A5034225149- Wind and Air Flow Studies
- Meteorological Phenomena and Simulations
- Space Satellite Systems and Control
- Space Exploration and Technology
- Spacecraft Dynamics and Control
- Rocket and propulsion systems research
- Gas Dynamics and Kinetic Theory
- Aerospace and Aviation Technology
- Inertial Sensor and Navigation
- Fault Detection and Control Systems
- Target Tracking and Data Fusion in Sensor Networks
- Advanced Aircraft Design and Technologies
- Computational Fluid Dynamics and Aerodynamics
- Hydrology and Drought Analysis
- Probabilistic and Robust Engineering Design
- Aerodynamics and Fluid Dynamics Research
- Adaptive Control of Nonlinear Systems
- Machine Fault Diagnosis Techniques
- Structural Health Monitoring Techniques
- Wind Energy Research and Development
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
2019-2024
View Video Presentation: https://doi.org/10.2514/6.2022-1934.vid Active load alleviation systems are key to enabling the design of lighter structures by reducing structural loads. The ongoing development gust detection based on a Doppler lidar sensor has created opportunity powerful controllers with access wind field over 100 m ahead aircraft. present paper describes highly representative public benchmark for lidar-based alleviation. It is linear aeroservoelastic model Common Research Model...
In lidar-based gust load alleviation, the wind profile ahead of aircraft cannot be measured directly but has to reconstructed (estimated) based on acquired line-of-sight measurements. Such reconstruction algorithms typically include regularization in order adequately handle noise within data. This paper presents an empirical Bayesian approach choosing optimal parameters for any given set Using simulations flight through turbulence, is compared with a former (based engineering guess) and...
Preview control using wind estimates derived from Doppler lidar measurements is a promising technique for designing active gust load alleviation functions. Due to the relatively high noise levels in measurements, associated estimator must use some type of smoothing obtain usable estimate alleviation. In resulting estimate, this results loss information as well filtered and reduced component measurement noise. Taking losses into account during synthesis should help ease tuning procedure...
Abstract The German Aerospace Center (DLR) is currently studying different technologies for reusable launch vehicles (RLVs) to evaluate and compare their benefits. project CALLISTO (Cooperative Action Leading Launcher Innovation in Stage Toss-back Operations) investigates a VTVL (vertical takeoff, vertical landing) concept. In the DLR ReFEx (reusability flight experiment), context of which this paper presented, winged VTHL horizontal concept investigated develop key future RLV applications,...
This paper gives an overview of the proposed GNC architecture for DLR's Reusability Flight Experiment (ReFEx), which is split into two main subsystems: The Guidance and Control (G&C) subsystem, determines desired trajectory from current flight state to a designated target issues necessary commands actuators (canards rudder, as well reaction control system phases outside atmosphere) by calculating forces torques based on required changes velocity attitude following this trajectory; Hybrid...