Design and Performance of a Quad-Shrouded Rotor Micro Air Vehicle

This paper describes the experimental investigation of a quad-shrouded rotor micro air vehicle and focuses on the hover performance improvements over a conventional unshrouded micro quad rotor. The effects of number of rotor blades, blade root pitch angle, and shroud diffuser length on aerodynamic p...

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Published in:Journal of aircraft 2014-05, Vol.51 (3), p.779-791
Main Authors: Hrishikeshavan, Vikram, Black, James, Chopra, Inderjit
Format: Article
Language:English
Subjects:
Aerodynamics
Aerospace engineering
Aircraft
Asymmetry
Configuration management
Design engineering
Design optimization
Diameters
Diffusers
Drag
Efficiency
Embedded systems
Experiments
Micro air vehicles (MAV)
Performance enhancement
Pitch (inclination)
Pitch angle
Pitching moments
Retrofitting
Rotor blades
Rotors
Shrouds
Values
Vehicles
Weight
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cited_by cdi_FETCH-LOGICAL-a415t-367587e4b1227d28dadcc6d342765dd4f07aefa25ac6360e6268635196d26b273
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container_title Journal of aircraft
container_volume 51
creator Hrishikeshavan, Vikram
Black, James
Chopra, Inderjit
description This paper describes the experimental investigation of a quad-shrouded rotor micro air vehicle and focuses on the hover performance improvements over a conventional unshrouded micro quad rotor. The effects of number of rotor blades, blade root pitch angle, and shroud diffuser length on aerodynamic performance were studied. The rotor diameter was 6.6 cm, it had a tip Re of 20,000, and the gross weight of the vehicle was 90 g, with a shroud weight fraction of 13%. With the optimized design, the power loading of the quad-shrouded rotor was about 15% greater than the unshrouded configuration. To completely evaluate the configuration, the performance of the vehicle in edgewise flow was investigated. The drag and pitching moment for the shrouded rotor was about 2.5 times greater than the unshrouded vehicle. However, control-moment measurements suggested that the edgewise gust tolerance was at least 4  m/s. The vehicle prototype was also successfully flight tested in hover using onboard feedback regulation. Based on these studies, the shrouded rotor concept appears feasible in improving performance of a conventional micro quad rotor even at Re
doi_str_mv 10.2514/1.C032463
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source Alma/SFX Local Collection
subjects Aerodynamics
Aerospace engineering
Aircraft
Asymmetry
Configuration management
Design engineering
Design optimization
Diameters
Diffusers
Drag
Efficiency
Embedded systems
Experiments
Micro air vehicles (MAV)
Performance enhancement
Pitch (inclination)
Pitch angle
Pitching moments
Retrofitting
Rotor blades
Rotors
Shrouds
Values
Vehicles
Weight
title Design and Performance of a Quad-Shrouded Rotor Micro Air Vehicle
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