A-11main

Supersonic aerodynamic unit A-11

Characteristics

Working channel dimensions: length – 500mm, width – 300mm, height – 250mm.

Range of velocities (Mach number): 1,2; 1,3; 1,75; 2,0; 2,5; 2,8

Reynolds Number on the line l=100mm: 2,2*1000000 to 1,5*10000000

Air temperature in the forechamber: 285-295K

Duration, min: 6

Description. Supersonic aerodynamic unit A-11 is a short time aerodynamic tube of ballon ejector type without a heater. It is supplied from low pressure balloons (5-7atm) and it provides steady modes for 6 minutes. Maximum Much Number is M=2,8, by means of removable nozzle inserts following values of Much Number are possible: 1,2; 1,3; 1,75; 2,0; 2,5; 2,8, as well as the flow modes of transonic and subsonic velocities. Reynolds Number on the line l=100 mm changes from 2,2*1000000 to 1,5*10000000. The working part size is 500x250x300 mm.

Equipment. The unit is provided with IAB-451, a high-speed video camera, an infrared window ZnSe, a thermal image camera, an ADC National Instruments, pressure sensors IKD, software was designed in the application package Labiew 7.0, Intel Pentium IV computer.

The research carried out on supersonic aerodynamic unit A-11.

Research on failure of friction/heat ratio (Reynolds analogy) on surfaces with complex “vortex formation” relief, flown round by supersonic air stream.

A general view of the working part (side) with IAB and a thermal image camera.

A view of the working part (top) with an installed infrared window and a thermal image camera.

A supersonic nozzle M=2,8.

A supersonic nozzle with the installed model in the working part.

Supersonic aerodynamic unit A-11
Characteristics Working channel dimensions: length – 500mm, width – 300mm, height – 250mm. Range of velocities (Mach number): 1,2; 1,3; 1,75; 2,0; 2,5; 2,8 Reynolds Number on the line l=100mm: 2,21000000 to 1,510000000 Air temperature in the forechamber: 285-295K Duration, min: 6
Description. Supersonic aerodynamic unit A-11 is a short time aerodynamic tube of ballon ejector type without a heater. It is supplied from low pressure balloons (5-7atm) and it provides steady modes for 6 minutes. Maximum Much Number is M=2,8, by means of removable nozzle inserts following values of Much Number are possible: 1,2; 1,3; 1,75; 2,0; 2,5; 2,8, as well as the flow modes of transonic and subsonic velocities. Reynolds Number on the line l=100 mm changes from 2,21000000 to 1,510000000. The working part size is 500x250x300 mm. Equipment. The unit is provided with IAB-451, a high-speed video camera, an infrared window ZnSe, a thermal image camera, an ADC National Instruments, pressure sensors IKD, software was designed in the application package Labiew 7.0, Intel Pentium IV computer.
The research carried out on supersonic aerodynamic unit A-11. Research on failure of friction/heat ratio (Reynolds analogy) on surfaces with complex “vortex formation” relief, flown round by supersonic air stream.

A general view of the working part (side) with IAB and a thermal image camera.	A view of the working part (top) with an installed infrared window and a thermal image camera.	A supersonic nozzle M=2,8.	A supersonic nozzle with the installed model in the working part.