An aero-structural algorithm to reduce the energy consumption of a propeller-driven aircraft is developed through propeller design method coupled with Particle Swarm Optimization (PSO). A wide range parameters considered in optimization, including geometry airfoil at each section. The performance prediction tool employs convergence improved Blade Element Momentum Theory fed by aerodynamic chara...

The behavior of small-scale propellers operating in vertical descent and through the vortex ring state (VRS) was measured. In particular, a total of 26 propellers with diameters ranging from 9 to 11 in. (0.229 to 0.279 m) were tested in the University of Illinois at Urbana-Champaign (UIUC) 2.8×4 ft (0.853×1.219 m) low-turbulence wind tunnel at low Reynolds numbers to measure the propeller thrus...

To reduce emissions from the aviation industry and meet targets set by different countries, research has been focused on investigating all-electric aircraft. make this vision practical, superconducting machines are expected to power propellers, as they half size a third weight of conventional machines. The main purpose paper is do higher-level study reliable holistic protection system for aircr...

Abstract In this practical approach to distributed propulsion, the solar-powered manned motorglider icaré 2 has been used as a testbed for wingtip propulsion. The large wingspan and slow cruising speed of are highly suitable assess influence potential propellers at wingtips yaw control. paper describes work multidisciplinary team consisting researchers, engineers, pilots students, starting from...

Pod drives are modern outboard ship propulsion systems with a motor encapsulated in a watertight pod. The motor’s shaft is connected directly to one or two propellers. The whole unit hangs from the stern of the ship and rotates azimuthally, thus providing thrust and steering without the need of a rudder. Force/momentum and phase-resolved LDA measurements were performed for inline co-rotating an...

The Council of European Aerospace Societies (CEAS) Aeroacoustics Specialists Committee (ASC) supports and promotes the interests of the scientific and industrial aeroand related areas. Each year the committee highlights some of the research and development projects in Europe. This paper is a report on highlights of aeroacoustics research in Europe in 2010, compiled from information provided to ...

Control of high performance military aircraft propulsion systems continues to become more complex in response to increasingly demanding operational and multiple mission needs. Propulsion systems of the future will require adaptive engine control to enable precise and repeatable performance within stringent reliability, safety and cost constraints. In order to achieve performance that meets thes...

Understanding the behaviour of propeller-driven aircraft has been primary goal aviation since brothers Orville and Wilbur Wright. Traction characteristics, which have over time become dominant in field addition to thrust, both examined analysed, nevertheless represent a sort oxymoron modern aviation. In this sense, authors paper present possibilities static performance characteristics vibration...

The high-power density and good scaling properties of electric motors enable new propulsion arrangements aircraft configurations. This results in distributed systems allowing to make use aerodynamic interaction effects between individual propellers the wing aircraft, improving flight performance thus reducing in-flight emissions. In order systematically analyze these effects, an unmanned resear...

In this paper, a multidisciplinary optimization design method and its verification of low-noise aircraft propellers considering aerodynamics, noise, structural strength were carried out to further reduce the aerodynamic noise propellers. The Vortex Lattice Method-based Lift Surface Method Frequency-Domain-based Hanson deployed evaluate performance far-field propeller with validation by benchmar...