S3Ch - Transonic Wind Tunnel

RI-003
Wind Tunnel
Infrastructure
ONERA
Description

The S3Ch wind tunnel is a continuous closed-circuit transonic facility running at atmospheric pressure. The air temperature is nearly the ambiant, being maintained close to a constant value during the tests by using a thermal exchanger device. The air flow is ensured thanks to a two-stage motor-ventilator group of 3.5 MW with a compression ratio of 1.25.

The test section is a guided one with sidewalls equipped with high-quality windows and lower/upper rigid or deformable adaptive walls (to follow the flow streamlines curvature around the model). Moreover, the facility is equipped with a sonic throat downstream of the test section in order to avoid pressure perturbations around the model in transonic regime.

Typical testing for dual civil/military applications are:
# wing-pylon-nacelle interference
# air intake efficiency of aircrafts
# buffeting on a turbulent and/or laminar airfoil and/or wing
# afterbody drag budget and jet signature of powered missiles
# base buffeting at the afterbody of a launcher

Main technical characteristics

# Tunnel Square Test Section: 0.8m x 0.8m
# Test Section Length: 2.2m
# Stagnation pressure: atmospheric
# Stagnation temperature: ambient
# Mach number range: 0.2 – 1.3
# Maximum Reynolds Number/meter: 11.4 million

# Classical wall and field pressure / temperature (taps, probe, rake)
# Optical measurement techniques (PIV, LDV, uPSP, TSP, IR thermography)

Operational Capacity

6 hours x 5 days
(15-20 days maintenance stoppage per year)

Contact Information
www.onera.fr/en/daaa/technical-resources
Modane (France)
EREA

Privacy settings

You can change these settings at any time. However, this can result in some functions no longer being available. For information on deleting the cookies, please consult your browser’s help function.

This website will

  • Remember which cookies group you accepted
  • Essential: Remember your cookie permission setting
  • Essential: Allow session cookies
  • Essential: Gather information you input into a contact forms newsletter and other forms across all pages
  • Essential: Keep track of what you input in a shopping cart
  • Essential: Authenticate that you are logged into your user account
  • Essential: Remember language version you selected

This website won't

  • Remember your login details
  • Functionality: Remember social media settings
  • Functionality: Remember selected region and country
  • Analytics: Keep track of your visited pages and interaction taken
  • Analytics: Keep track about your location and region based on your IP number
  • Analytics: Keep track of the time spent on each page
  • Analytics: Increase the data quality of the statistics functions
  • Advertising: Tailor information and advertising to your interests based on e.g. the content you have visited before. (Currently we do not use targeting or targeting cookies)
  • Advertising: Gather personally identifiable information such as name and location

This website will

  • Remember which cookies group you accepted
  • Essential: Remember your cookie permission setting
  • Essential: Allow session cookies
  • Essential: Gather information you input into a contact forms newsletter and other forms across all pages
  • Essential: Keep track of what you input in a shopping cart
  • Essential: Authenticate that you are logged into your user account
  • Essential: Remember language version you selected
  • Functionality: Remember social media settings
  • Functionality: Remember selected region and country

This website won't

  • Analytics: Keep track of your visited pages and interaction taken
  • Analytics: Keep track about your location and region based on your IP number
  • Analytics: Keep track of the time spent on each page
  • Analytics: Increase the data quality of the statistics functions
  • Advertising: Tailor information and advertising to your interests based on e.g. the content you have visited before. (Currently we do not use targeting or targeting cookies)
  • Advertising: Gather personally identifiable information such as name and location

This website will

  • Remember which cookies group you accepted
  • Essential: Remember your cookie permission setting
  • Essential: Allow session cookies
  • Essential: Gather information you input into a contact forms newsletter and other forms across all pages
  • Essential: Keep track of what you input in a shopping cart
  • Essential: Authenticate that you are logged into your user account
  • Essential: Remember language version you selected
  • Functionality: Remember social media settings
  • Functionality: Remember selected region and country
  • Analytics: Keep track of your visited pages and interaction taken
  • Analytics: Keep track about your location and region based on your IP number
  • Analytics: Keep track of the time spent on each page
  • Analytics: Increase the data quality of the statistics functions

This website won't

  • Advertising: Tailor information and advertising to your interests based on e.g. the content you have visited before. (Currently we do not use targeting or targeting cookies)
  • Advertising: Gather personally identifiable information such as name and location

This website will

  • Remember which cookies group you accepted
  • Functionality: Remember social media settings
  • Functionality: Remember selected region and country
  • Analytics: Keep track of your visited pages and interaction taken
  • Analytics: Keep track about your location and region based on your IP number
  • Analytics: Keep track of the time spent on each page
  • Analytics: Increase the data quality of the statistics functions
  • Advertising: Tailor information and advertising to your interests based on e.g. the content you have visited before. (Currently we do not use targeting or targeting cookies)
  • Advertising: Gather personally identifiable information such as name and location

This website won't

  • Remember your login details
Save & Close