Document MJqr9942JMYX5JoD3Qega89oj

American Society of Heating and Ventilating Engineers Guide, 1932 Chapter 34--Fans and Motive Power Fig. 4. Operating Characteristics of a Fan with Blades Curved Forward ffserfs*rcj Cfyoe+rrf&y %>rf3t/ocAV<rf7 7 ^ 7 * Fig. 3. Operating Characteristics of : a Fan with Straight Blades 486 Fig. 5. Operating Characteristics; of a. Fan with a Double Curved Blade: , 487