Papers by Kelvin Sean James
The design of flying car CATIA V5 and fixing the short range radar to it. This radar is capable o... more The design of flying car CATIA V5 and fixing the short range radar to it. This radar is capable of destroying the foreign objects with the laser gun. When the foreign objects are detected the laser gun automatically locate the target and destroys it. This consists of a distance finding device using ultrasonic transducer and Ultrasonic sensor has transmitter and receiver.servo motor to rotate the radar 360 degrees .The Radar is operated through PC using wireless ZIGBEE technology and using wireless camera you can view both audio and video on the LCD screen.
The drag which exists due to interaction of wing-fuselage section is called as Interference drag.... more The drag which exists due to interaction of wing-fuselage section is called as Interference drag. High interference drag may lead to Fatigue which is progressive a failure mechanism and material degradation. The degradation or damage accumulation progresses until a finite crack is nucleated. The objective is to design a Fail-Safe Structural component and do the stress analysis and introducing carbon nano tubes in the structure for the self-healing process which is the modern technique to detect and heal the cracks. We have designed a Wing-Bracket attachment and done the analysis of wing-fuselage interaction using Ansys. We have represented Goodman diagram for Maraging steel and explained the methodology of Selfhealing technique .The flow over the wing is accelerated such that aerodynamic interference between the wing and fuselage is critical in transonic flight regime, which may leads to structural failure
The goal of this research project was to test the aerodynamic parameters like lift, drag, L\D rat... more The goal of this research project was to test the aerodynamic parameters like lift, drag, L\D ratio and also the pressure distribution on two authentic birds' wings i.e. pigeon and parrot .The main purpose of using two different birds' wings is to study the effectiveness of wing span and area, in their flight. This analysis was made using digital subsonic wind tunnel. Consequently it is necessary for us to study about aircraft flight with an emphasis on bird flight. As per the given theoretical results the lift and drag varied for both the birds. Though both the birds have the same ability to flap, for generating lift, the aerodynamic parameters varied because they had different velocities, and where adjusted at different angles of attack. The study of bird wing also gives the concept of alula which plays the major role and helps the bird to fly. It is a sensory anti-stalling structure and its activity depends on its shape and air pressure. In the present analysis the airflo...
Progress in Brain Research, 2002
This article reviews the use of therapeutic and functional electrical stimulation in subjects aft... more This article reviews the use of therapeutic and functional electrical stimulation in subjects after a spinal cord injury (SCI). Muscles become much weaker and more fatigable, while bone density decreases dramatically after SCI. Therapeutic stimulation of paralyzed muscles for about 1 h/day can reverse the atrophic changes and markedly increase muscle strength and endurance as well as bone density. Functional
Research in Sports Medicine, 2004
... AARON TUBMAN a , GORDON J. BELL b , AIKO KIDO b , KELVIN B. JAMES b , MARK J. HAYKOWSKY b &am... more ... AARON TUBMAN a , GORDON J. BELL b , AIKO KIDO b , KELVIN B. JAMES b , MARK J. HAYKOWSKY b & RICHARD B. STEIN b pages 115-133. ... Rodgers, MM, Glaser, RM, Figoni, SF,Hooker, SP, Ezenaw, BN, Collins, SR, Mathews, T, Suryaprasad, AG and Gupta, SC. 1991. ...
Archives of Physical Medicine and Rehabilitation, 2001
Objective: To determine whether a new leg-propelled wheelchair provides enhanced efficiency and m... more Objective: To determine whether a new leg-propelled wheelchair provides enhanced efficiency and mobility to wheelchair users. Design: Observational; subjects were tested while wheeling with the arms and legs and while walking (where possible) for 4-minute periods in random order with approximately 10minute rest periods between exercise sets. Setting: Tests were done on an indoor 200-meter track. Patients: Group 1, 13 controls; group 2, 9 persons with complete spinal cord injury (SCI); group 3, 13 persons with other motor disorders (retaining some voluntary control of the legs). Interventions: Not applicable. Main Outcome Measures: Physiological Cost Index (PCI), (computed as change in heart rate divided by velocity of movement) and oxygen consumption (V O 2) Results: Arm wheeling took significantly more effort (mean PCI ϭ .52 beats/m) than walking (.33 beats/m) in control subjects. Leg wheeling was most efficient (.23), requiring less than half the effort of arm wheeling and 30% less effort than walking. For SCI subjects, leg wheeling with functional electric stimulation (FES) required less than half the effort (.18) of arm wheeling (.40). The FES group could not walk. Subjects in group 3 could walk, but with substantial effort (1.81) compared with arm (.76) or leg wheeling (.64). Results for V O 2 were similar. Conclusions: Better wheelchair efficiency can be obtained for many disabled individuals, by moving the leg muscles voluntarily or with FES.
Neuromodulation: Technology at the Neural Interface, 2005
A BSTRACT To compare various novel and conventional systems for locomotion, a 25-year-old man was... more A BSTRACT To compare various novel and conventional systems for locomotion, a 25-year-old man was studied with motor complete spinal cord injury at the T4/5 level. He used various devices in the community, and changes in speed, physiological cost index (PCI), and oxygen consumption were measured periodically. Speed was fastest with a conventional manual wheelchair (nearly 120 m/min in a 4-min test). Speed was about 30% less, but the PCI was lowest (highest efficiency) using functional electrical stimulation (FES) of the quadriceps and hamstring muscles to propel a novel wheelchair. He walked with knee-ankle-foot orthoses (KAFO) at much lower speed (8.8 m/min) and higher PCI. He walked with an alternating gait using a new stance-control KAFO with FES. The speed was still slow (5 m/min), but he prefers the more normal-looking gait and uses it daily. Walking with FES and ankle-foot orthoses (AFO) was slowest (3.5 m/min) and had the highest PCI. In conclusion, the leg-propelled wheelchair provides a more efficient method of locomotion. A new stance-controlled KAFO with FES may provide a more acceptable walking system, but must be tested on other subjects.
Uploads
Papers by Kelvin Sean James