Running High Level Architecture in Real-Time for Flight Simulator Integration

Abstract

DLR's Air Vehicle Simulator (AVES) is designed such that interchangeable cockpits of an EC135 rotorcraft and an A320 airplane can be operated either on a motion or on a fixedbase platform. While the EC135 and the A320 simulators are usually deployed standalone, there are emerging requirements to conduct simulator experiments that both simulators are involved in. Further demands include adding a traffic server for computer generated aircraft and a tower simulator to the simulation facility. To tackle the challenge of developing a complex distributed network simulation, the High Level Architecture (HLA) and AviationSimNet are selected as the underlying standards. As the AVES is a flight simulation facility with hard real-time constraints, the chosen HLA implementation, which is CERTI from ONERA, has to fulfill the deterministic processing and data exchange requirements. CERTI had to be ported to the AVES's real-time operating system QNX, and integrated into the core software infrastructure, the AVES Software Development Kit. To prove the usability of the real-time implementation, the worst case transfer times are measured for typical scenarios in order to validate the solution. Finally, a full scale implementation is carried out in AVES. NomenclatureACT/FHS = Active Control Technology/Flying Helicopter Simulator ADS-B = Automatic Dependent Surveillance -Broadcast API = Advanced Technology Research Aircraft ATRA = Advanced Technology Research Aircraft AVES = Air Vehicle Simulator DIS = Distributed Interaction Simulation DLR = Deutsches Zentrum für Luft-und Raumfahrt e.V.

Flight Simulator Model Integration for Supporting Pilot-in-the-Loop Testing in Model-Based Rotorcraft Design

“…5 High Level Arhitecture (HLA) based distributed simulation capabilities allow the rotorcraft simulation to interact with external systems such as other flight simulators, a tower simulator or the Traffic Server. 33 The FHS Experimental System provides hardware-in-the-loop capabilities for flight test preparation for the EC135 ACT/FHS. 34 The Instructor Operator Station (IOS) provides the IOS Application to manage the simulator experiment and a Third Person View.…”

HSTPNSim: An educational simulator for multi‐disciplinary modeling for hybrid system

“…HLA provides a common, relatively independent support service program through the Run‐Time Infrastructure (RTI), which separates the simulation application from the underlying support environment, so that each part can be developed relatively independently . This method overcomes the shortcomings in interface‐based methods such as poor openness, lack of uniform standards, and difficulty in expansion , thus have been widely used in the collaborative operations of various units in the integrated combat simulation system for water, land, air, space, and internet . However, partial functions and model libraries are usually limited.…”

Modeling and Simulation for the Automation of Aerial Refueling of Military Transport Aircraft with the Probe-and-Drogue System

“…The simulation infrastructure designed for the FMTA-FMTA case is represented in the diagram of figure 10. The usual software architecture of the DLR AVES simulator [31][32][33] is used for the receiver aircraft and most of the software modules instantiated a second time for the tanker aircraft. The duplicated modules are identical for both aircraft, but have separated states such that both aircraft can be flown independently from each other.…”