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erm i don't know liak sorry.

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Q: How do you calculate bending stress on an antenna mast?
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What is the differeance between upwind and downwind turbines?

An Upwind turbine faces into the wind with the turbine blades in front of the Nacelle* while a Downwind turbine has blades to the rear of the Nacelle and faces away from the wind. Up-wind turbines are by far and away the most common, but down-wind turbines (usually two-bladed) are also used in certain situations.In very strong winds the turbine blades of a wind turbine generator flex under enormous forces. With a down-wind turbine the blades flex AWAY from the mast which prevents them from crashing into it. Up-wind turbines need to be designed so that the blades are positioned at a good distance from the mast, and they must also be engineered to be inflexible (which costs more money). In addition, when the blades of a down-wind turbine bend it reduces the stresses on the mast as wind energy is lost in bending the blades. Finally, down-wind turbines do not need a tail (or motorised yaw mechanism) to align them with wind as the turbine blades perform this task (although this can also be a serious disadvantage in large down-wind turbines if wires carrying huge currents are getting twisted).Down-wind turbines on the other hand are generally noisier (additional aerodynamic noise), and the blades are subject to more forces than those of up-wind turbines. Another serious disadvantage of a down-wind turbine is wind shadow behind the mast causing a drop in power each time a blade passed behind the mast.*Nacelle = is located at the top of the mast and contains the rotor and generator, and sometimes a gearbox. Basically it is everything except the turbine blades, tail, and mast.


What is radial drilling machine?

a machine in which the drilling head is mounted to slide along a radial arm which can be rotated, raised, or lowered on a vertical mast to adjust the position of the drill above the workpiece Often shortened to radial.


What is Turbine cold start up?

cold start up of a steam turbine has to be done after a rather long period of shut down - when turbine case and chest temperature are fallen down dramatically. turbine constructor heating ramps mast be followed in order to avoid thermal stresses on the metal of turbine case , valve case and rotor to avoid also height differential expansion between rotor and case that could lead to contact between case and rotor because of the different thermal inertia of the two parts.when the heating is complited the turbine can be started checking closely the differntial expansion recorders.when at speed the unit can be sincronyzed (usually at 3000 rpm) and then loaded according to the related load ramp.(megawatts\ minute)


How do turbines work?

A simple turbine.Air is drawn into the engine continuously and compressed by a series of rotating blades. Fuel is sprayed into the combustion chamber and burnt increasing the gas temperature to around 1200C.The hot high pressure gas expands through a second set of blades mounted on the same shaft as the compressor blades. The energy of the gas is partially expended powering the compressor, but has a residual energy which is either expended as a hot jet (resulting in thrust) or which drives a further independent set of blades to power a propeller or other device.see http://www.rolls-royce.com/education/schools/how_things_work/journey02/index.html


Related questions

Where can one purchase an antenna mast?

You can purchase an antenna mast at most auto shops like Auto Parts or Auto Zone. Many gas stations or garages will also carry the antenna mast for your car.


Where is the antenna mast assembly located?

remove inner fender passenger side antenna mast is right there back towards door you can get a new antenna for about 56 dollars


How do you remove powered antenna mast from Mitsubishi Eclipse?

I removed the entire power antenna assembly and could not find any way possible to separate the mast from the motor assembly. Odd, since Mitsubishi sold me an antenna mast.


How do you replace power antenna mast?

how do I replace a power antenna on my jeep Cherokee 1992


How do you get an outdoor antenna to stand up?

By mounting it on an antenna mast with the appropriate attachment bracket.


What length of antenna?

unlimited most radio supply outfits will provide an antenna mast to 78 inches, but you can get your machine shop to make a longer mast for a few $$$ extra


How do you replace the radio antenna on a 2003 Elantra?

You can get a new mast for the antenna from any Hyundai dealer. This happens a lot and they usually stock them. If you can get all of the old mast out, it's a rather simple procedure, although it can be tricky to get the antenna to grab the new mast. 1. Remove the nut holding the mast into the antenna (12mm I think). 2. Turn the radio on and pull the antenna mast out. There should be a round disc and a ball on the bottom. If not, you'll need to remove the antenna assembly and take the rest of the pieces out of the antenna. If the disc and ball are present, continue with step 3. 3. Push the plastic of the new antenna mast down into the antenna as far as possible. 4. Have an assistant turn off the radio while you're pushing the plastic into the antenna. 5. If the antenna does not grab onto the mast, return to step 2. Otherwise, continue with step 6. 6. Install and tighten the mast nut. 7. Turn the radio on. 8. Turn the radio off. Your mast should now be properly seated. 9.there is a plastic washer also inside that you will have to force the mast thru to get it the set in the motor ! if you cann't push thru , next step take out motor and remove the tube for antenna, you find in sitting inside make sure connect it back the same it is stting , after that replace in car, have someone turn and off radio,job done


What is a radar mast?

A radar mast is a high platform to mount a radar antenna such as the radar has an unobstructed view.


Can you replace power antenna on 99 4 runner without replacing it with a power antenna?

There are a lot of aftermarket antenna masts that you can get to fit your 4 runner and if you do decide to go with a fixed mast just make sure that you make sure that the wiring harness at the mast doesn't ground out on any metal. Other than that there is no problem with replacing it with a fixed mast antenna.


Antenna motor on 1990 caprice classic still running with car off why?

The antenna mast is stripped.


How do you Replace the antenna mast on a Volvo s70?

Begin by removing the wiring harness from your Volvo antenna. Remove the antenna retaining nuts. The antenna will come off. Reverse the process to install your new antenna.


How do you replace a 1996 infinity I30 antenna mast?

Begin by removing the wiring harness from the bottom of your antenna. Remove the antenna retaining nuts. Reverse the process to install your new antenna.