Sandia National Laboratories Trisonic Wind Tunnel TWT

1
Sandia National LaboratoriesTrisonic Wind Tunnel
(TWT)

• Technical Characteristics
• Blowdown to atmosphere
• M8 0.5 - 1.3, 1.5, 2.0, 2.5, 3.0
• Re 3 - 20 106 /ft
• Run times 20 - 120 seconds at 20 - 30 minute
  intervals
• 12" 12" test section
• 1" diameter model size
• Transonic Test Section
• Three configurations
• 4 porous walls
• 2 porous walls, 2 solid walls
• 4 solid walls
• Test section enclosed in pressurized plenum

Sandia is a multiprogram laboratory operated by
Sandia Corporation, a Lockheed Martin
Company,for the United States Department of
Energys National Nuclear Security
Administration under contract DE-AC04-94AL85000.
2
Sandia National LaboratoriesHypersonic Wind
Tunnel (HWT)

• Technical Characteristics
• Blowdown to vacuum
• M8 5, 8, 14
• Re 0.2 - 10 x 106 /ft
• Run times 45 sec at 45 minute intervals
• Gases
• air at Mach 5
• N2 at Mach 8 and 14
• 18" diameter test section
• 4" - 5" maximum diameter model size
• Stagnation temperature to 2500R

3
Sandia National LaboratoriesHigh Altitude
Chamber (HAC)

• Technical Characteristics
• 27 foot diameter vacuum sphere
• Simulate altitudes up to 230,000 ft
• Test articles up to 1 ton weight and 60 inch
  diameter
• Testing centrifuge to 600 rpm
• 15-20 minutes to reach maximum altitude

4
Sandia National LaboratoriesInstrumentation

• Traditional Aerodynamic
• Internal strain-gage balances
• Surface pressure transducers
• Pitot probes and rakes
• Schlieren photography
• Model spin testing
• Heat transfer gages
• Laser-Based Instrumentation
• Laser Doppler Velocimetry
• Particle Image Velocimetry
• Laser-Induced Fluorescence
• Filtered Rayleigh Scattering