Taxiing, Take-Off, and Landing Simulation of the High Speed Civil Transport Aircraft

Taxiing, Take-Off, and Landing Simulation of the High Speed Civil Transport Aircraft
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
Total Pages: 48
Release: 2018-06-11
Genre:
ISBN: 9781721012183
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The aircraft industry jointly with NASA is studying enabling technologies for higher speed, longer range aircraft configurations. Higher speeds, higher temperatures, and aerodynamics are driving these newer aircraft configurations towards long, slender, flexible fuselages. Aircraft response during ground operations, although often overlooked, is a concern due to the increased fuselage flexibility. This paper discusses modeling and simulation of the High Speed Civil Transport aircraft during taxiing, take-off, and landing. Finite element models of the airframe for various configurations are used and combined with nonlinear landing gear models to provide a simulation tool to study responses to different ground input conditions. A commercial computer simulation program is used to numerically integrate the equations of motion and to compute estimates of the responses using an existing runway profile. Results show aircraft responses exceeding safe acceptable human response levels.Reaves, Mercedes C. and Horta, Lucas G.Langley Research CenterAIRCRAFT PERFORMANCE; COMPUTERIZED SIMULATION; FINITE ELEMENT METHOD; LANDING SIMULATION; SUPERSONIC TRANSPORTS; TAKEOFF; TAXIING; AIRFIELD SURFACE MOVEMENTS; DYNAMIC RESPONSE; MATHEMATICAL MODELS; FLIGHT CHARACTERISTICS; TRANSPORT AIRCRAFT; EQUATIONS OF MOTION; AIRCRAFT LANDING; COMMERCIAL AIRCRAFT; LANDING GEAR; NUMERICAL INTEGRATION; VIBRATION MODE

High Speed Civil Transport Aircraft Simulation

High Speed Civil Transport Aircraft Simulation
Author: National Aeronautics and Space Adm Nasa
Publisher:
Total Pages: 82
Release: 2018-09-23
Genre:
ISBN: 9781723955945
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The mathematical model and associated code to simulate a high speed civil transport aircraft - the Boeing Reference H configuration - are described. The simulation was constructed in support of advanced control law research. In addition to providing time histories of the dynamic response, the code includes the capabilities for calculating trim solutions and for generating linear models. The simulation relies on the nonlinear, six-degree-of-freedom equations which govern the motion of a rigid aircraft in atmospheric flight. The 1962 Standard Atmosphere Tables are used along with a turbulence model to simulate the Earth atmosphere. The aircraft model has three parts - an aerodynamic model, an engine model, and a mass model. These models use the data from the Boeing Reference H cycle 1 simulation data base. Models for the actuator dynamics, landing gear, and flight control system are not included in this aircraft model. Dynamic responses generated by the nonlinear simulation are presented and compared with results generated from alternate simulations at Boeing Commercial Aircraft Company and NASA Langley Research Center. Also, dynamic responses generated using linear models are presented and compared with dynamic responses generated using the nonlinear simulation.Sotack, Robert A. and Chowdhry, Rajiv S. and Buttrill, Carey S.Langley Research CenterSUPERSONIC TRANSPORTS; TRANSPORT AIRCRAFT; BOEING AIRCRAFT; CIVIL AVIATION; AIRCRAFT MODELS; MATHEMATICAL MODELS; COMPUTERIZED SIMULATION; ALGORITHMS; AERODYNAMIC CHARACTERISTICS; DYNAMIC RESPONSE; FLIGHT CONTROL; CONTROL SYSTEMS DESIGN; LANDING GEAR; NONLINEAR EQUATIONS; EQUATIONS OF MOTION; UNSTEADY FLOW; STEADY FLOW...

Piloted Simulation Assessment of a High-Speed Civil Transport Configuration

Piloted Simulation Assessment of a High-Speed Civil Transport Configuration
Author:
Publisher:
Total Pages: 484
Release: 2002
Genre: Airplanes
ISBN:
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An assessment of a proposed configuration of a high-speed civil transport was conducted by using NASA and industry research pilots. The assessment was conducted to evaluate operational aspects of the configuration from a pilot's perspective, with the primary goal being to identify potential deficiencies in the configuration. The configuration was evaluated within and at the limits of the design operating envelope to determine the suitability of the configuration to maneuver in a typical mission as well as in emergency Or envelope-limit conditions. The Cooper-Harper rating scale was used to evaluate the flying qualities of the configuration. A summary flying qualities metric was also calculated. The assessment was performed in the Langley six-degree-of-freedom Visual Motion Simulator. The effect of a restricted cockpit field-of-view due to obstruction by the vehicle nose was not included in this study.

Maintaining U.S. Leadership in Aeronautics

Maintaining U.S. Leadership in Aeronautics
Author: National Research Council
Publisher: National Academies Press
Total Pages: 148
Release: 1998-10-07
Genre: Technology & Engineering
ISBN: 0309184924
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After the completion of the National Research Council (NRC) report, Maintaining U.S. Leadership in Aeronautics: Scenario-Based Strategic Planning for NASA's Aeronautics Enterprise (1997), the National Aeronautics and Space Administration (NASA) Office of Aeronautics and Space Transportation Technology requested that the NRC remain involved in its strategic planning process by conducting a study to identify a short list of revolutionary or breakthrough technologies that could be critical to the 20 to 25 year future of aeronautics and space transportation. These technologies were to address the areas of need and opportunity identified in the above mentioned NRC report, which have been characterized by NASA's 10 goals (see Box ES-1) in "Aeronautics & Space Transportation Technology: Three Pillars for Success" (NASA, 1997). The present study would also examine the 10 goals to determine if they are likely to be achievable, either through evolutionary steps in technology or through the identification and application of breakthrough ideas, concepts, and technologies.