Mechanical Engineering

Average crew complement (depending on mission / deployment status) can be between 90 - 160, depending on the boat class. Standard for most boats is between 90-120 for normal operations.

For two Stroke Engine TVS50 is a Example and for Four Stroke Engine Pulsar, Apache are the examples......

Tensile yield point or yield strength

You must go to the barbers and ask for a fusey!

Q235 is a kind of material which is mostly used in China and for the pipes and tubes.

It seems that this material has a good quality for this purpose

Admit that you are having trouble controlling yourself.

receiving gauge is to receive the part/component as per fitment, orientation, & strength etc. for next assembly of the part.

Torque on a bolt places the bolt in Tension. The stresses are tensile stresses. There can also be torsional stress in the bolt, which is detrimental. That is minimized by lubricating the threads first, with anti-seize, thread locker (before cure), or surface treatment of the threads. In some cases, it is standard practice to back off nuts slightly after torquing to relieve the torsional stress.

16 gauge pipe is thicker than 19 gauge pipe.

Just one mm is all the difference there is.

In a boiler, pitting is dangerous because it weakens the boiler plate by reducing its thickness and strength. A pit that reduces the boiler plate thickness (at its weakest point) to 1/4 of the original thickness will fail at its Maximum Allowable Working Pressure. The weakest point is typically at the longitudinal joint (welded or riveted boilers) and pitting, grooving and cracking at this joint is closely monitored in all boilers.

A gauge manifold is a device used in refrigeration and air conditioning systems to measure and control pressure and temperature. It typically consists of multiple gauges and valves connected to a common manifold. Here are the main functions of a gauge manifold:

1. Pressure Measurement: The gauges on the manifold allow technicians to monitor the pressure levels of different sections of the system, such as high-side and low-side pressures. This helps in diagnosing and troubleshooting system issues.

2. Refrigerant Charging: The manifold provides valves that enable technicians to connect refrigerant cylinders and charge the system with the appropriate amount of refrigerant. The gauges help in determining the correct pressure levels during the charging process.

3. Pressure Regulation: The valves on the manifold allow technicians to regulate the pressure within the system. This is particularly useful during service and maintenance tasks, such as evacuating the system or performing leak checks.

4. Temperature Measurement: Some gauge manifolds may include temperature gauges, which provide information about the temperature of the refrigerant or specific components within the system. This helps in assessing system performance and identifying potential issues.

Overall, a gauge manifold is a crucial tool for HVAC/R technicians as it allows them to accurately measure, monitor, and control pressure and temperature parameters within a refrigeration or air conditioning system.

By : 1solutions.biz

The yield stress of tool steel is the amount of stress that a material can withstand without experiencing permanent deformation. The yield stress of a specific type of tool steel can vary depending on the specific composition and manufacturing process of the steel.

In general, tool steels have high yield stresses, typically in the range of 1000 to 2000 megapascals (MPa). This allows them to withstand high levels of stress and strain without deforming permanently.

For example, the yield stress of high-speed steel (HSS) can be in the range of 1500 to 2000 MPa, while the yield stress of cold-work tool steel can be in the range of 1200 to 1600 MPa.

Overall, the yield stress of tool steel is an important property that determines the material's ability to withstand high levels of stress and strain without deforming permanently.

A jumbo jet, also known as a wide-body airliner, typically has a length of between 208 feet (63.4 meters) and 262 feet (79.9 meters). The exact length of a jumbo jet can vary depending on the specific model and manufacturer.

Some examples of popular jumbo jets and their lengths include:

The Boeing 747 has a length of approximately 231 feet (70.6 meters) for the 747-100 model, and 250 feet (76.2 meters) for the 747-400 model.

The Airbus A380 has a length of approximately 238 feet (72.7 meters) for the A380-800 model.

The McDonnell Douglas MD-11 has a length of approximately 262 feet (79.9 meters) for the MD-11 model.

Overall, jumbo jets are typically very large aircraft with lengths ranging from around 208 feet to 262 feet.

First, a primer on what the effect of the MMC modifier is. Suppose the example shown below is applied to a pin:

The "M" symbol tells us that the given position tolerance of 0.5 applies if the pin is made at its maximum size of 11.8 mm. But if the pin is made at any size less than that, then the position tolerance gets a corresponding "bonus" tolerance. Thus, each part that is made gets its own customized geometric tolerance. (Example: a pin made at 11.5 gets a position tolerance of 0.8, and a pin made at the smallest size of 11.2 gets a position tolerance of 1.1 mm.) The advantage to this system is that some parts that are made will get more positional tolerance, while still ensuring that those pins will assemble with the mating parts.

With two-column tolerance stack calculations, then, we must be careful. Without the "M" symbol, we would simply add another line item in our stack to account for the 0.5 mm position error (which is actually 0.25 in each column). With the "M" symbol, that line should still be added, but then another line should also be included for the bonus portion. Then the key is to realize that sometimes the bonus amount is applied to both columns, and other times it only occurs in one column. Here is an example where the bonus is in both columns, because the pin's size is not a factor; the stack is directed to the axis of the pin:

If the stack were leading to the edge of the pin, then the size of the pin gets factored into the stack, and one column would have zero and the other would get the 0.3 bonus.

ummmmmmmmmmmmmmmmmmm actually you have to buy a new drive belt as the belt is conected to other things and so yea that's it

Above is correct. The first thing is to contact manufacturer's parts dept and order replacement belt.

If the manufacturer is no longer in business or you player is to old to get OEM parts, Google for drive belts. Measure the belt and try a dealer in phonograph turntable belts.There can be as many as three different belts, so since you are going to have the unit apart, check other belts and replace any worn or loose ones. Take notes during disassembly. Describe screws and where they came out of.

Remove case cover screws and case cover. On a carousel changer you may have to remove carousel to get to the belt drive.

On my Carver changer, I also had to remove the front of the unit. You will probably have to remove several screws to get belt over axel shaft of pulley. After you have belt on, turn on power to see if carousel turns.

Since you have the case off, clean the laser lens with alcohol and photo lens cleaning tissue. You can get by using a cotton swab (Q-tip), but you risk leaving behind tiny whisps of cotton. It is also a good idea to clean out any visible dust with damp paper towel.

I did this without service manual, but if you can buy or download one, by all means get it.

If all goes well, replace carousel and test before putting case cover back on.

When we are using the tig welder we getting welding defects on our blanks, but when using the plasma weld no defects are found

A clamp or vice that uses pneumatic power to close and hold pressure upon a part. Pneumatic means air. In this context compressed air.

Specifications (F-5E Tiger II) Data from Quest for Performance[20] General characteristics * Crew: 1 * Length: 47 ft 4¾ in (14.45 m) * Wingspan: 26 ft 8 in (8.13 m) * Height: 13 ft 4½ in (4.08 m) * Wing area: 186 ft² (17.28 m²) * Airfoil: NACA 65A004.8 root, NACA 64A004.8 tip * Empty weight: 9,558 lb (4,349 kg) * Max takeoff weight: 24,664 lb (11,187 kg) * Powerplant: 2× General Electric J85-GE-21B turbojet ** Dry thrust: 3,500 lbf (15.5 kN) each ** Thrust with afterburner: 5,000 lbf (22.2 kN) each * *Zero-lift drag coefficient: 0.0200 * Drag area: 3.4 ft² (0.32 m²) * Aspect ratio: 3.86 * Internal fuel: 677 US gal (2,563 L) * External fuel: 275 US gal (1,040 L) per tank in up to 3 tanks Performance * Maximum speed: 917 kn (1,060 mph, 1,700 km/h, mach 1.6) * Range: 760 nmi (870 mi, 1,405 km) * Ferry range: 2,010 nmi (2,310 mi, 3,700 km[21]) * Service ceiling: 51,800 ft (15,800 m) * Rate of climb: 34,400 ft/min (175 m/s) * Lift-to-drag ratio: 10.0 from the T-38 Wikipedia page (varient of the F-5)Performance* Maximum speed: Mach 1.3 (858 mph, 1,381 km/h) * Range: 1,140 mi (1,835 km) * Service ceiling: 50,000 ft (15,240 m) * Rate of climb: 33,600 ft/min (170.7 m/s) * Wing loading: 70 lb/ft² (340 kg/m²) * Thrust/weight:0.65 Specifications (F-5E Tiger II) Data from Quest for Performance[20] General characteristics * Crew: 1 * Length: 47 ft 4¾ in (14.45 m) * Wingspan: 26 ft 8 in (8.13 m) * Height: 13 ft 4½ in (4.08 m) * Wing area: 186 ft² (17.28 m²) * Airfoil: NACA 65A004.8 root, NACA 64A004.8 tip * Empty weight: 9,558 lb (4,349 kg) * Max takeoff weight: 24,664 lb (11,187 kg) * Powerplant: 2× General Electric J85-GE-21B turbojet ** Dry thrust: 3,500 lbf (15.5 kN) each ** Thrust with afterburner: 5,000 lbf (22.2 kN) each * *Zero-lift drag coefficient: 0.0200 * Drag area: 3.4 ft² (0.32 m²) * Aspect ratio: 3.86 * Internal fuel: 677 US gal (2,563 L) * External fuel: 275 US gal (1,040 L) per tank in up to 3 tanks Performance * Maximum speed: 917 kn (1,060 mph, 1,700 km/h, mach 1.6) * Range: 760 nmi (870 mi, 1,405 km) * Ferry range: 2,010 nmi (2,310 mi, 3,700 km[21]) * Service ceiling: 51,800 ft (15,800 m) * Rate of climb: 34,400 ft/min (175 m/s) * Lift-to-drag ratio: 10.0 from the T-38 Wikipedia page (varient of the F-5)Performance* Maximum speed: Mach 1.3 (858 mph, 1,381 km/h) * Range: 1,140 mi (1,835 km) * Service ceiling: 50,000 ft (15,240 m) * Rate of climb: 33,600 ft/min (170.7 m/s) * Wing loading: 70 lb/ft² (340 kg/m²) * Thrust/weight:0.65

The proportional integral and derivative control system or PID control system consists of proportionsl, derivative and integral elements which gives a very efficient process control.

below some about 25% (or maybe 50% depending on the model) of their full rated capacity, or else condensation can occur in the exhaust system.

That causes corrosion and a shortening of lifetime or at least increased maintenance cost.

The minimum load ratio has no direct effect on the operating hours of the generator, it is simply a constraint on how low the generator power output can go. But raising the minimum load ratio could indirectly lead to fewer operating hours because the generator is more productive when it runs.

Buses and lorries are so heavy that it's starting to become difficult and expensive to have the steering wheels also work as drive wheels, so they usually settle for only having the simpler rear axle as drive wheels.

A recirculation line in a boiler feed pump is used to return part of the pumped water back to the inlet of the pump. This helps to prevent cavitation and maintain a steady flow of water through the pump.

Cavitation is a phenomenon that can occur in pumps when the pressure of the water being pumped drops below the vapor pressure of the water. When this happens, bubbles of vapor can form in the pump, which can cause damage to the pump and reduce its efficiency.

The recirculation line helps to prevent cavitation by returning part of the water that has been pumped back to the inlet of the pump. This increases the pressure of the water at the inlet, which helps to prevent the formation of vapor bubbles. As a result, the pump can operate more efficiently and reliably.

Overall, the use of a recirculation line in a boiler feed pump helps to prevent cavitation and maintain a steady flow of water through the pump. This can improve the performance and reliability of the pump.

a brother called lincoln and pati