• Altitude simulation to 90,000 ft
• Two engine test cells: PSL-3 and PSL-4
• Mach Number Range:
  • PSL-3: to 3.0
  • PSL-4: to 4.0
  • PSL-4: Freejet Mach No. with auxiliary heater - to 6.0
• Tied to central compressed air and exhaust systems
• Thrust measurement: 50,000 lbf horizontal axis, 15,000 lbf vertical and lateral axes

Combustion Air System

• Main Supply
  • 480 lbs/sec @ ambient temperature and 55 psia
  • 380 lbs/sec @ ambient temperature and 165 psia
  • 240 lbs/sec @ 1100°F and 165 psia
  • 380 lbs/sec @ -40°F and 25 psia (PSL-3)
  • 30 lbs/sec @ -90°F and 25 psia (PSL-4)
• Cooling Air Supply
  • 100 lbs/sec @ ambient temperature and 55 psia
  • 100 lbs/sec @ ambient temperature and 165 psia
  • 100 lbs/sec @ ambient temperature and 450 psia

Altitude Exhaust System

• Altitude Range: sea level standard to 90,000 ft
• Mass Flow: up to 750 lbs/sec

Support Systems

• Jet Fuel System: Two 25,000 gallon tanks supporting various types of fuel (JET-A, JP-4, JP-5, JP-8)
• Natural Gas system: 10 inch header @ 50 psig
• Gaseous Hydrogen System: 1 lb/sec @ 600 psig -- 3 lbs/sec @ 1100 psig, maximum pressure is 2400 psig
• Gaseous Oxygen System: 3 lbs/sec @ 1200 psig, 10 lbs/sec @ 400 psig, maximum pressure is 2400 psig
• Gaseous Nitrogen System: 132,000 scf @ 2400 psig
• Hydraulic System: 100 gpm @ 3000 psig
• High Pressure Hydraulic System: 100 gpm @ 6000 psig

Data Acquisition

• Steady State Acquisition
  Escort, the steady state data acquisition system, uses a DEC Alpha microprocessor to provide:
  • An X window based system
  • Real time on-line acquisition of analog signals
  • Conversion of raw 10Hz filtered digitized Neff data to engineering units
  • Computed performance calculations, which can be displayed in a variety of tabular and graphical formats.
  • Limit checking on all selected changes
  • 1 second update rate
  
  Escort can stand alone to meet all secure test requirements or it can be connected to a central processing cluster, which facilitates software application development, downloading of software, uploading and storage of facility tables, post processing of data and transmitting of data to a data collector for archival storage. ESP is an off the shelf electronically scanned pressure system. The system consists of numerous 32 port, rack mounted modules from +/-2.5 PSID to +500 PSID, located outside the test chamber. Each module has a check pressure to assure the module is performing correctly and can be calibrated in place using up to 5 highly accurate calibration pressures to maintain the overall system accuracy of +/-0.05% of range. This calibration is performed every 2 hours.
  
  Salient characteristics specific to the PSL data acquisition system are:
  • Accuracy for the Neff 400 is +/- 0.05% of range while the accuracy for the Neff 600 is +/- 0.02% of range + 2µv
  • 576 ports of electronically scanned pressures typically broken out as follows:
    • 256 +/- 15 PSID Barometric Ref
    • 224 +/- 45 PSID Barometric Ref
    • 32 each of +/-5, +/- 100 and +500 PSIF Barometric Ref
  • 736 Escort channels of which 588 are available for the test article
  • 480 temperatures from CA type thermocouples
  • 24 temperatures from type T
  • 24 temperatures from type R
  • Off-site access to data

• Transient Data Acquisition
  The transient data system provides multi-channel high speed digitized acquisition of rapidly changing cyclic on non-periodic impulse type events. The system consists of:
  
• A front end of Pacific filter/amplifiers with Butterworth anti aliasing filters (36 dB oct)
• A near real time display capabilty
• Off loading the data by FTPing, in near real time, to either our computer or yours for post processing
• 256 16 Bit A/D per channels (sample and hold per channel)
• Throughput of 1 million samples per second

Other Features

• Gas Analysis, Infrared Imaging, and Schlieren for Freejet Installations can be made available.
• Stringent Security Requirements