转发资料 Data Acquisition System at Lockheed Aeronautics

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2. Upgrading the Coda Data Acquisition System at Lockheed Aeronautics 


Complex Aeronautical Systems are developed by Lockheed Aeronautics in Ft Worth, Texas. Their simulation and testing labs require hundreds of simultaneous channels of various bandwidths with multiple transducers types to be captured and displayed in real time. Customized real time displays and alarms are used to manage the testing and guide troubleshooting and design evaluation. 

 
F22 Raptor 
The Vehicle System Simulator (VSS), or 'Iron Bird,' is a unique test facility at Lockheed Martin Aeronautics Company in Fort Worth, Texas. The simulator allows the F- 22's hydraulic and electrical systems and all of their associated hardware (such as actuators) and control software to be tested under simulated flight conditions while on the ground.

Such ground-based testing significantly lowers program risk by allowing flight critical systems to be tested thoroughly before the airplane actually flies. It also reduces the complexity and cost of the flight test program for the developmental aircraft. The VSS can also be used to conduct tests that would be too dangerous to attempt on a flying airplane, such as dual engine flameouts and flight control actuator failures.

Prior to first flight, the VSS was used by Chief Test Pilot Paul Metz and the Mission Control Center crew to practice the flight. 

Problem: Provide extremely high channel count along with high speed data acquisition to allow engineering product performance analysis on complex systems.

Challenge: Leverage existing company resources and provide an upgrade path to future hardware with an open and constantly developing software solution with the ability to customize.

Solution: m+p Coda (Continuous Data Acquisition Software) is implemented to upgrade their existing hardware and provide enhanced capabilities and upgrade growth. Key features are listed below:

2 UNIX based system with over 700 channels each – consisting of dynamic and digital inputs upgraded to Windows. This solution preserves the hardware investment in the 
VXI based E1413 and z2404 modules along with providing an easy upgrade path to new LXI based acquisition hardware. 
Turnkey solution runs out of the box and requires no programming but allows customization and integration with existing process such as Time Code to sync with other systems. 
Unique solution allows adding LXI hardware to existing VXI hardware – a hybrid system that grows as the lab grows and expands. 
Lockheed developed channel calculations are implemented as virtual channels – allowing complex algorithms to be implemented in real time and used for alarm monitoring and viewing. 
Robust database design allows for extremely high channel count along with almost infinite time capture flexibility – data can be captured for seconds or weeks based on test requirements. 
Remote monitoring over TCI/IP in eavesdrop mode insures full bandwidth capture while providing customized views of the signals and events to a remote terminal for end users or customers to view ongoing testing in real time. 
Development resources were provided to add Lockheed specific enhancements and onsite support to aid installation and training making for a successful implementation.