抄録
The study examined many problems such as efficiency improvement or the safety noise of a windmill for small vertical axis model wind-generated electricity to be called" a Cygnus Mill". The quantity of generation increases as I raise number of revolutions, but there is a threat that I have bad influence such as a fall of the safety or the increase of the noise. Therefore I examined a condition to improve performance and efficiency without raising number of revolutions. I changed a wing-shaped installation angle in one's study in various ways and measured it and tested it. As a result, I added an installation angle and understood that a change had an influence on quantity of generation and efficiency to a minus. (1) As an attack angle rises to a minus, the circumferential speed ratios decrease. (2) As an attack angle rises in a plus, the circumferential speed ratios increase. (3) In the case of wingspread 1,000mm, an attack angle degree understood that time of 32 degrees was quantity of greatest generation. (4) In the case of wingspread 1,500mm, an attack angle degree understood that time of 35 degrees was quantity of greatest generation.
