Abstract
Performances of the compressor type cascade of blades with small aspect ratio AR were experimentally obtained at the center of blade span. All blades had same span of 50mm and their aspect ratio were 2.08, 1.39, 1.04 and 0.83. Stagger angle (α) was changed from 0° to 60° and attack angle (αi) from 0° to 15°. Results indicate that total pressure loss coefficient takes a minimum value at AR_??_1 irresspectively of α and αi. At αi over about 5° turning angle (ε) increases and at αi=0° it decreases gradually with increasing AR. Axial velocity ratio, in the case α=0°, decreases gradually with incresing AR, and in the case α=30° it keeps almost constant value irrespectively of AR at αi=constant, but in cases α=50° and 60° it increases at αi≥5-10° with increasing AR.
