A predesign study was conducted to evaluate the feasibility of providing a modern four bladed rotor for flight research testing on NASA's Rotor System Aircraft. The objectives of the proposed tests are to acquire data (for correlation purposes) on the capabilities of a state of the art rotor system and to quantify the contributions of key design parameters to these capabilities. Three candidate rotors were examined: the UH-60A BLACK HAWK rotor with and without root extenders and the H-3 Composite Blade rotor. It was concluded that the technical/cost objectives could best be accomplished using the basic BLACK HAWK rotor (i.e., without root extenders). Further, the availability of three existing sets of blade tip of varying design, together with a demonstrated capability for altering airfoil geometry should provide early research information on important design variables at reduced cost. For planning purpose it is estimated that the proposed rotor system could be available for testing in 24 months after authorization to proceed for a cost of $6.098 million.
Predesign Study for a Modern 4-Bladed Rotor for the RSRA
1981
177 pages
Report
No indication
English