Engineering Commons^™

Development Of A Sensor Suite For Atmospheric Boundary Layer Measurement With A Small Multirotor Unmanned Aerial System, Kevin A. Adkins, Christopher J. Swinford, Peter D. Wambolt, Gordon Bease

International Journal of Aviation, Aeronautics, and Aerospace

Small unmanned aerial systems (sUAS) are increasingly being used to conduct atmospheric research. Because of the dynamic nature and inhomogeneity of the atmospheric boundary layer (ABL), the ability of instrumented sUAS to make on-demand 3-dimensional high-resolution spatial measurements of atmospheric parameters makes them particularly suited to ABL investigations. Both fixed-wing and multirotor sUAS have been used for ABL investigations. Most investigations to date have included in-situ measurement of thermodynamic quantities such as temperature, pressure and humidity. When wind has been measured, a variety of strategies have been used. Two of the most popular techniques have been deducing wind from inertial …

Needs Based Assessment Of Agricultural Pilots In The Upper Midwest, Andrew Leonard, Cody Christensen, Jessie Hendricks

International Journal of Aviation, Aeronautics, and Aerospace

The agricultural aviation industry plays an increasingly important role in being able to meet the demands of food production on global level. With a limited ability to increase the amount of land used for food production, farmers will have to find a way to increase yields on current land. Unfortunately, the agricultural aviation industry is at risk of having a shortage of pilots able to operate its aircraft. With the current generation of agricultural pilots reaching retirement, operators are scrambling to find qualified pilots to fill their seats. The majority of operators indicated that when looking for a new pilot …

Analyzing The Threats Of The Failure Of Visual Awareness During A Visual Approach For Transport Category Aircraft, Shlok Misra

International Journal of Aviation, Aeronautics, and Aerospace

The purpose of this study was to evaluate the risk posed by the failure of visual awareness during visual approaches for transport category aircraft. Visual awareness is critical while conducting visual approaches and it is important to study the factors that can limit the capabilities of human beings to maintain visual awareness. Visual approaches expose pilots to multiple and critical visual stimuli that require strong visual awareness for safe operations. The study conducted a detailed analysis of the Flight Safety Foundation accident database to study the reported incidents during visual approaches from 1998-2018. The effect of human factors was studied …

Open-Ended Capstone Project: Designing And Manufacturing Of A Low-Cost Carbon Fiber Reinforced Composite Suborbital Rocket Payload Housing Using A 3d Printed Core, Garam Kim, Sergey Dubikovsky, Peng Hao Wang, Ronald Sterkenburg

International Journal of Aviation, Aeronautics, and Aerospace

Composite materials are utilized in many industries today due to its high performance and lightweight. However, the part manufacturing process of traditional composites is complicated and often involves high cost. The molds used for composite manufacturing are usually one of the contributors to the high part manufacturing cost. The authors demonstrated in this paper a manufacturing process for a carbon fiber reinforced composite rocket payload housing using an additively manufactured polylactic acid (PLA) payload housing core. The paper also demonstrates the designing and manufacturing of a functional product, which was used in a real-life application, achieved by college undergraduate students. …

Factors Influencing The Emergence Of Suborbital Space Tourism, Brian T. Musselman, Steven Hampton

International Journal of Aviation, Aeronautics, and Aerospace

Suborbital space tourism is becoming a reality. The suborbital space industry is predicted to grow from $340 billion to $1 trillion over the next 20 years. A literature review, conducted on references from 2012 to 2019, identified five factors associated with the development and management of safe and effective suborbital space tourism. This paper summarizes the aspects of demand, ticket cost, motivation and risk, health risk, and policy, and how each influences the development and management of suborbital space toursim.

Significance Of Incorporating Weather Technology Training For Ga Pilots To Curb Fatalities, Rajee Olaganathan Dr, Richard G. Ham Dr.

International Journal of Aviation, Aeronautics, and Aerospace

Weather is considered to be the main threat to aviation safety from the early 1900s. Despite advanced technologies available at present, the weather still poses a risk to the ever-growing aviation industry. This research gives an overview of weather-related accidents with special reference to Part 91 operation in the United States from 1982 and 2017 based on the NTSB database. The analysis shows that 14 CFR Part 91 operations experienced more accidents than Part 121 operations, and weather was a cause or a contributing factor in 35 % of fatal general aviation accidents. The study also identified the main weather …

Analysis Of The Icao Usoap Results In The Persian Gulf Region And Its Relation To The Economic Indicators, Mohsen Ghahremani

International Journal of Aviation, Aeronautics, and Aerospace

No abstract provided.

Low Thrust And Low Power Propulsion Systems Options For Small Satellites, Redha Amri

International Journal of Aviation, Aeronautics, and Aerospace

The present work focuses on the study of low thrust propulsion systems. Cold gas, thermal and monopropellant systems with a blow down depressurisation mode have been taken in consideration in this study. Most of propellants that can be used for small satellite propulsion systems were selected here in order to give the propulsion engineer many propellant options with a good idea about the performance of each propellant, and this is important to make a good trade-off during the system design. For cold gas and thermal propulsion, the propellants taken into account in this study are: Oxygen (O2), Nitrogen (N2), Hydrogen …

The Current State Of Counter Unmanned Aerial System Policy In The U.S., Travis L. Cline, Damon Lercel, Umit Karabiyik, J. Eric Dietz

International Journal of Aviation, Aeronautics, and Aerospace

Threats from drones are becoming an increasing security concern throughout the U.S. and worldwide. No current standards exist for the manufacture and operation of counter unmanned aerial system technology, making it difficult to determine effective systems and components for specific uses. Current policy within the U.S. makes unmanned aerial system (UAS) interdiction illegal for all but a few Federal entities currently. This document is a summary of counter unmanned aerial systems policy within the U.S.

Converting The Aircraft Passenger’S Cabin To An Airship When There Is A Danger Of Crash, Abouzar Bahari

International Journal of Aviation, Aeronautics, and Aerospace

From the beginning of the airplane invention until now, many kinds of airliners have been introduced by different companies to transport the people throughout the world. However, although the manufacturing companies have highly promoted the technical and safety systems of the airliners and made them the safest traveling equipment, there is still a possibility of their failure in the technical and/ or safety systems. The serious faults that may occur in an aircraft during the flight can cause the loss of its control. Improving the aircraft safety to guarantee the security, both bodily and spiritually, is of a high demand. …

Experimental And Computational Evaluation Of Five Hole Five Probe Flow Analyzer For Subsonic Wind Calibration, Akhila Rupesh Ms, J V Muruga Lal Jeyan Dr

International Journal of Aviation, Aeronautics, and Aerospace

It is very essential to predict the flow and its related parameters to understand real life fluid flow. The real-life fluid problems are studied with wind tunnels which gives very efficient results in practice. But in the case of wind tunnel studies flow angularities plays crucial role. Flow angularity determination includes measurement of static pressure, dynamic pressure and inflow angles. Flow prediction even hold a very strong hand in design process. Designing and testing being the foundation of any process industry, flow measurements and its related parameters have to be well evaluated. In such cases, wind tunnels play important role …

Real-Time Urban Weather Observations For Urban Air Mobility, Kevin A. Adkins, Mustafa Akbas, Marc Compere

International Journal of Aviation, Aeronautics, and Aerospace

Cities of the future will have to overcome congestion, air pollution and increasing infrastructure cost while moving more people and goods smoothly, efficiently and in an eco-friendly manner. Urban air mobility (UAM) is expected to be an integral component of achieving this new type of city. This is a new environment for sustained aviation operations. The heterogeneity of the urban fabric and the roughness elements within it create a unique environment where flight conditions can change frequently across very short distances. UAM vehicles with their lower mass, more limited thrust and slower speeds are especially sensitive to these conditions. Since …

Analysis Of Runway Incursion Trends: Implications For Cost-Benefit Analysis Of Mitigation Investments, David C. Ison

International Journal of Aviation, Aeronautics, and Aerospace

This causal-comparative and correlation study investigated the costs of runway incursion safety improvements in relation to their effectiveness to assess potential aviation system benefits.Two airports (Los Angeles International and Dallas-Ft. Worth International), which were early adopters of Runway Status Lights (RWSL), a runway incursion technology, were targeted in this analysis. Findings indicated that there were no significant differences in counts or rates of Category A, B, and D incursions at LAX and DFW when comparing the time periods before versus after RWSL installation. Category C counts and rates were found to have increased significantly after RWSL installation. The findings of …

A Conceptual Framework For Valuating Airline Frequent Flyer Program Miles, Yi Gao

International Journal of Aviation, Aeronautics, and Aerospace

Frequent flyer programs of airlines have gradually evolved into a multi-billion dollar business over the years. Valuing frequent flyer program miles accurately and fairly has its practical implications both for airlines and members of frequent flyer programs. As a ground-breaking academic study dedicated to airline loyalty programs, this study aims to build a conceptual framework to guide the valuation of miles. Through comparing required miles for different award types with their equivalent cash prices, this study has successfully addressed the purchasing power of AAdvantage miles of American Airlines when they are used for award redemption. Not only can this study …

Occupational Radiation Exposures In Aviation: Air Traffic Safety Systems Considerations, Adeyinka Olumuyiwa Osunwusi

International Journal of Aviation, Aeronautics, and Aerospace

Radiation from both natural and artificial sources is an inescapable and undeniable reality of human existence. Aside from exposure to radiation from a wide variety of natural sources including background ionizing radiation and electromagnetic fields from the earth, the increasing multiplicity of scientific and technological advancements and the growing complexities of the urbanization process are combining to elevate the susceptibility of mankind to non-ionizing radiation from electromagnetic fields. Debates regarding the health outcomes of occupational radiation exposures in aviation have been intense in recent times with a focus that appears predominantly riveted on in-flight radiation exposures. Whereas the vast majority …

Efficiency Analysis Of A Congested Brazilian Airport Applying Slots Optimization Control: Congonhas Airport Case, Mariana Franco B. Mendes, Rafael Roco De Araujo, Ana Paula Beck Da Silva Etges, Massoud Bazargan

International Journal of Aviation, Aeronautics, and Aerospace

The current slot allocation mechanism in Brazil, based on the International Air Transport Association (IATA) rules, and its supplementary local regulation The National Civil Aviation Agency (ANAC), displays a few issues and limitations (e.g. slot misuse, allocation inefficiencies). Such issues are particularly present in the case of busy airports that works near their maximum capacity for major parts of the day. This inefficiency problem is generated because of the complexity of slot allocation added to the limited decision support available for the Brazilian system. This study focuses on the implementation of an optimal slot model, based on IATA regulations with …

Identify Aerodynamic Derivatives Of The Airplane Attitude Channel Using A Spiking Neural Network, Nguyen Quang Vinh, Nguyen Duc Thanh, Hoang Minh Dac, Truong Dang Khoa

International Journal of Aviation, Aeronautics, and Aerospace

The paper proposes a method for identifying aerodynamic coefficient derivatives of aircraft attitude channel using spiking neural network (SNN) and Gauss-Newton algorithm based on data obtained from actual flights. Using SNN combination with Gauss-Newton iterative calculation algorithm allows the identification of aerodynamic coefficient derivatives in a nonlinear model for aerodynamic parameters with higher accuracy and faster calculation time. The paper proposes an algorithm to train the SNN multi-layer network by Normalized Spiking Error Back Propagation (NSEBP), in which, in the forward propagation period, the time of output spikes is calculating by solving quadratic equations instead of detection by traditional methods. …

Automatic Gaze Classification For Aviators: Using Multi-Task Convolutional Networks As A Proxy For Flight Instructor Observation, Justin Wilson, Sandro Scielzo, Sukumaran Nair, Eric C. Larson

International Journal of Aviation, Aeronautics, and Aerospace

In this work, we investigate how flight instructors observe aviator scan patterns and assign quality to an aviator's gaze. We first establish the reliability of instructors to assign similar quality to an aviator's scan patterns, and then investigate methods to automate this quality using machine learning. In particular, we focus on the classification of gaze for aviators in a mixed-reality flight simulation. We create and evaluate two machine learning models for classifying gaze quality of aviators: a task-agnostic model and a multi-task model. Both models use deep convolutional neural networks to classify the quality of pilot gaze patterns for 40 …

Experimental Evaluation Of Strength Degradation Temperature For Carbon Epoxy Filament Wound Composite, Jai Krishna Mishra, Surya Prakash Rao Ch Dr, Subhash Chandra Bose P Dr, Kishore Nath N Dr, Rama Rao Golla Mr

International Journal of Aviation, Aeronautics, and Aerospace

Polymeric composites have been widely used in various structural and thermal aerospace applications. Polymeric composites having high strength and high modulus reinforcement are ideally suited for lot of critical aerospace applications as structure is designed with high specific strength and high specific modulus. In case of launch vehicles/ missile one such application is design and manufacturing of solid rocket motor casing with polymeric composites as it give high performance and reduces inert weight of propulsion system. The high specific strength and high specific modulus of composite materials makes it ideal choice for designing the composite rocket motor case (CRMC). These …

Uas For Public Safety Operations: A Comparison Of Uas Point Clouds To Terrestrial Lidar Point Cloud Data Using A Faro Scanner, Joseph S. Cerreta, Scott S. Burgess, Jeremy Coleman

International Journal of Aviation, Aeronautics, and Aerospace

Unmanned Aircraft Systems (UAS) can be useful tools for public safety agencies during crime or vehicle accident scene investigations if it can provide value to the resource-constrained agency. The speed of data collection, while minimizing first responder risk, while sustaining an acceptable level of accuracy and precision compared to other tools is where the agency may find value. During a recent homicide investigation in Florida, a UAS provided saved 81% in law enforcement labor hours with an acceptable level of accuracy compared to traditional methods. The purpose of this research was to compare UAS to determine if there were differences …

Assessment Of Egnos Performance For Civil Aviation Flight Phase In The Edge Coverage Area, Bilal Beldjilali, Salem Kahlouche, Lahouaria Tabti

International Journal of Aviation, Aeronautics, and Aerospace

The performances of the navigation systems used for different flight phases especially in the landing of an aircraft must be very high. The International Civil Aviation Organization defines the standards which must meet by any navigation systems to be certified, so it can be used by civil aircraft. To achieve the level of security defined by the International Civil Aviation Organization, new augmentation systems based satellites are developed. In Europe, the EGNOS system was developed to improve both GPS and Galileo performance. In this paper the performance of the EGNOS system for civil aviation flight phase was investigated. Four parameters …

A Review Of Dji’S Mavic Pro Precision Landing Accuracy, Cody Yoakum, Joseph Cerreta

International Journal of Aviation, Aeronautics, and Aerospace

Precision landing has the potential to increase the accuracy of autonomous landings. Unique applications require specific landing performance; for example, wireless charging loses efficiency with a misalignment of 100mm. Unfortunately, there is no publicly available information for the DJI Mavic Pro’s landing specifications. This research investigated the ability of a Mavic Pro to land at a specified point accurately. The purpose of this research is to determine if precision landings are more accurate than non-precision autonomous landings and if the Mavic Pro is capable of applications such as wireless charging when using precision landings. A total of 128 (64 precision …

Simulation Analysis Of The Effects Of Performance-Based Navigation On Fuel And Block Time Efficiency, Shlok Misra

International Journal of Aviation, Aeronautics, and Aerospace

The commercial aviation industry has been grown steadily in the past decade in terms of the number of flights operated and passengers traveled. The Federal Aviation Administration has introduced several technologies and initiatives under the NextGen Program. Performance-Based Navigation (PBN) is one such technology that is aimed at improving the efficiency of the National Airspace System which will improve system capacity and reduce delays. The airlines operate with restrained resources and investments into reducing fuel costs and flight times will directly or indirectly impact profit margins. PBN procedures and routes can help airlines reduce block times as flights will be …

Active Fault-Tolerance Of The Unmanned Aerial Vehicle Automatic Control Systems, Vuong Anh Trung, Nguyen Van Thinh, Nguyen Duc Thanh, Nguyen Quang Vinh, Tran Thuan Hoang

International Journal of Aviation, Aeronautics, and Aerospace

This paper presents an introductory overview of principles of the three-layer hierarchy of active fault-tolerance, providing, determination of the fault type with as many details as enough to get recoverable fault reason and failure toleration by flexible redundancy using; the conception of active fault-tolerant control in abnormal modes is described. Developed models and methods of a systematic approach to fault tolerance in the direction of the effective use of the signal, parametric and structural redundancies and selection of parrying tools. Performed experimental researches of the unmanned aerial vehicle (UAV) automatic control systems (ACS).

Towards A Hybrid Comfortable Passenger Cabin Interior For The Flying V Aircraft, Peter Vink, Thomas Rotte, Shabila Anjani, Chiara Percuoco, Roelof Vos

International Journal of Aviation, Aeronautics, and Aerospace

The Flying-V is a V-shaped airplane in development, which uses less fuel due its form. Passengers are in the oval cabin in the wing, which asks for an alternative design to the interior. At the same time there is a demand for more comfortable interiors.

80 students were asked to develop interior design ideas for this Flying V concept. A jury of experts selected four aircraft interior concepts and these were developed and a 1:1 scale mockup was made, with a hybrid interior. It included a chaise longue seats, the group space, beds and ‘staggered’ seats for the middle of …

Aviation Safety Regulations Versus Cns/Atm Systems And Functionalities, Adeyinka Olumuyiwa Osunwusi

International Journal of Aviation, Aeronautics, and Aerospace

The safety, security, efficiency, regularity, and sustainable development of international civil aviation operations revolve around a web of well-defined legal, policy, regulatory and methodological frameworks, which prescribe, inter alia, mandatory, advisory, prescriptive or discretionary requirements in respect of interactivities within the civil aviation community. In relation to this body of legal, policy, regulatory and methodological frameworks, the Convention on International Civil Aviation (otherwise known as the Chicago Convention, 1944) clearly represents the locus classicus. The Chicago Convention, which governs the activities of Contracting States of the International Civil Aviation Organization (ICAO), incorporates 96 Articles and embodies, to date, …

Analysis Of Part 135 Aircraft Accidents To Facilitate Flight Data Monitoring, Chenyu Huang

International Journal of Aviation, Aeronautics, and Aerospace

The scheduled and on-demand air services with Title 14 Code of Federal Regulations (CFR) Part 135 certificate are operating with relatively less stringent safety program criteria compared to Part 121 operations. The Part 135 aircraft flight operation was identified as one of the most wanted transportation safety improvements by the National Transportation Safety Board (NTSB). Implementation of flight data monitoring (FDM) programs was recommended to mitigate the risk of Part 135 operations. The FDM program is the process of routinely collecting and analyzing aircraft operational data to provide insight into flight operations for safety improvement. The development of more practical …

Adaptive Filtration Of The Uav Movement Parameters Based On The Aoa-Measurement Sensor Networks, Igor Tovkach, Serhii Zhuk

International Journal of Aviation, Aeronautics, and Aerospace

Currently, the urgent task is to assess the small-sized maneuvering UAVs movement parameters. The location of an unknown UAV as a radio source can be determined using AoA measurements of the wireless sensor network. To describe the movement of a maneuvering UAV, a model is used in the form of a dynamic system with switching in discrete time. The values of switching variable determine type of UAV movement. To synthesize trajectory filtering algorithms, the Markov property of the extended process is used, which includes a vector of UAV movement parameters and a switching variable. The optimal trajectory filtering algorithm describes …

Mini Unmanned Aerial Systems (Uav) - A Review Of The Parameters For Classification Of A Mini Uav., Ramesh Ps, Muruga Lal Jeyan

International Journal of Aviation, Aeronautics, and Aerospace

In the recent years, Mini Unmanned Aerial Vehicle (UAV) has generated a lot of interest both in military and civilian applications. Contemporary innovations have seen the entry of Mini UAV into a wide range of hitherto fore unexplored domains. Advancement in computer systems, miniaturisation of electronics, artificial intelligence and composite materials is propelling the development of Mini UAV. Mini UAV is a class of UAV within the large family of unmanned systems categorised by a set of parameters. However, there are glaring inconsistencies and lack of uniformity in specifying the parameters which define a Mini UAV. The paper explores the …

Performance Characteristics Design Of Pulsed Plasma Thrusters For Drag Counter-Reacting, Dr. Sam Dakka

International Journal of Aviation, Aeronautics, and Aerospace

Determining the performance characteristics of off the shelf pulsed plasma thrusters to enhance the life time of low earth orbiting platforms was investigated theoretically. Pulsed plasma thruster analysis was accomplished through development of correlations from historical data that distinguished between breech fed propellant to side fed propellant designs. Based on semi-empirical equations the power required by the thruster to counter react the drag was estimated and mapped for 1U to 27U CubeSat configurations for altitude ranging between 200km to 600km. It appears that the power required is dependent on the feeding delivery system design. For side fed designs the power …