Wind tunnel T-107

Basic parameters

Flow M number	0.1 - 0.86
Re number per 1 m	up to 14.5∙10⁶
Total pressure	atmospheric
Dynamic pressure	up to 35 kPa
Stagnation temperature	280 - 323 K
Angle of attack (α) range	−8° up to14.5°
Primary suspension	arrow-like band suspension
Run duration	continuous
Test section sizes:
Cross-Section diameter	2.7 m
Test section length	3.5 m
Tested object sizes:
Length	up to 2.2 m
Wingspan	up to 1.8 m
Wing area	up to 0.5 m²
Weight	up to 200 kg

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General description

T-107 Wind Tunnel is an atmospheric continuous operation closed-loop facility that is equipped with four-component electro-mechanical balance to measure the aerodynamic forces and moments that affect the model. The WT is assigned to research (by use of specialized fan testing device) the high-speed fans, aircraft models and their components aerodynamic characteristics.

Capabilities

T-107 WT provides the following experimental studies to be carried out:

Assessment of single fan and birotating coaxial fans aerodynamic characteristics by VP-107 Device;

Assessment of total models aerodynamic coefficients by mechanical balance and strain gage one;

Assessment of pressure distribution by drain ports;

Physical researches (method of kaolin covering, oil film etc.);

Other types of physical researches.

Technological advantages

The only test-bench in TsAGI assigned to test the high-speed fans (bi-rotary ones including) at cruising flight.
Low test-costs due to lower drive power and air-cooling.
Low level of flow initial vorticity.
Application of band suspension enables the minimal model geometry distortion.

Practical application

It is in T-107 WT where propulsions for such aircraft as Tu-95, An-22, An-70 and so on were enhanced. The total amount of cruising flight regimes tests within DREAM European FP7 was carried out in this WT. The thrust and moment characteristics of high-speed bi-rotary fans, the blades loads, blades strain, distribution of blade pressure, near-field blade noise and engine pylon influence were investigated. The helicopters profiles characteristics were studied.