This paper describes the design, numerical analyses, and wind tunnel tests of scaled model a propeller serving as propulsive element for experimental an advanced regional turboprop aircraft with engines installed on horizontal tailplane tips. The design has been performed by complying thrust similarity from full-scale requirements. Numerical analyses high-fidelity aerodynamic solver confirmed t...

4 Other perturbations and developments 16 4.1 3rd order responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4.2 Spin and magnetic effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.3 Elastic constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.4 Electron-Phonon coupling . . . . . . . . . . . . . . . . . . . . . . . . . ....

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...

A = area of an image b = wingspan CD0 = zero-lift drag coefficient E = energy for physical system e0 = Oswald efficiency factor f = focal length of camera H = entropy cost Hdist = horizontal distance of imaging plane Jp = cost function for physical system K = aerodynamic parameter k = execution cycle of task τ L = Lagrangian of constrained cost function m = mass of aircraft P v = power as a fun...

Airplanes are one of the most frequently used forms transportation globally. The aircraft's ability to mobilize between continents and its near-sound speed makes it an excellent cross-country travel choice. This paper discussed production process D-nose panel components for A-350 airplane wing in PT. Dirgantara Indonesia. Indonesia (Persero) or commonly referred as PTDI, is aircraft companies A...

This paper proposes a nonlinear dynamics model for a marine propeller able to reproduce the propeller thrust over the full four-quadrant range of propeller shaft speed and vessel speed. A two-state model has been identi…ed from experimental data. The model includes a state equation for the propeller shaft speed and one that describes the dynamics of the axial ‡ow velocity. The model reproduces ...

This paper discusses a study of the effects of pylon trailing edge blowing on pusher propeller performance and noise emissions. Experimental investigations were performed in a low speed open jet wind tunnel, using a powered propeller model and a generic pylon model. A novel pylon blowing system was integrated in the aft part of the pylon to provide a uniform outflow. The numerical analysis was ...

Fluid-structure interaction between an ice sheet on the water surface and a podded R-Class propeller was examined and analyzed in terms of numerical simulation using a newly enhanced unsteady timedomain, multiple body panel method model. The numerical model was validated and verified and also checked against various previous in-house experimental measurements. The simulation was performed in a ...

Positioning systems include different control functions for automatic positioning and guidance of marine vessels by means of proper action of the thruster and propeller devices. These may be controllable pitch propeller (CPP) with fixed speed, controllable speed with fixed pitch propeller (FPP), or controllable pitch and speed in combination. The positioning controller computes commanded forces...

A new design of a propulsion device is a Collective and Cyclic Pitch Propeller, CCPP. The principle o f the CCPP is similar to a helicopter main rotor. As such, the propeller operates as a combination between a propulsion device and a directional manipulator. It can generate side thrust to provide direct ional control, in addition to axial thrust variation, which can be generated on a normal co...