IGF::OT::IGF THIS CONTRACT IS A RESULT OF A DOWNSELECT FROM AWARDS ISSUED AS A RESULT OF NNH15ZDA001N-S3GSI…

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IGF::OT::IGF THIS CONTRACT IS A RESULT OF A DOWNSELECT FROM AWARDS ISSUED AS A RESULT OF NNH15ZDA001N-S3GSI. A SUMMARY OF THE RESEARCH IS AS FOLLOWS: FUTURE ROBOTIC MISSIONS TO VENUS REQUIRE ACTUATORS FOR POWERING ROBOTIC ARMS, SAMPLING SYSTEMS, AND GIMBALS FOR THE POSITIONING OF CAMERAS AND ANTENNAS. THERE ARE MANY TYPES OF ACTUATORS (E.G. PNEUMATIC, HYDRAULIC); HOWEVER ELECTRIC ACTUATORS OFFER THE GREATEST VERSATILITY FOR SPACE MISSIONS. AN ELECTRIC ACTUATOR CONSISTS OF AN ELECTRIC MOTOR AND A POSITION SENSOR. THE ELECTRIC MOTOR CONVERTS ELECTRICAL ENERGY (ELECTRICITY) INTO MECHANICAL OUTPUT (SHAFT ROTATION). THE POSITION SENSOR, ON THE OTHER HAND, DETERMINES THE ANGULAR POSITION OF THE MOTOR SHAFT, WHICH THEN IS PROCESSED BY DRIVE ELECTRONICS TO COMMUTATE AND CONTROL THE MOTOR. BECAUSE OF THE EXTREME CONDITIONS ON THE VENUS SURFACE (92 BAR PRESSURE, 462 C TEMPERATURE, AND SUPERCRITICAL CO2 ATMOSPHERE), CONVENTIONAL ACTUATORS WILL NOT BE ABLE TO FUNCTION PROPERLY, OR AT ALL. THE MAIN CHALLENGES PERTAIN TO CHANGES IN ELECTRICAL PROPERTIES LIKE AN INCREASE IN WIRE RESISTANCE (LEADING TO GREATER LOSSES), CHANGES IN MAGNETIC PROPERTIES LIKE PERMEABILITY AND RETENTIVITY (LEADING TO DEMAGNETIZATION OF MAGNETS), AND CHANGES IN PHYSICAL PROPERTIES SUCH AS LINEAR EXPANSION, DECREASE IN STRENGTH, INCREASE IN FRICTION, AND ACCELERATED OXIDATION. HONEYBEE HAS DEVELOPED A 48V BRUSHLESS DC MOTOR (BLDC) AND CUSTOM POSITION SENSOR CALLED THE PULSED INJECTION POSITION SENSOR (PIPS) FOR MOTOR COMMUTATION AND FEEDBACK CONTROL. THE MOTOR AND PIPS ARE AT TECHNOLOGY READINESS LEVEL (TRL) 5. THE MAIN OBJECTIVE OF THE PROPOSED WORK IS TO MATURE THE VENUS ACTUATOR TECHNOLOGY THROUGH AN ITERATIVE PROCESS OF VENUS CHAMBER TESTING OF A TRL5 ACTUATOR, FOLLOWED BY RE-DESIGN AND FABRICATION OF A TRL6 ACTUATOR AND SUBSEQUENT VENUS CHAMBER QUALIFICATION TESTING OF THAT ACTUATOR. THE CRITICAL OBJECTIVES TO BE MET ARE AS FOLLOWS: 1. DESIGN OF A MOTOR WITH 28V WINDINGS, 2. INCREASE PIPS RESOLUTION (THIS WILL MAKE MOTOR MORE EFFICIENT AND ALLOW ACTUATOR TO BE USED FOR PRECISION POSITIONING SYSTEMS ROBOTIC ARMS AND GIMBALS), 3. ESTABLISH REPRODUCIBLE PROCEDURES, STANDARDS, AND GUIDELINES FOR FABRICATING, ASSEMBLY, TEST, AND INSPECTION OF VENUS ACTUATORS (CURRENTLY ACTUATORS ARE HAND CRAFTED BY SELECTED ENGINEERS THIS KNOWLEDGE NEEDS TO BE CAPTURED SO THAT ANY SKILLED PERSON WILL BE ABLE TO FABRICATE VENUS ACTUATOR WHENEVER NEEDED). THIS EFFORT WILL BE ACHIEVED IN ONE YEAR PERIOD TO ENABLE TECHNOLOGY INFUSION INTO THE NEW FRONTIERS (NF) VENUS IN SITU EXPLORER (VISE) MISSION.