Physics-Based Piloted Flight Simulation of Helicopters Using Multibody Dynamics

2016 ◽  
Author(s):  
Andrea Zanoni ◽  
Pierangelo Masarati ◽  
Giuseppe Quaranta
Keyword(s):  
Multibody Dynamics ◽  
First Principles ◽  
Flight Dynamics ◽  
General Purpose ◽  
Simulation System ◽  
Flight Simulation ◽  
Multibody Simulation ◽  
Process Communication ◽  
Inter Process Communication

This paper describes a pilot-in-the-loop flight simulation system based on first-principles general-purpose multibody dynamics for the piloted simulation of the flight dynamics of rotor-craft. Focus is placed on aspects related to multibody simulation and the related inter-process communication requirements and solutions.

scholarly journals Functional Design of a Hybrid Leg-Wheel-Track Ground Mobile Robot

Machines ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 10
Author(s):  
Luca Bruzzone ◽  
Mario Baggetta ◽  
Shahab E. Nodehi ◽  
Pietro Bilancia ◽  
Pietro Fanghella
Keyword(s):  
Mobile Robot ◽  
High Energy ◽  
General Purpose ◽  
Stair Climbing ◽  
Functional Design ◽  
Multibody Simulation ◽  
Embodiment Design ◽  
Locomotion System ◽  
Hybrid Locomotion ◽  
Wheel Track

This paper presents the conceptual and functional design of a novel hybrid leg-wheel-track ground mobile robot for surveillance and inspection, named WheTLHLoc (Wheel-Track-Leg Hybrid Locomotion). The aim of the work is the development of a general-purpose platform capable of combining tracked locomotion on irregular and yielding terrains, wheeled locomotion with high energy efficiency on flat and compact grounds, and stair climbing/descent ability. The architecture of the hybrid locomotion system is firstly outlined, then the validation of its stair climbing maneuver capabilities by means of multibody simulation is presented. The embodiment design and the internal mechanical layout are then discussed.

Helicopter Rotor Blade Flexibility Simulation for Aeroelasticity and Flight Dynamics Applications

2014 ◽  
Vol 59 (4) ◽  
pp. 1-18 ◽  
Author(s):  
Ioannis Goulos ◽  
Vassilios Pachidis ◽  
Pericles Pilidis
Keyword(s):  
Real Time ◽  
Rotor Blade ◽  
Flight Dynamics ◽  
Integrated Approach ◽  
Flight Simulation ◽  
Response Characteristics ◽  
Helicopter Flight ◽  
Finite State ◽  
The Time Domain ◽  
Blade Loads

This paper presents a mathematical model for the simulation of rotor blade flexibility in real-time helicopter flight dynamics applications that also employs sufficient modeling fidelity for prediction of structural blade loads. A matrix/vector-based formulation is developed for the treatment of elastic blade kinematics in the time domain. A novel, second-order-accurate, finite-difference scheme is employed for the approximation of the blade motion derivatives. The proposed method is coupled with a finite-state induced-flow model, a dynamic wake distortion model, and an unsteady blade element aerodynamics model. The integrated approach is deployed to investigate trim controls, stability and control derivatives, nonlinear control response characteristics, and structural blade loads for a hingeless rotor helicopter. It is shown that the developed methodology exhibits modeling accuracy comparable to that of non-real-time comprehensive rotorcraft codes. The proposed method is suitable for real-time flight simulation, with sufficient fidelity for simultaneous prediction of oscillatory blade loads.

Architecture, Ability, and Adaptability of Recursive Internetworking Architecture – A Review

2021 ◽  
Vol 14 ◽  
Author(s):  
Bhushana Samyuel Neelam ◽  
Benjamin A Shimray
Keyword(s):  
Complex Network ◽  
Network Architecture ◽  
Future Internet ◽  
The Novel ◽  
Process Communication ◽  
Cyber Threats ◽  
The Future ◽  
Future Internet Architectures ◽  
Reliable Solution ◽  
Inter Process Communication

: The ever-increasing dependency of the utilities on networking brought several cyber vulnerabilities and burdened them with dynamic networking demands like QoS, multihoming, and mobility. As the existing network was designed without security in context, it poses several limitations in mitigating the unwanted cyber threats and struggling to provide an integrated solution for the novel networking demands. These limitations resulted in the design and deployment of various add-on protocols that made the existing network architecture a patchy and complex network. The proposed work introduces one of the future internet architectures, which seem to provide abilities to mitigate the above limitations. Recursive internetworking architecture (RINA) is one of the future internets and appears to be a reliable solution with its promising design features. RINA extended inter-process communication to distributed inter-process communication and combined it with recursion. RINA offered unique inbuilt security and the ability to meet novel networking demands with its design. It has also provided integration methods to make use of the existing network infrastructure. The present work reviews the unique architecture, abilities, and adaptability of RINA based on various research works of RINA. The contribution of this article is to expose the potential of RINA in achieving efficient networking solutions among academia and industry.

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