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Low Density Wind Tunnel

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MOQ : 1 Unit

Low Density Wind Tunnel Specification

Equipment Type
Wind Tunnel Apparatus

Material
Mild Steel, Acrylic, Aluminium

Processing Type
Wind Flow Simulation

Condition
New

Technology
Subsonic/Low Density Airflow Simulation

Dimension (L*W*H)
Approx. 2400 mm x 600 mm x 900 mm

Power Mode
Electric

Voltage
220-240V AC, 50Hz

Power Consumption
1.5 kW to 3.5 kW (Depending on Model)

Pressure Output
Low Pressure-Variable (depending on speed settings)

Application
Aerodynamics Research, Educational Laboratory Experiments

Coating Type
Powder Coated for Corrosion Resistance

Accessories
Flow Visualization Smoke Generator, Test Section, Control Panel

Operating Temperature Range
10C to 40C

Safety Features
Emergency Stop, Protective Grilles

Airfoil Models
Interchangeable Models Supported

Working Speed
0 to 50 m/s adjustable

Observation Windows
Transparent Perspex on Test Chamber

Control System
Digital Velocity and Pressure Display

Fan Type
Variable Speed Axial Fan with Silencer

Frame Construction
Heavy Duty Welded Frame with Caster Wheels

Test Section Size
300 mm x 300 mm cross-section

Noise Level
<65 dB at maximum speed

About Low Density Wind Tunnel

Marketing Overview

Our low-density wind tunnel systems are designed to simulate high-altitude, rarefied gas environments encountered by spacecraft and re-entry vehicles. Operating in slip and transition flow regimes, these tunnels enable precise investigation of aerodynamics where conventional continuum assumptions no longer apply.

With advanced vacuum systems, cryogenic or free-jet flow generation, and specialized non-contact measurement techniques, the system supports cutting-edge research in rarefied gas dynamics, high-altitude flight physics, and thermal behavior under low-density conditions. Optimized for low-pressure operation and high Knudsen number simulation, it is an essential tool for aerospace and space research.

Technical Datasheet (Generalized Ranges)

1. System Classification

Flow Regime: Slip Flow & Transition Flow
Mach Number Range: 5 20+
Knudsen Number (Kn): ~0.01 10 (configurable for rarefied conditions)

2. Test Section Specifications

Type: Free-jet or enclosed (low-density optimized)
Typical Size: 0.01 m 0.5 m
Test Region: Small, uniform rarefied flow core

3. Flow Performance

Velocity Range: ~1500 m/s 6000+ m/s
Flow Uniformity: 2% 5% (typical for rarefied flows)
Reynolds Number: Very low (<< 10, depending on conditions)

4. Operating Conditions

Settling Chamber Pressure:
~0.001 bar 1 bar (significantly lower than conventional hypersonic tunnels)
Vacuum Level (Test Section):
Up to 10 10 bar
Temperature Ratio (Model Surface / Stagnation):
~0.06 1

5. Flow Generation System

Type:

Blowdown with high-capacity vacuum pumping
Free-jet expansion systems

Nozzle Design:

Cryogenic Laval nozzles
Small orifice nozzles for rarefied flow generation

6. Key Features

Large vacuum pumping and high sealing integrity
Reduced model size and test density
Specialized nozzle design for high Knudsen number flow
Lower heating requirements compared to conventional hypersonic tunnels

7. Thermal System

Heating Requirement: Moderate (to prevent liquefaction)
Temperature Range: 300 K 1500 K (typical, depending on test gas and setup)

8. Measurement & Instrumentation

(Specialized due to low signal levels)

Electromagnetic suspension balances (non-contact)
Electron beam diagnostic systems
Optical flow visualization techniques
High-sensitivity pressure and heat flux sensors
Advanced data acquisition systems

9. Applications

High-altitude spacecraft aerodynamics
Rarefied gas dynamics research
Re-entry physics at low density
Satellite and micro-scale vehicle testing
Fundamental research in non-continuum flow

10. Optional Configurations

Free-jet expansion tunnel
Cryogenic nozzle systems
Ultra-high vacuum systems
Specialized diagnostic tools for rarefied flows

11. Customization Options

Knudsen number range
Vacuum system capacity
Nozzle configuration and type
Test section geometry
Advanced non-contact instrumentation

Versatile Testing Capabilities

The wind tunnel's adjustable speed control and interchangeable airfoil models make it ideal for a wide range of aerodynamic simulations. The precision measurement offered by the digital velocity and pressure display supports detailed experimental analysis, suitable for both research and educational purposes.

Robust and Safe Construction

Constructed from powder-coated mild steel, acrylic, and aluminium, this apparatus is engineered for durability and corrosion resistance. Safety is prioritized through emergency stop functionality, protective grilles, and low-noise operation, creating a secure environment for users and observers.

User-Friendly Operation and Accessibility

The intuitive control panel and observation windows made from transparent Perspex enable effortless monitoring and management during tests. Heavy-duty caster wheels allow for easy relocation within laboratories, enhancing accessibility and workflow efficiency.

FAQ's of Low Density Wind Tunnel:

Q: How do I adjust the airflow speed in the wind tunnel?

A: The airflow speed can be easily adjusted using the digital control panel, which regulates the variable speed axial fan. This allows users to select and maintain speeds between 0 and 50 m/s depending on the experimental requirements.

Q: What applications is this wind tunnel suitable for?

A: This wind tunnel is ideal for both educational laboratory experiments and advanced aerodynamics research, providing accurate wind flow simulation for studies in subsonic, low-density airflow conditions.

Q: When should I use the interchangeable airfoil models?

A: Interchangeable airfoil models are recommended whenever you need to investigate or compare the aerodynamic responses of different shapes and configurations, enhancing the educational and analytical value of your experiments.

Q: Where can the wind tunnel apparatus be installed?

A: Thanks to its compact dimensions and wheeled heavy-duty frame, the wind tunnel can be easily installed in standard laboratories, research centers, or educational institutions where adequate electrical power and ventilation are available.

Q: What is the process for observing experiments within the test chamber?

A: Experiments can be closely monitored through the transparent Perspex observation windows. For enhanced visualization, the included smoke generator accessory can be used to highlight airflow patterns around test models during operation.

Q: How does the wind tunnel ensure user safety during operation?

A: This equipment incorporates several safety features, including an emergency stop button and protective grilles around moving parts. These measures help protect users from accidental contact and enable rapid shutdown in case of emergency.

Q: What are the main benefits of using this wind tunnel for aerodynamics research?

A: Key benefits include precise control over airflow conditions, quiet operation, versatility through interchangeable models, and robust, corrosion-resistant construction. These features facilitate comprehensive and reliable aerodynamic testing for both teaching and research purposes.

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