Rheology of HTPB Propellant: Effect of Mixing Speed and Mixing Time

  • Rm. Muthaiah Vikram Sarabhai Space Centre, Trivandrum
  • R. Manjari Vikram Sarabhai Space Centre, Trivandrum
  • V. N. Krishnamurthy Vikram Sarabhai Space Centre, Trivandrum
  • B. R. Gupta Indian Institute of Technology Kharagpur, Kharagpur
DOI: https://doi.org/10.14429/dsj.43.4328
Keywords: HTPB based propellant formulations, Pseudoplasticity

Abstract

The effect of mixer blade speed and mixing cycle time on the rheological behaviour of an optimized HTPB-based propellant formulations has been studied keeping the temperature constant. Variations in yield stress and viscosity at unit shear rate have been determined as a function of time for different mixing speeds. The effect of mixing on the extent of pseudoplasticity has been represented in the form of a bar chart. A correlation in terms of shear and yield stresses has been developed for viscosity index, i.e., the viscosity at unit shear rate as a function of mixer blade speed.

Author Biographies

Rm. Muthaiah, Vikram Sarabhai Space Centre, Trivandrum
Mr Rm Muthiah received MS in Fuel Engineering from University of Utah, USA in 1979. He joined VSSC, Trivandrum, in 1970 and has been working in R&D on solid propellants. He is involved in the successful development of composite propellants for SLV-3, ASLV and PSLV
missions. He is a Founder-life member of Trivandrum Regional Centre of the Indian Institute of Chemical Engineering (IIChE). Also, he is a member of High Energy Materials Society of India, and Astronautical Society ofIndia, Presently he is the Council member and Controller
of Examinations of IIChE.
R. Manjari, Vikram Sarabhai Space Centre, Trivandrum
Ms R Manjari graduated in Chemical Engineering in 1970 from Kerala University. She joined VSSC in 1971, and has worked on viscoelastic and rheological characterisation of propellants.She is a recipient of NRDC award in 1985 for 'Indigenous Development of Propellant System '.
She has published several papers in various journals.
V. N. Krishnamurthy, Vikram Sarabhai Space Centre, Trivandrum
Vikram Sarabhai Space Centre, Trivandrum.
B. R. Gupta, Indian Institute of Technology Kharagpur, Kharagpur
Rubber Technology Centre, Indian Institute of Technology, Kharagpur
Published
2013-01-01
How to Cite
Muthaiah, R., Manjari, R., Krishnamurthy, V., & Gupta, B. (2013). Rheology of HTPB Propellant: Effect of Mixing Speed and Mixing Time. Defence Science Journal, 43(2), 167-172. https://doi.org/10.14429/dsj.43.4328
Issue
Vol 43 No 2: Computer Application in Defence
Section
Aeronautical Systems
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