Engineering Commons^™

Feasibility Study Of An Integrated Safety Seat For Infants And Children Under The Age Of Two Traveling In Commercial Aircraft, Muneer A. Bakhsh

Master's Theses - Daytona Beach

The purpose of this study was to investigate the feasibility of integrated safety seat for children and infants onboard commercial aircraft. The researcher collected and analyzed data on the subject of safety seats for children and infants onboard commercial aircraft. The 115 participants for this study were randomly selected from the population of parents boarding commercial aircraft with infants and/or children. The research method used was descriptive and also compared the integrated safety seats for infants and children in automobiles to commercial aircraft. The survey examined whether or not parents were interested and willing to pay for an integrated safety …

The Impact Of The Simulated Digital Data Radio Communication Induced Interference On Voice Radio Communication, Daniela T. Kratchounova

Master's Theses - Daytona Beach

The transition of air/ground communications, from its present analog structure to a new digital communications architecture, will span a 10-year time frame. Testing to date indicates that the potential for interference from the digital system to the analog system would be critical, especially for General Aviation (GA) aircraft. This type of interference can be described as short, random bursts of noise capable of completely obliterating parts of the voice communication. The subsequent degrading effects on voice radio communications could jeopardize flight safety. The masking of parts of important information would result in distracted attention, debilitated cognitive performance, high level of …

General Aviation Aircraft: A Comparative Analysis Of Analog Instrument Display And Conceptual Primary Flight Display, Ungul Laptaned

Master's Theses - Daytona Beach

The primary purpose of this study was to evaluate the effects that analog instrument display versus primary flight display (PFD) had on pilot performance. Pilot performance was evaluated by: (a) time, and (b) number of errors. There were twenty subjects with a minimum of a private pilot license selected from the Aeronautical Science department at Embry-Riddle Aeronautical University. Three flight conditions (spoiler problem, engine problem, and flap failure) acting as a control group was given to the flight students while flying a traffic pattern. A Silicon Graphics® flight simulation software program and a video camera were used as the data …

An Intermittent-Combustion General Aviation Aircraft Engine Exhaust Noise Prediction Algorithm, Hiroko Tada

Master's Theses - Daytona Beach

From an environmental point of view, the reduction of aircraft noise has become an important factor recently. There are two factors that make airplane noise: propeller noise and engine noise. This report puts emphasis on only the engine noise in order to begin understanding what airplane engine exhaust noise is. At first, the engine exhaust noise is comprehended using the Dobrzynski's engine noise theory. Next, a discussion about an Embry-Riddle Aeronautical University (ERAU) engine system, engine exhaust system configurations, and microphone setting standards that show the ERAU engine system exhaust noise data. Finally, an Intermittent-Combustion (IC) General Aviation (GA) aircraft …

Strength And Weaknesses Of Npv Analysis And Its Application To Aircraft Value Modeling, Sebastian Lourier

Master's Theses - Daytona Beach

The purpose of this study is to analyze the Net Present Value (NPV) technique as a mean to forecast aircraft values and the analysis of aircraft value forecasting accuracy. The main part of the examination is the evaluation of the actual quality of aircraft appraisals. The appraisal evaluation is based on historical forecast accuracy determinations and on a comparison of 1998 aircraft value forecasts. The discussion of a survey conducted by the author in 1998, will reveal the disunity among the appraisers. The survey data was provided generously by the appraisers most recognized in the industry. A sensitivity analysis exhibits …

Designed Reduction Of Radiated Noise Characteristics From Two-Bladed General Aviation Propellers, Chandra K. Stich

Master's Theses - Daytona Beach

In recent years increased public awareness has made the reduction of environmental noise pollution a top priority for the aviation industry. Utilizing current technology, this study examines the reduction of noise generated by two bladed general aviation propellers, through design. The Aircraft Noise Prediction Program - Propeller Analysis System (ANOPP-PAS) is used to predict the noise and performance characteristics for an industry typical reference propeller as well as for the final quiet and efficient design.

This investigation is based on the use of a 200 hp engine rotating a 76 inch propeller. Typically, such a propeller would be rotated at …

Culture And The Management Of Advanced Automation: An Analysis Of Two Airlines, Surendra Cudah Ratwatte

Master's Theses - Daytona Beach

The purpose of this study was to investigate the relationship between National, Organizational and Professional Cultures and the attitudes toward managing advanced automation among the flightcrew of two international airlines. The Flight Management Attitudes Questionnaire developed by the University of Texas was utilized to determine the attitudes and perceptions held by airline pilots of various nationalities who fly late model Airbus and Boeing airliners. A census survey was conducted at the crew bases of the two airlines, one in the Middle East and other in South Asia. A total of 230 completed surveys were received. Chi Square analysis was used …

Optimization Of A Vortex Generator Configuration For A 1/4-Scale Piper Cherokee Wing, Kerri A. Raykowski

Master's Theses - Daytona Beach

Several sets of wind tunnel tests were performed to determine an optimum vortex generator configuration for a 1/4-scale model of the Piper Cherokee wing. Several variables were incorporated into this experiment in an effort to determine their influence on vortex generator performance enhancement (or degradation). Vane type vortex generators were used with 3 different leading edge sweeps: zero (rectangular planform), 20, and 45 degrees. Three different vortex generator heights were tested (0.05”, 0.1”, and 0.2”) to find the optimal vortex generator height relative to the local boundary layer thickness. The vortex generator angle of incidence relative to the freestream was …

Reduction Of Helmet Buffeting In Open Cockpit, Single Seat Race Cars, Mark Vallon

Master's Theses - Daytona Beach

At speeds approaching 240 mph, drivers of open cockpit race cars frequently experience large aerodynamic forces which act on the helmet. These forces, specifically the aerodynamic buffeting of the helmet, reach levels which are very fatiguing and distracting to the driver, and are therefore unacceptable. Little investigation has been done in this area, because normal wind tunnel tests do not isolate the helmet from the rest of the car. During this project, measurements of aerodynamic forces acting on a helmet inside a race car cockpit were made to determine the cause of the buffeting, and to determine possible improvements.

Tests …