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• W4376606318 abstract "The Rotor Impeller Power System (RIPS) uses counter-rotating rotors in place of a parachute to provide power to a planetary atmospheric entry probe while also slowing the probe descent. Two rings of rotors blades with magnets turning around the exterior of a spherical or other solid shape drive current through coils on the interior without the need for hull penetrations. The power generated by such a system is limited by the size and strength of the blades, and the optimization of their angle of attack during descent of an increasingly dense atmosphere. The NASA Innovative Advance Concepts Phase I point study for RIPS is a Saturn descent probe modeled after the atmospheric probe of the Galileo mission, however, the technology is applicable to any solar system body with an atmosphere. Modern atmospheric probe's instrumentation advances mean a 1m3 spherical RIPS-powered probe could provide increased science output for the same payload mass, or equivalent science output from a smaller probe, or other advantages such as improved data transmission, or multiple smaller probes at multiple target locations for equivalent cost. Initial modeling of RIPS generation looked at power generated from descent of a Galileo-size descent probe over a descent from 100 mbar to 50+bar of Saturnian atmosphere over a period of hours, producing multiple kilowatts during this fall. Though we went into the greatest detail for a Saturn probe, we performed first order evaluations of power at the other giant planets as well. RIPS Power: The rotor-impeller power system has a specific energy nearly 20 times greater than batteries while generating up to 10 kW of continuous power through a multi- hour mission. The concept for a RIPS descent probe comprises two counter-rotating rings of blades generate power and slow descent. Since the power generation system to provides descent control, we compare the proposed solution to the energy provided and mass used by battery systems and parts of the descent module. Using blade element theory, we calculate the speed of descent for probes through the atmospheres of the four gas giant planets. From the speed, we calculate the mission time and generated energy when the probe falls to a depth corresponding to 50 bar. For the probes, we consider 8 blades with a length of 100 mm each and two different blade profiles. We model both a large (0.9 m diam) and small (0.5 m) two probe: •RIPS-L (large) probe of 0.9 m diameter and total rated power of 10 kW; it has a mass of 219 kg, and •RIPS-S (small) probe of 0.5 m diameter and a total rated power of3 kW; it has a mass of91 kg. Compared to Galileo at Jupiter, our RIPS designs provides up to 20x the specific energy and multiple kilowatts of continuous power for communications and scientific instruments. The small probe concept allows for the possibility of sending three probes with similar total mass as one Galileo probe to a target gas giant to provide a more distributed understanding of a single planet." @default.
• W4376606318 created "2023-05-17" @default.
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• W4376606318 date "2023-03-04" @default.
• W4376606318 modified "2023-09-23" @default.
• W4376606318 title "RIPS: Rotor/Impeller Power System" @default.
• W4376606318 doi "https://doi.org/10.1109/aero55745.2023.10115647" @default.
• W4376606318 hasPublicationYear "2023" @default.
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