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Articles 1 - 21 of 21
Full-Text Articles in Aerospace Engineering
Newton Versus Bernoulli: How Is Lift Created?, Nihad E. Daidzic
Newton Versus Bernoulli: How Is Lift Created?, Nihad E. Daidzic
Aviation Department Publications
FAA Safety Seminar (GL15109627) held on Saturday, April 2, 2022.
Pro Tips For Cfis: The Secret Life Of Stalls, Nihad E. Daidzic
Pro Tips For Cfis: The Secret Life Of Stalls, Nihad E. Daidzic
Aviation Department Publications
FAA Safety webinar (GL1590721) held online at 7:00 CST on Wednesday, January 5, 2022.
Mastering Uncoordinated Flight: Slips And Skids, Nihad E. Daidzic
Mastering Uncoordinated Flight: Slips And Skids, Nihad E. Daidzic
Aviation Department Publications
FAA Safety Webinar (GL15103784) held online at 9:00 CST on Saturday, April 10, 2021.
Advanced Concepts For Multiengine Airplane Flying, Nihad E. Daidzic
Advanced Concepts For Multiengine Airplane Flying, Nihad E. Daidzic
Aviation Department Publications
FAA Safety Webinar (GL15102159) held online at 9:00 CST on Saturday, November 21, 2020.
Nothing But A Number: A Closer Look At Stall Speed, Nihad E. Daidzic
Nothing But A Number: A Closer Look At Stall Speed, Nihad E. Daidzic
Aviation Department Publications
CFIS REPEAT IT LIKE A MANTRA: An airplane can stall at any airspeed, in any pitch attitude. Your trainer’s wing always stalls when it exceeds its critical angle of attack—and that can happen even if the airplane is pointed straight down and approaching VNE. So what do the stall speeds published in the pilot’s operating handbook mean? These only apply for the stated conditions: often level flight, maximum gross weight, and most forward center of gravity, with flaps retracted (VS1) or in the landing configuration (VS0). Factors such as total weight, load factor, power, and center of gravity location affect …
Control Failures And How To Deal With It, Nihad E. Daidzic
Control Failures And How To Deal With It, Nihad E. Daidzic
Aviation Department Publications
FAA Safety Seminar (GL1591497) held at Minnesota State University, Mankato Wiecking Center Auditorium at 18:00 CST on Thursday, April 18, 2019.
Flight Vehicle Design, Andrew Ning
Powered-Lift Aircraft Category: What Is It?, Nihad E. Daidzic
Powered-Lift Aircraft Category: What Is It?, Nihad E. Daidzic
Aviation Department Publications
FAA Safety Seminar (GL1574995) held at Minnesota State University, Mankato at 18:00 CST on Thursday, April 6, 2017.
Windswept: Tailwinds, Headwinds, Crosswinds - Oh My!, Nihad E. Daidzic
Windswept: Tailwinds, Headwinds, Crosswinds - Oh My!, Nihad E. Daidzic
Aviation Department Publications
No abstract provided.
Determining The Runway Point-Of-No-Return For Landing Roll Go-Around In Transport Category Airplanes, Nihad E. Daidzic
Determining The Runway Point-Of-No-Return For Landing Roll Go-Around In Transport Category Airplanes, Nihad E. Daidzic
Aviation Department Publications
No abstract provided.
Flight Dynamics Nonlinearity Assessment Across A New Aerodynamic Attitude Flight Envelope, Ayman Muhammad Abdallah
Flight Dynamics Nonlinearity Assessment Across A New Aerodynamic Attitude Flight Envelope, Ayman Muhammad Abdallah
Mechanical & Aerospace Engineering Theses & Dissertations
A new asymmetric level aerodynamic attitude flight envelope is introduced in this dissertation. The aerodynamic attitude envelope is an angle of attack vs. sideslip angle region which describes the extent of where an aircraft can sustain a steady slipping horizontal flight condition. The new envelope is thus an extension of the more common speed-altitude symmetric level flight envelope. This new envelope can be used for design requirements, dynamic analysis, control synthesis, or performance comparison. Moreover, this envelope provides enhanced insight into trimability-controllability limitations within the aircraft design model. The aerodynamic attitude flight envelope is constructed for a six degree of …
Erau Spring 2013 Newsletter, Paul Eschenfelder
Erau Spring 2013 Newsletter, Paul Eschenfelder
Paul F. Eschenfelder
No abstract provided.
Airplane Landing Flare-The Last 5 Seconds, Nihad E. Daidzic
Airplane Landing Flare-The Last 5 Seconds, Nihad E. Daidzic
Aviation Department Publications
No abstract provided.
Dealing With Contaminated Runways, Nihad E. Daidzic
Dealing With Contaminated Runways, Nihad E. Daidzic
Aviation Department Publications
No abstract provided.
Birdstrike Mitigation - Beyond The Airport, Paul Eschenfelder, Russ Defusco
Birdstrike Mitigation - Beyond The Airport, Paul Eschenfelder, Russ Defusco
Paul F. Eschenfelder
No abstract provided.
Houchin, Roy Franklin, Ii, B. 1954 (Sc 1602), Manuscripts & Folklife Archives
Houchin, Roy Franklin, Ii, B. 1954 (Sc 1602), Manuscripts & Folklife Archives
MSS Finding Aids
Finding aid and scans (Click on "Additional Files" below) for Manuscripts Small Collection 1602. Typescripts of interviews conducted by Roy Franklin Houchin, II with: Joe Richardson regarding early aviation and the aerospace industry, Douglas Campbell regarding his World War I aerial combat experience, and Bob Ford regarding World War I military uniforms. Includes Houchin family information.
Forest Products Laboratory: Supporting The Nation's Armed Forces With Valuable Wood Research For 90 Years, Christopher D. Risbrudt, Robert J. Ross, Julie J. Blankenburg, Charles A. Nelson
Forest Products Laboratory: Supporting The Nation's Armed Forces With Valuable Wood Research For 90 Years, Christopher D. Risbrudt, Robert J. Ross, Julie J. Blankenburg, Charles A. Nelson
Julie Blankenburg
Founded in 1910 by the U.S. Forest Service to serve as a centralized, national wood research laboratory, the USDA Forest Products Laboratory (FPL) has a long history of providing technical services to other government agencies, including those within the Department of Defense (DoD). A recent search of FPL’s library and correspondence files revealed that approximately 10,000 articles, reports, manuals, other technical publications, and communications have been generated and provided to the DoD since 1910. FPL has provided support on a broad array of technical questions—from designporting materiel to Europe and the South Pacific during World War II to assisting in …
Three-Dimensional Aerodynamic Design Optimization Using Discrete Sensitivity Analysis And Parallel Computing, Amidu Olawale Oloso
Three-Dimensional Aerodynamic Design Optimization Using Discrete Sensitivity Analysis And Parallel Computing, Amidu Olawale Oloso
Mechanical & Aerospace Engineering Theses & Dissertations
A hybrid automatic differentiation/incremental iterative method was implemented in the general purpose advanced computational fluid dynamics code (CFL3D Version 4.1) to yield a new code (CFL3D.ADII) that is capable of computing consistently discrete first order sensitivity derivatives for complex geometries. With the exception of unsteady problems, the new code retains all the useful features and capabilities of the original CFL3D flow analysis code. The superiority of the new code over a carefully applied method of finite-differences is demonstrated.
A coarse grain, scalable, distributed-memory, parallel version of CFL3D.ADII was developed based on "derivative stripmining". In this data-parallel approach, an identical copy …
Sensitivity Analysis And Optimization Of Aerodynamic Configurations With Blend Surfaces, Almuttil Mathew Thomas
Sensitivity Analysis And Optimization Of Aerodynamic Configurations With Blend Surfaces, Almuttil Mathew Thomas
Mechanical & Aerospace Engineering Theses & Dissertations
A novel (geometrical) parametrization procedure using solutions to a suitably chosen fourth order partial differential equation is used to define a class of airplane configurations. Inclusive in this definition are surface grids, volume grids, and grid sensitivity. The general airplane configuration has wing, fuselage, vertical tail and horizontal tail. The design variables are incorporated into the boundary conditions, and the solution is expressed as a Fourier series. The fuselage has circular cross section, and the radius is an algebraic function of four design parameters and an independent computational variable. Volume grids are obtained through an application of the Control Point …
Numerical Simulation Of Turbulent Flows Past Three-Dimensional Cavities, Shivakumar Srinivasan
Numerical Simulation Of Turbulent Flows Past Three-Dimensional Cavities, Shivakumar Srinivasan
Mechanical & Aerospace Engineering Theses & Dissertations
Computations have been performed to simulate turbulent supersonic, transonic, and subsonic flows past three-dimensional deep, transitional, and shallow cavities. Simulation of these self sustained oscillatory flows has been generated through time accurate solutions of Reynolds averaged full Navier-Stokes equations using the explicit MacCormack scheme. The Reynolds stresses have been modeled, using the Baldwin-Lomax algebraic turbulence model with certain modifications. The computational results include instantaneous and time averaged flow properties everywhere in the computational domain. Time series analyses have been performed for the instantaneous pressure values on the cavity floor. Comparison with experimental data is made in terms of the mean …
Analytic And Experimental Studies Of A True Airspeed Sensor, Joseph Yao-Cheng Shen
Analytic And Experimental Studies Of A True Airspeed Sensor, Joseph Yao-Cheng Shen
Mechanical & Aerospace Engineering Theses & Dissertations
The objective of this study was to analyze and design a true airspeed sensor which will replace the conventional pitot-static pressure transducer. This sensor should have the following characteristics: the flow phenomenon is vortex procession, or the "vortex whistle", it should have no moving parts, and also is to be independent of temperature, density, altitude or humidity changes. This sensor has been designed mainly for small commercial aircraft with the airspeed up to 321.9 km/hr (200 mph).
In an attempt to model the complicated fluid mechanics of the vortex precession, three-dimensional, inviscid, unsteady, incompressible fluid flow was studied by using …