft, by solar arrays or onboard reactors. • Since MET ...
... • A Mach Effect Thruster [MET] is a solid state device that produces thrust without the irreversible ejection of propellant. • METs are not “free energy” devices. They require a power source to operate. • Power can be supplied, for orbital spacecraft, by solar arrays or onboard reactors. • Since MET ...
Jet engine
A jet engine is a reaction engine discharging a fast moving jet that generates thrust by jet propulsion in accordance with Newton's laws of motion. This broad definition of jet engines includes turbojets, turbofans, rockets, ramjets, and pulse jets. In general, jet engines are combustion engines but non-combusting forms also exist.In common parlance, the term jet engine loosely refers to an internal combustion airbreathing jet engine (a duct engine). These typically consist of an engine with a rotary (rotating) air compressor powered by a turbine (""Brayton cycle""), with the leftover power providing thrust via a propelling nozzle. Jet aircraft use these types of engines for long-distance travel. Early jet aircraft used turbojet engines which were relatively inefficient for subsonic flight. Modern subsonic jet aircraft usually use high-bypass turbofan engines. These engines offer high speed and greater fuel efficiency than piston and propeller aeroengines over long distances.