NDLI: Mass spectrometric measurements of the freestream composition in the T4 free-piston shock-tunnel

Content Provider	Springer Nature Link
Author	Boyce, R. R. Takahashi, M. Stalker, R. J.
Copyright Year	2005
Abstract	The freestream composition is an important parameter in ground-based aerodynamic testing, and direct measurement of it is very important. This paper reports extensive composition measurements in the freestream of the T4 free-piston shock-tunnel, employing a recently improved time-of-flight mass spectrometer. A wide range of nozzle reservoir conditions were used. The results show good agreement between measured and theoretical values for nitric oxide over the entire enthalpy range reported (2.5–13 MJ/kg). This provides confidence that the chemistry model is correctly predicting sudden freezing of NO in the nozzle expansion. On the other hand, no monatomic species have been measured other than those produced by dissociative ionisation within the mass spectrometer, even at flow conditions where significant freestream dissociation is expected. Furthermore, excess diatomic oxygen is detected at high enthalpies. These observations are consistent with the possibility that oxygen recombination is not correctly predicted in the nozzle expansion, with sudden freezing occurring significantly later than predicted. However, the observations are also consistent with possible catalytic recombination in the skimmer system. The possibility for producing an empirical correlation between the freestream composition and the reservoir entropy has also been observed.
Starting Page	359
Ending Page	370
Page Count	12
File Format	PDF
ISSN	09381287
Journal	Shock Waves
Volume Number	14
Issue Number	5-6
e-ISSN	14322153
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-10-27
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Time-of-flight mass spectrometer Freestream species composition Shock tunnel Catalytic recombination Skimmer Fluids Thermodynamics Acoustics Condensed Matter Solid State Physics and Spectroscopy Mechanics, Fluids, Thermodynamics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Mechanical Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Mass spectrometric measurements of driver gas arrival in the T4 free-piston shock-tunnel

Performance of a detonation driven shock tunnel

Background oriented schlieren for flow visualisation in hypersonic impulse facilities

Tomographic reconstruction of shock layer flows

The effect of diaphragm opening time on the feasibility of tuned operation in free piston shock tunnels

Enhancement of shock waves

Report on the 17th International Shock Interaction Symposium

Regular versus Mach reflection for converging polygonal shocks

Shock wave diffraction on multi-facetted and curved walls

Mass spectrometric measurements of the freestream composition in the T4 free-piston shock-tunnel

Similar Documents

Mass spectrometric measurements of driver gas arrival in the T4 free-piston shock-tunnel

Performance of a detonation driven shock tunnel

Background oriented schlieren for flow visualisation in hypersonic impulse facilities

Tomographic reconstruction of shock layer flows

The effect of diaphragm opening time on the feasibility of tuned operation in free piston shock tunnels

Enhancement of shock waves

Report on the 17th International Shock Interaction Symposium

Regular versus Mach reflection for converging polygonal shocks

Shock wave diffraction on multi-facetted and curved walls

Mass spectrometric measurements of the freestream composition in the T4 free-piston shock-tunnel