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About 5,013 papers for “flight test simulation”

Extending FMCS Test for Flight Simulation

Zhao Hui Li, Gang Li · Applied Mechanics and Materials · 2011

By means of a simulator we could expand the test research scope which could not be reached with flight tests, and recover and repeat some special domain of the test course, and make many kinds of experiments about FMCS properties, functions and with embedded failures by combining simulation tests with practical structure. The reliability and creditability of simulation results could be increased under real FMCS in conjunction with semi-entity simulation. Simulators combining a real FMCS with digital simulation have been used extensively for evaluating the large matrix of FMCS contents.

Cited by 0

Flight Control Simulation and Flight Test of Foldable Rotor UAV

Jiulong Xu, Yongping Hao, Shoutai Wang · Journal of Physics Conference Series · 2022

Abstract Aiming at the short endurance time of micro-rotor UAV, based on the analysis of the structural characteristics and the working principle of rotor UAV, a design scheme of foldable quad-rotor UAV based on c is proposed. The feasibility of cascade PID control method is verified by co-simulation and analysis with ADAMS dynamics simulation software and MATLAB. Through the comparison of the flight test results, the feasibility of the designed control algorithm for the attitude control of the foldable quadrotor UAV is verified. Flight test shows that the UAV can achieve foldable function on the basis of stable hovering and high flight, achieved good results.

Cited by 5Open access

Last call for the flight simulation test?

Luke Howard · European Respiratory Journal · 2013

Measuring PO 2 during flight simulation fails to predict which COPD patients develop complications during air travel http://ow.ly/nQ1Xo''Dear Colleague, Please see and advise on this patient with COPD who wishes to fly''.This is a common request from our non-respiratory colleagues and although we have guidelines to follow to assist in answering their queries, the evidence on which the guidelines are based is weak.The most recently published air travel recommendations are those from the British Thoracic Society (BTS) [1], which try to make some sense of the evidence and provide guidance based on expert consensus, but the recommendations for prescribing oxygen during a flight remain, at best, level C.Respiratory symptoms during flights are relatively common in studies of patients with COPD, with varying frequencies being reported, most likely depending on the method of recruitment.The UK Flight Outcomes Study [6] was a prospective study in which 243 patients with COPD took part (Global Initiative for Chronic

Cited by 12

Orion Pad Abort 1 Flight Test: Simulation Predictions Versus Flight Data

Merritt, Deborah S., Stillwater, Ryan Allanque · NASA STI Repository (National Aeronautics and Space Administration)

The presentation covers the pre-flight simulation predictions of the Orion Pad Abort 1. The pre-flight simulation predictions are compared to the Orion Pad Abort 1 flight test data. Finally the flight test data is compared to the updated simulation predictions, which show a ove rall improvement in the accuracy of the simulation predictions.

Cited by 0Open access

CTOL ski jump - Analysis, simulation, and flight test

John W. Clark, M. M. Walters · Journal of Aircraft · 1986

In the past several years, the ski-jump (ramp-assisted) launch concept has received considerable attention within the U.S. Navy. The specific goal was set (and achieved) to demonstrate through flight test the feasibility of, and quantify performance gains from, ski-jump launch of the T-2C, F-14A, and F/A-18A aircraft using a 100-ft ramp with variable end angles of 6 and 9 degs. The analysis, piloted simulation, performance predictions, and flight safety considerations leading to flight test, as well as a comparison of analytical predictions with flight test results for the three aircraft, are discussed. The developed analytical capability, although somewhat conservative, proved to be highly effective in preparation for, and support of, the flight test and in successfully predicting the 40-60% reduction in takeoff distance demonstration in flight test.

Cited by 4

An air-ground integrated flight test technical framework based on flight simulation

Yi Mi, Aijun Li, J. L. Chen et al. · Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University · 2024

In the modern civil transport aircraft flight test, flight test practitioners need to constantly improve the ability and reduce flight test cycle as much as possible, considering the relationship between flight test efficiency and flight test safety. In order to improve the real-time safety assessment ability of flight test monitoring personnel and reduce the increased test tasks due to safety considerations, a technical framework of air-ground integrated flight test according to the simulation results was proposed. Based on the conventional flight test monitoring system, the technical framework adds the flight test safety assessment model, air-ground data synchronization system and flight test telemetry data real-time processing functions. The overall framework is suitable for most flight test subjects, but the flight test safety assessment models need to carry out simulation requirements capture, scene analysis and model verification according to the flight test subjects requirements. Finally, taking crosswind landing flight test as an example, the basic application of air-ground integrated flight test technology is illustrated, which can provide reference for promoting the air-ground integrated flight test technology.

Cited by 0Open access

An air-ground integrated flight test technical framework based on flight simulation

Unknown, Unknown, Unknown et al. · Springer Link (Chiba Institute of Technology) · 2024

\nIn the modern civil transport aircraft flight test, flight test practitioners need to constantly improve the ability and reduce flight test cycle as much as possible, considering the relationship between flight test efficiency and flight test safety. In order to improve the real-time safety assessment ability of flight test monitoring personnel and reduce the increased test tasks due to safety considerations, a technical framework of air-ground integrated flight test according to the simulation results was proposed. Based on the conventional flight test monitoring system, the technical framework adds the flight test safety assessment model, air-ground data synchronization system and flight test telemetry data real-time processing functions. The overall framework is suitable for most flight test subjects, but the flight test safety assessment models need to carry out simulation requirements capture, scene analysis and model verification according to the flight test subjects requirements. Finally, taking crosswind landing flight test as an example, the basic application of air-ground integrated flight test technology is illustrated, which can provide reference for promoting the air-ground integrated flight test technology.\n

Cited by 0

VXI based solutions for flight controls test and simulation

K.F. Roosendaal · 2002

The rapid growth and evolution of VXI has provided new solutions to test and measurement applications. By providing multivendor standards, smaller size, and high performance, VXI has become an excellent platform for a variety of applications. VXI has proven to be a powerful and flexible solution for a new application involving the F-16 fighter aircraft.

Cited by 0

Modeling and Simulation of Flight Test for Avionics System

Xiaodi Li, Jing Li, Sha Xu et al. · 2020

The key factors of mission design and analysis during flight test for avionics system are introduced. A modeling framework for flight test is proposed and described with examples, which shows the feasibility of this method for optimizing the design of flight test.

Cited by 0

The Role of Simulation in Support of Flight Test

William M. Clark · 1993

The increasing flight hour costs that are associated with modern complex aircraft, have placed increasing emphasis on the use of simulation during flight test. There are many examples, both good and bad, of how simulation can effect developmental testing. Overall, the tester must ensure the simulation is validated and a safe logical build-up is used for all flight testing.

Cited by 2

Post-Flight Assessment of Low Density Supersonic Decelerator Flight Dynamics Test 2 Simulation

Queen, Eric M., White, Joseph P., Ivanov, Mark C. et al. · NASA STI Repository (National Aeronautics and Space Administration)

NASA's Low Density Supersonic Decelerator (LDSD) project conducted its second Supersonic Flight Dynamics Test (SFDT-2) on June 8, 2015. The Program to Optimize Simulated Trajectories II (POST2) was one of the flight dynamics tools used to simulate and predict the flight performance and was a major tool used in the post-flight assessment of the flight trajectory. This paper compares the simulation predictions with the reconstructed trajectory. Additionally, off-nominal conditions seen during flight are modeled in the simulation to reconcile the predictions with flight data. These analyses are beneficial to characterize the results of the flight test and to improve the simulation and targeting of the subsequent LDSD flights.

Cited by 0Open access

Compound Helicopter X3 in High-Speed Flight: Correlation of Simulation and Flight Test

Constantin Öhrle, Airbus Helicopters, Martin Embacher et al. · 2019

This work presents the correlation of simulation results and flight test data for a high-speed (V =220kts), high advance ratio (μ > 0.5) flight of the compound helicopter X3. The simulation tool chain consists of state-of-the-art coupling between the computational fluid dynamics (CFD) code FLOWer and the comprehensive analysis (CA) tool HOST. By applying a free-flight trim procedure, the experimental flight state is accurately represented in the simulation. The deviations of most trim controls is below 1° and the maximum deviation is less than 1.4°. The analysis of the high fidelity CFD results illustrates key features of the flow physics at this high advance ratio, such as wake interactions, reverse flow and advancing side loading. The correlation of rotor dynamics data between simulation and flight test is favorable. Good accordance is demonstrated for flap bending moments, torsion moments and pitch link loads. In contrast, the correlation is weaker for the chord bending moments for which it is shown that the interblade damper and drive train model mostly determine the structural loads.

Cited by 5

Verification of Simulation Results Using Scale Model Flight Test Trajectories

Jeff Obermark · 2004

Abstract : The objective of this effort was to compare limited amounts of scale model trajectory data with appropriate full-scale data. The scale model data was scaled up to equivalent full-scale conditions. Two Degree-of-Freedom (2-DOF) trajectories and calculated miss-distances were compared to full-scale data. Likely error sources in the scale test process were identified. Simulation was used to estimate the effects of these errors on the trajectory. Simulation trends were used to estimate the scale trajectory without these errors. A second compromise scaling law was investigated as a possible improvement. For ejector-driven events at minimum sideslip, the most important variables for scale model construction are the mass moment of inertia and ejector forces. For these events, the pitch motion and resulting miss-distance calculations correspond well with the full-scale events. Additional testing is required to enable a thorough uncertainty analysis of the scale model test data, especially for sideslip conditions.

Cited by 5