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Articles 181 - 193 of 193
Full-Text Articles in Engineering
Computation Of Eclipse Time For Low-Earth Orbiting Small Satellites, Sumanth R M
Computation Of Eclipse Time For Low-Earth Orbiting Small Satellites, Sumanth R M
International Journal of Aviation, Aeronautics, and Aerospace
This paper addresses a method for computing eclipse and daylight time for satellites in LEO. Continuous health-monitoring of the satellite is required for the success the mission. For this, the satellites are primarily powered by solar energy but during the eclipse time, the satellite’s functioning is affected as it cannot generate power during this period and also, its temperature drops rapidly. To tackle these issues, computing eclipse time for satellites becomes essential so as to plan for sizing its secondary power source for continuous functioning. In this work, eclipse time is being computed and it is shown that eclipse time …
Mro Cybersecurity Swot, Danita Baghdasarin
Mro Cybersecurity Swot, Danita Baghdasarin
International Journal of Aviation, Aeronautics, and Aerospace
This article intended to identify gaps in the safety management system (SMS) framework when it comes to dealing with cyber risks and hazards in the maintenance, repair, and overhaul (MRO) industry. Cybersecurity is currently a concern of the aviation industry, but organizations in the MRO industry do not seem to be aware of any specific risks and hazards and therefore are not prepared to handle them. Concerns are largely around the increasing reach of aviation and the digital transformation of infrastructure, but the body of knowledge does not go into any greater detail. As a result, it is hard to …
Small Unmanned Aircraft System Operator Compliance With Visual Line Of Sight Requirements, Ryan J. Wallace, Kristine M. Kiernan, John Robbins, Tom Haritos
Small Unmanned Aircraft System Operator Compliance With Visual Line Of Sight Requirements, Ryan J. Wallace, Kristine M. Kiernan, John Robbins, Tom Haritos
International Journal of Aviation, Aeronautics, and Aerospace
Operating small unmanned aircraft systems (sUAS) beyond visual line of sight (BVLOS) without appropriate waivers and risk mitigations presents a serious hazard to manned aircraft and other users of the National Airspace System. According to federal regulations codified in 14 CFR 107 and PL 112-95 Sec. 336, sUAS operators are required to fly their craft within visual line of sight. Currently, no data exists to determine if operators are compliant with these rules. The authors sought to conduct an exploratory research study to determine the distance operators fly their sUAS craft and evaluate the likelihood of remaining in visual contact …
Aircraft Interior Design And Satisfaction For Different Activities; A New Approach Toward Understanding Passenger Experience, Golnoosh Torkashvand, Lucas Stephane, Peter Vink
Aircraft Interior Design And Satisfaction For Different Activities; A New Approach Toward Understanding Passenger Experience, Golnoosh Torkashvand, Lucas Stephane, Peter Vink
International Journal of Aviation, Aeronautics, and Aerospace
Among airlines and aircraft manufacturers there is much attention for passenger experience. However, there is not much literature on how the activities of passengers can be supported by the aircraft interior. The current study focuses on the need finding and requirements analysis of flight passengers. Twenty-three activities were defined based on retrospective interviews and brainstorming sessions. Respondents were asked to rate their overall perception related to the importance of each of those 23 activities on a Linkert scale, from “not at all important” to “extremely important”. On a separate question they were also asked to rate their overall satisfaction by …
Crew Resource Management For Large Unmanned Aircraft Systems Operations, Peter S. Neff
Crew Resource Management For Large Unmanned Aircraft Systems Operations, Peter S. Neff
International Journal of Aviation, Aeronautics, and Aerospace
Abstract
The author explored the application of crew resource management (CRM) principles to commercial flight operations conducted by large unmanned aircraft systems (UAS). Currently, there is no regulatory structure governing the operation of large UAS in commercial flight operations. However, the National Aeronautics and Space Administration (NASA) forecasted the future by demonstrating the feasibility of large remotely piloted UAS flight in June 2018 by flying Ikhana, a modified MQ-9 Predator B aircraft, over a 415-mile route in Class A and in Class E airspace over southern California (Kooser, 2018). Ikhana is a 10,500-pound aircraft with a wingspan of 66 feet …
Determination Of Parameters During Quasi-Steady Stall Maneuver Using Genetic Algorithm, Ambuj Srivastava, Ajit Kumar, Ajoy Kanti Ghosh
Determination Of Parameters During Quasi-Steady Stall Maneuver Using Genetic Algorithm, Ambuj Srivastava, Ajit Kumar, Ajoy Kanti Ghosh
International Journal of Aviation, Aeronautics, and Aerospace
The current work offers the determination of longitudinal aerodynamic derivatives during flight manoeuver at angles of attack near the stall. The flight manoeuver near stall is highly non-linear in nature due to separated flow at such elevated angles of attack. Kirchoff’s model for Quasi-Steady Stall Modelling (QSSM) is employed to represent the non-linear nature of aerodynamics during flight manoeuver at elevated angles of attack close to the stall. The Genetic Algorithm (GA) optimized output error method is utilized for estimating the parameters specific to stall characteristics and longitudinal aerodynamics of the ATTAS aircraft. The comparative evaluation of the parameter estimates …
Dual Graphene Patch Antenna For Ka Band Satellite Applications, Mohammed Amin Rabah, Mohammed Bekhti
Dual Graphene Patch Antenna For Ka Band Satellite Applications, Mohammed Amin Rabah, Mohammed Bekhti
International Journal of Aviation, Aeronautics, and Aerospace
Currently; grapheme offers a new opportunity to use in space technology and this is due to its amazing properties like conductivity, strength, flexibility and transparency which allows us to exploit new generation of ultra-fast nanoscale components; Since future wireless communication techniques are geared towards the use of the high frequency spectrum and many recent research prove this trend. This letter presents a proposal for design of a dual graphene-based antenna to use in new communication techniques in Ka band, where the proposed antenna can work for uplink and dowlink frequencies at same time since it has return loss less then …
Autonomous Airliners Anytime Soon?, Samuel M. Vance, Evan C. Bird, Daniel J. Tiffin
Autonomous Airliners Anytime Soon?, Samuel M. Vance, Evan C. Bird, Daniel J. Tiffin
International Journal of Aviation, Aeronautics, and Aerospace
This research seeks to extend the body of knowledge on factors influential in the decision to fly on an autonomous airliner as a passenger. Only a handful of studies have probed this direct question in the last 16 years, but the data is showing a growing public acceptance of this type of travel. Pivotal in this consideration is the basic element of trust – trust in automated airliners and trust in the airline and Air Traffic Control systems which are responsible for autonomous airliners. Human trust has many forms and manifestations, but in the end, it is a dichotomous or …
Double Stud Cargo Fitting Research, Alternative Cargo Clip Design And Analysis, Cemal İrfan Çalişkan, Ebubekir Koç Dr, Hamaid Mahmood Khan Dr, Mustafa Enes Bulduk
Double Stud Cargo Fitting Research, Alternative Cargo Clip Design And Analysis, Cemal İrfan Çalişkan, Ebubekir Koç Dr, Hamaid Mahmood Khan Dr, Mustafa Enes Bulduk
International Journal of Aviation, Aeronautics, and Aerospace
It can be said that today's civil aviation basics began to be laid in the 1950s. This date is also important as the period in which the rules are being written and at the same time, some system solutions are produced by testing the methods of cargo loading. The cargo clip used in these cargo loading systems will be the subject of our article. In this context, the development process of the clip, which started in 1953 until today, will be examined in the light of the patent applications of the period; Afterwards, alternative clip-on work to the current cargo …
A Trust In Air Traffic Controllers (T-Atc) Scale, Bradley S. Baugh, Scott R. Winter
A Trust In Air Traffic Controllers (T-Atc) Scale, Bradley S. Baugh, Scott R. Winter
International Journal of Aviation, Aeronautics, and Aerospace
Trust is a concept that cannot be easily measured. Further, trust is domain-specific. Trust is a foundational aspect of safe flight operations in the National Airspace System, and while there has been much attention to trust in teams and trust in automation, there appears to be a gap in knowledge of a pilot’s trust in air traffic controllers. The purpose of this study was to develop and validate the Trust in Air Traffic Controllers (T-ATC) scale, a summative scale to measure a pilot’s trust in air traffic controllers. This study followed a three-step methodology. In steps one and two, words …
Fatigue Identification And Management In Flight Training: An Investigation Of Collegiate Aviation Pilots, Flavio A. Coimbra Mendonca Mr, Julius Keller, Chientsung Lu
Fatigue Identification And Management In Flight Training: An Investigation Of Collegiate Aviation Pilots, Flavio A. Coimbra Mendonca Mr, Julius Keller, Chientsung Lu
International Journal of Aviation, Aeronautics, and Aerospace
Objective: The purpose of this study was to evaluate collegiate aviation students’ self-awareness of their fatigue issues; to investigate possible causes of fatigue afflicting collegiate aviation students; and to investigate the collegiate aviation students’ lifestyle and perceptions of personal solutions to fatigue.
Background: Pilot fatigue is a significant safety hazard in aviation operations. Several factors can contribute to fatigue, including inadequate sleep, long work hours, and inadequate nutritional habits. Some factors, such as social and academic activities, could be unique for Title 14 Code of Federal Regulations (CFR) Part 141 collegiate aviation pilots. Previous studies have addressed fatigue in …
Effect Of Chemical Reactions On The Fluidic Thrust Vectoring Of An Axisymmetric Nozzle, Rachid Chouicha, Mohamed Sellam, Said Bergheul
Effect Of Chemical Reactions On The Fluidic Thrust Vectoring Of An Axisymmetric Nozzle, Rachid Chouicha, Mohamed Sellam, Said Bergheul
International Journal of Aviation, Aeronautics, and Aerospace
Abstract:
During the last years, several thrust control systems of aerospace rocket engines have been developed. The fluidic thrust vectoring is one of them; it is simple in design and offers a substantial gain in weight and in performance. Most of studies related to this device were carried out with cold gas. It’s quite legitimate to expect that the thermophysical properties of the gases may affect considerably the flow behavior. Besides, the effects of reacting gases at high temperatures, under their effects all flow parameters like to vary.
This study aims to develop a new methodology that allows studying and …
Aerodynamic Design And Exploration Of A Blended Wing Body Aircraft At Subsonic Speed, Sam Dakka Dr, Oliver Johnson
Aerodynamic Design And Exploration Of A Blended Wing Body Aircraft At Subsonic Speed, Sam Dakka Dr, Oliver Johnson
International Journal of Aviation, Aeronautics, and Aerospace
Blended Wing Body (BWB) is a novel aircraft concept which provides many different aerodynamic benefits over conventional aircrafts design. This research investigated the BWB design, L/D characteristics, surface pressure distribution and span-wise lift distribution of a BWB aircraft at low to medium subsonic speeds. A BWB model was designed, manufactured and tested in a subsonic wind tunnel to validate the CFD simulation. The results gained from the investigation proved that BWB has a L/D improvement of 9.4% than conventional aircrafts and 21% increase at medium subsonic speeds (Mach 0.6) compared to lower subsonic speeds of 25 m/sec. It was found …