نتایج جستجو برای: propulsion system

تعداد نتایج: 2236696  

2014
Kanupriya Arora Majumi Mohamad Noohu

Introduction: Wheelchairs are the prime mobility aid of persons with spinal cord injuries. Manual wheelchair propulsion puts a lot of demand on the cardiopulmonary as well as the skeletal system. The main purpose of the study was to compare the effects of both arm ergometry training and progressive resistance exercise training of upper limbs on resting heart rate and distance covered during whe...

ژورنال: مواد پرانرژی 2021

Gel propellants are the optimal state of liquid propellants. Gel propellants not only have the advantages of liquid and solid propellants, but also don’t have the disadvantages of the mentioned propellants. The rheological properties of these propellants have a great effect on their propulsion systems, especially in the dynamic state. With regard to the fact that missile and rocket propellants ...

2013
Sina Hamzehlouia Afshin Izadian Sohel Anwar

The utilization of renewable energies as an alternative for fossil fuels is considerably growing due to an increasing environmental concern and exhaustion of fossil fuels [1-3]. Transportation electrification is one way to replace or reduce fossil fuels with renewable energy sources. Several propulsion systems including hybrid electric vehicles and plug in hybrid electric vehicles have been int...

Mini and micro robots, which can swim in an underwater environment, have drawn widespread research interests because of their potential applications to the clinical drug delivery, biotechnology, manufacturing, mobile sensor networks, etc. In this paper, a prototype of microrobot based on the motion principle of living microorganisms such as E. Coli Bacteria is presented. The properties of this ...

2007
JERZY GARUS

The paper addresses nonlinear control of an underwater robot. A way-point line of sight scheme is incorporated to following a desired path. Command signals are generated by an autopilot consisting of three fuzzy controllers. A methods of thrust distribution among propellers in the robot’s propulsion system is also proposed. Optimisation of thrust allocation is directed towards minimisation of e...

2001
Moshe Idan Matthew Johnson Anthony J. Calise John Kaneshige

This paper presents an intelligent fault tolerant flight control system that blends aerodynamic and propulsion actuation for safe flight operation in the presence of actuator failures. Fault tolerance is obtained by a nonlinear adaptive control strategy based on on-line learning neural networks and actuator reallocation scheme. The adaptive control block incorporates a recently developed techni...

2016

Unavailability of a ship propulsion system under aging effects and proper maintenance is estimated using GO‐FLOW. GO‐FLOW is an effective software tool for the unavailability analysis of complex systems. Aging effects are incorporated into GO‐FLOW using a time‐dependent technique and assuming a linear aging model. The results show that the aging effects and improper maint...

2014
Mathieu Lalumiere Martine Blouin Felix Chenier Rachid Aissaoui Dany H. Gagnon

A repeated cross-sectional research design was used in this study to compare propulsion biomechanics on a newly developed wheelchair simulator to overground natural propulsion. Seventeen individuals (15 men and 2 women) with spinal cord injury between T4 and T12 completed two 20-meter propulsion trials on a tiled surface and two 1-minute propulsion sessions on the simulator. The main outcome me...

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