Browsing Department of Aeronautics and Astronautics by Title
Now showing items 310-329 of 503
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The Need for Command and Control Instant Message Adaptive Interfaces: Lessons Learned from Tactical Tomahawk Human-in-the-Loop Simulations
(CyberPsychology and Behavior, 2004)In the recent development of a human-in-the-loop simulation test bed designed to examine human performance issues for supervisory control of the Navy’s new Tactical Tomahawk missile, measurements of operator situation ... -
Network value concept in airline revenue management
([Cambridge, Mass. : Massachusetts Institute of Technology], Flight Transportation Laboratory, [1998], 1998)A connecting passenger occupies a seat on each of the flight leg of his itinerary. Moreover, for a given fare class, the fare of a connecting passenger is lower than the sum of the fares of the local passengers on the ... -
New directions for forecasting air travel passenger demand
(Cambridge, Mass. : Flight Transportation Laboratory, Dept. of Aeronautics and Astronautics, Massachusetts Institute of Technology, 1974, 1974)While few will disagree that sound forecasts are an essential prerequisite to rational transportation planning and analysis, the making of these forecasts has become a complex problem with the broadening of the scope and ... -
A new transformation and integration scheme for the compressible boundary layer equations, and solution behavior at separation
(c1983, c1983)A new coordinate and variable transformation for the two-dimensional boundary layer equations is presented. The normal coordinate is stretched with a scaling length determined by the local solution. The boundary layer ... -
Newton solution of steady two-dimensional transonic flow
(Cambridge, Mass. : Gas Turbine Laboratory, Massachusetts Institute of Technology, [1985], 1985)A new method is developed for the solution of the steady, two-dimensional Euler equations for transonic flows. The discrete steady-state equations are derived in conservative finite-volume form on an intrinsic streamline ... -
Noise and performance of propellers for light aircraft : final report
(Cambridge, Mass. : Gas Turbine & Plasma Dynamics Laboratory, Massachusetts Institute of Technology, [1980], 1980)Introduction and Summary: The project "Noise and Performance of Propellers for Light Aircraft," Contract #NASl-15154 between NASA Langley and MIT, has now been completed, and the main results obtained are summarized in ... -
Noise generation by shock-turbulence interaction
(Cambridge, Mass. : Gas Turbine Laboratory , Massachusetts Institute of Technology, [1970], 1970)The noise produced by convection of turbulence through an oblique shock wave has been measured and compared to theoretical predictions by Ribner and Kerrebrock. There is excellent agreement with the theoretical prediction ... -
Nonlinear Optics for Frequency-Doubling in Nanosatellite Laser Communication
(Utah State University Digital Commons, 2016-08-10)Free-space optical communication attracts interest due to its promise of higher data rates for similar size, weight, and power costs compared with radio systems. However, while satellite-to-ground optical communication has ... -
A numerical analysis of 3-D inviscid stator/rotor interactions using non-reflecting boundary conditions
(Cambridge, Mass. : Gas Turbine Laboratory, Massachusetts Institute of Technology, [1992], 1992)This dissertation presents a method for the computation of three-dimensional inviscid, transonic steady and unsteady flows, primarily in axial flow turbines. The work is divided into two major contributions. The first is ... -
A numerical analysis of 3-D inviscid stator/rotor interactions using non-reflecting boundary conditions
(Cambridge, Mass. : Gas Turbine Laboratory, Massachusetts Institute of Technology, [1992], 1992)This dissertation presents a method for the computation of three-dimensional inviscid, transonic steady and unsteady flows, primarily in axial flow turbines. The work is divided into two major contributions. The first is ... -
A numerical investigation of a flutter in a transonic fan
(Cambridge, Mass. : Gas Turbine Laboratory, Massachusetts Institute of Technology, [1996], 1996)The mechanism of the bending mode flutter of a modern transonic fan has been studied using a quasi-3D viscous unsteady code. The type of flutter in the scope of this research is that for a highly loaded blade with a tip ... -
Numerical Simulation of Hypersonic Flow Over a Blunt Leading Edge Delta Wing
(Aerospace Computational Design Lab, Dept. of Aeronautics & Astronautics, Massachusetts Institute of Technology, 1989-10)Euler and Navier-Stokes results are presented for a blunt delta wing at Mach 7.15 and 300 angle of attack. The viscous calculations were done at a Reynolds number based on chord of 5.85 x 106 with freestream and wall ... -
Oman 65th program, photos and letters
(2013-05-06)2009 Program, letters and photos from CM Oman's 65th birthday symposium -
On Approximate Dynamic Inversion
(2009-05-08)Approximate Dynamic Inversion has been established as a method to control minimum-phase, nonaffine-in-control systems [1]. In this report, we re-state the main results of [1], clarify some minor notational errors, and prove ... -
On Dual-Weighted Residual Error Estimates for p-Dependent Discretizations
(Aerospace Computational Design Laboratory, Dept. of Aeronautics & Astronautics, Massachusetts Institute of Technology, 2011-09-21)This report analyzes the behavior of three variants of the dual-weighted residual (DWR) error estimates applied to the p-dependent discretization that results from the BR2 discretization of a second-order PDE. Three error ... -
On the numerical solution of simultaneous, non-linear equations in computer-aided preliminary design
(Cambridge, Mass. : MIT, Dept. of Aeronautics & Astronautics, Flight Transportation Laboratory, c1986, c1986)In the solution of problems in preliminary design, it often becomes necessary to solve systems of equations. An immediate example from aeronautical design is the frequent need to perform several iterations around the gross ... -
On the theory of shear flow
(Cambridge, Mass. : Massachusetts Institute of Technology, Gas Turbine Laboratory, ©1966, ©1966)In this report are collected together some introductory notes on the theory of the three-dimensional, steady flow of an inviscid fluid. The equations of motion are discussed and transformed and expressions for the streamwise ... -
One Work Analysis, Two Domains: A Display Information Requirements Case Study
(HFES, 2012)d observations, among other techniques. Given the time and resources required, we examine how to generalize a work domain analysis technique, namely the hybrid Cognitive Task Analysis (hCTA) method across two domains in ... -
Operator Choice Modeling for UAV Visual Search Tasks
(IEEE Transactions, 2012-09)Unmanned aerial vehicles (UAVs) provide unprecedented access to imagery of possible ground targets of interest in real time. The availability of this imagery is expected to increase with envisaged future missions of one ... -
Operator Objective Function Guidance for a Real-time Unmanned Vehicle Scheduling Algorithm
(AIAA Journal of Aerospace Computing, 2012-12)Advances in autonomy have made it possible to invert the typical operator-to-unmanned-vehicle ratio so that asingle operator can now control multiple heterogeneous unmanned vehicles. Algorithms used in unmanned-vehicle ...
