HPGDDTS BENCH (intermittently operated supersonic wind tunnel)

Department of hydromechanical and vibration protection systems dynamics

Head of department – Academician of the National Academy of Sciences of Ukraine, D.Sc., Professor Oleg V. Pylypenko

Key specifications

Working gasair
Mach numberup to 3.0
Total pressure0.02 to 20 MPa
Stagnation temperature:300 to 800 K
• main flowatmospheric
• injection streams800 К
Starting time30 to 80 s
Scavenging air consumptionup to 10 kg/s
Air dew point218 К
1 — compressor
2 — air bottle battery
3 — feed pipelines
4 — T640 pressure regulator
5 — flow-measuring section
6 — control panel
7 — cutoff valve
8 — model placement location

Description

The HPGDDTS bench is a hiph-pressure gas-dynamic device testing system for the study of the thermodynamic characteristics of models of elements of space hardware and new technologies.

To form working flows with a wide range of characteristics, the bench is equipped with a set of flat and shaped nozzles and units. High-pressure air is fed to the settling chamber of the tunel and enters the models under study, the inlet pressure being set using a pressure regulator.

In experiments, clean and dry high-pressure air with a dew point of no more than 218 K is used. The maximum air flow rate is 4 kg/s. The duration of a test is 180 s. The air feed system and the test parameters are controlled remotely from the control panel. The bench has means for visualizing flows of different speeds using a variety of methods.

The bench is equipped with strain gage transducers to determine forces and moments and with a computer-aided measuring-and-computing and control complex.

Capabilities

The bench makes possible:

  • determination of the forces and moments produced by the models under study;
  • measurement of the pressure distribution over the model surface;
  • pulse actions onto working surfaces (shock tube regime);
  • jet flow control;
  • visualization of flows of different speeds using the shadow method, the interferometric method, the method of color visualizing coatings, the laser sheet technique, etc.

Advantages

  • The bench has two work places thus allowing two and more models to be prepared and tested;
  • The air fed to the bench can be heated using a self-contained heating system.

Use

The capabilities of the bench are used to advantage in experimental studies of models and units of space hardware and commercial equipment.

OFFICE ADDRESS:Institute of Technical Mechanics , 15 Leshko-Popelya St.
Dnipro 49005, Ukraine
PHONE NUMBER:+38-056-377-35-80
FAX NUMBER:+38-056-376-45-95
E-MAIL:imkask@email.dp.ua
imkask@ukr.net
Konovalov.M.A@nas.gov.ua

The “Technical Mechanics” Journal

Frequency: 4 times a year

Languages: Ukrainian, English

Editor-in-Chief: Oleg V. Pylypenko, Academician of the National Academy of Sciences of Ukraine

http://journal-itm.dp.ua/index.html