0
- Fan
- Dragon fly
- Helicopter
Wiki User
∙ 6y ago
Add your answer:
Earn +20 pts
How does a Ljungstrom steam turbine work and look like?
Ljungstrom Turbine is a Radial Outflow Steam Turbine with two counter rotating discs. Blades are mounted in circles one bigger than the other. Blades of one rotor work as nozzles for the other rotor blades. This turbine design is very forgiving on wet steam. It is said that the turbine design had limitations on scaling up above 30 MW and hence could not compete with Axial Flow Turbines.
What do the rotor blades of a wind turbine look like?
Log onto "google" click on "images" at the top of the screen "type in "windmill" then send.
Why there is no use of saltwater to produce electricity?
in hydroelectric generation system.you use a turbine which have many blades like wings,water comes from the nozzels to the blades and blades are made by an mettalic material,if you use the salted water there will be more rusting.
What part of a wind turbine provides motion to convert into electricity?
The blades. Wind passes over the blades creating lift (just like an aircraft wing) which causes the rotor to turn and the wind power to convert to electricity.
How the water turbine blades from hydro power?
when water passes thru a dam, it turns the turbine blades, the turbine blades turn a huge metal rod like stick and the rod turns and powers an generator.
What is the shape of a helicopters wings?
The helicopter main rotor blades have an airfoil shape like an airplanes wing. The entire blade can also be angled by the pilot,through the rotor head. This angle makes it fly or lift.
What do the blades of a wind turbine look like?
They look like propellers, or fans.
Why fixed wing aircraft need less power-full engine to fly then a helicopter?
Possibly...because the wings add lift to the aircraft; whereas the chopper has no wings and must create it's own lift. Helicopter crewmen call helicopters "rotor-wing" aircraft, apparently the rotor blades on the choppers act like "wings."
What is helicopter rotor and propeller?
The rotor is like the engine to the propeller. A propeller is the fan like blades on the top that spin to make the helicopter fly.
What device has fanlike blades that converts energy from various sources to electrical energy?
Sounds like a turbine to me.
How a helicopter used of thrust for flying?
The main rotor of a helicopter is actually a set of wings that turn. They produce lift, just like the wings of an airplane. To change direction, the rotor is tilted, and the helicopter is PULLED in that direction.
How does a helicopter fly?
A helicopter is able to fly because of the lifting effect of its main rotor. The rotor blades of a helicopter act in the same manner as the wings of a plane, creating lift by forcing air above and below a curved airfoil. The air moves faster over the top of the blade, reducing the pressure there. The air below pushes upward with greater pressure, lifting the rotor and the attached frame and cabin. At the same time, the blades can be angled in any direction, allowing it to move in any direction by using the blades like the propellers on an airplane. Jet helicopters also generate some forward speed from their turbine exhaust. The main rotor is the set of blades on the top of the craft, driven by the engine (piston, jet turbine, etc.). By turning the blades, which are airfoils and like a narrow "wing" in shape, we move them through the air. And by "tipping" the leading edge of the blade up (increasing the pitch) as it moves, the blade will have a positive angle of attack. It will bite into the air and force that air down. This forces the blades up, and the rotor will provide lift. Lift causes the craft to defy gravity. The torque (rotational motion) of a single rotor blade will have to be offset, and the tail rotor does this. Additionally, the tail rotor (or air turbine in the NOTAR helicopter) will also allow the craft to be turned and "pointed" in another direction. The pedals control the tail rotor or air turbine. By pushing the stick to the side (and adding a bit more pitch with the cyclic), the blades can be controlled to allow a bit more lift on one side to tip or bank the chopper and turn it. (A bit more pitch is added to offset the slight loss of lift.) The pedals will also be used in conjunction with the stick. By pushing the stick left, the blades will have a bit more pitch as they come around on the right side and a bit less as they come around on the left side. This will bank and turn the helicopter. Pushing the stick forward causes more pitch to the blades as they come around the back of the circle they make around the craft. This lifts the back of the craft. And it will make for a bit less pitch in the front for a bit less lift in front. This tips the craft forward. Often when we see a helicopter take off, it rises a bit, tips forward (now that the rotors will clear the ground), and accelerates forward as it continues to rise. The pilot has pulled up on the collective (to increase the pitch of the main rotor blades). That provided lift. He also has to push forward on the cyclic to tip the helicopter forward to begin to gather forward airspeed. (for more information see the related links below) A helicopter can take off and land vertically (straight up and down). It can fly in any direction, even sideways and backwards. It can also hover or hang in the air above a given place. A helicopter gets its power from rotors or blades. When its rotors are spinning, a helicopter doesn't look much like an airplane. But the rotor blades have an airfoil shape like the wings of an airplane. So as the rotors turn, air flows more quickly over the tops of the blades than it does below. This creates enough lift for flight. Additionally, helicopters avoid areas close to storms. The reason is that the helicopter requires a careful balance of the air supporting it. Downdrafts or turbulent winds can drastically affect control of the helicopter.
