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8-Foot High-Temperature Tunnel Quick Facts

NASA workers placing Ray H. Wright into a diving suit.
8 Foot High Speed Tunnel: Ray H. Wright: Because the slots he was designing opened directly into the 8 foot High Speed Tunnel’s hazardous igloo-shaped test chamber, where high levels of pressure, temperature, and noise would be encountered, Ray H. Wright had to don a diving suit before venturing into the test section.

Quick Facts
Data Acquisition

The 8-Foot High Temperature Tunnel (HTT) simulates true enthalpy at hypersonic flight conditions for testing advanced, large-scale, flight-weight aerothermal, structural, and propulsion concepts. The facility provides combustion-heated hypersonic blowdown-to-atmosphere simulation for Mach numbers of 4, 5, and 7 through a range of altitude from 50,000 to 120,000 feet.

Speed: Mach 3, 4, 5, and 6.5

Reynolds Number: 0.44 – 5.09 x 106 per ft. [Mach dependent]

Pressure: 50-3,500 lbs. per sq. in. [Mach dependent]

Test Gas: Ambient atmosphere / methane mix

Test Section Size: 8-foot diameter

Length: 12 feet

Drive Power: 12,000 horsepower

8-Foot High Temperature Tunnel Fact Sheet

AETC Hypersonic Facilities

AETC Ground Facilities



Last Updated
Jul 20, 2023
Lillian Gipson