to allow the blades to begin rotation in low wind speed, heavier blades need higher wind speed to start them.
As light as possible ... consistent with strength.
r
Blades
The base tower, the blades, the turbine.
Light. It needs to be able to spin fast. Suppose you had a heavy blade, it would never spin. You might think it needs the extra weight to give it speed, but the wind turbines do not work off momentum, the work off the wind.
As light as possible ... consistent with strength.
r
Blades
round
Ideally, they should be constructed of light weight materials like reinforced aluminum
A wind machine with blades is so called a wind turbine, or a windmill.
no
The base tower, the blades, the turbine.
The number of blades in wind turbine is not determined by aesthetics but by science. The size, shape, solidarity, and positioning is determined by the weather conditions and power output. Current tubbiness include turbines using vortexes (no blades) and high solidarity turbines (12 blades) once popular on farms to pump water.If the model is a replica of actual turbine the number of blades in the model will be the same as the number in the actual unit.
Ideally, they should be constructed of light weight materials like reinforced aluminum
Not on any that I've ever seen. There usually is a light on top of the tower, though.
Wind turbine vary enormously in size from a small turbine on a boat with blades about two feet in diameter to large industrial 'wind farms' the blades of which are individually dozens of feet long