Rocket Performance of Red Fuming Nitric Acid with Blends of Norbornadiene, Carene and Cardanol

  • R. Chhibber Institute of Armament Technology, Pune
  • C. Prabhakaran Institute of Armament Technology, Pune
  • S. G. Kulkarni Institute of Armament Technology, Pune
  • S. P. Panda Institute of Armament Technology, Pune
Keywords: Fuel blends, Norbornadiene carene blend

Abstract

The fuel blends of nornornadiene and carene (50:50 by weight) and norbornadiene, carene and cardanol (40:40:20 by weight) exhibit synergistic hypergolic ignition with red fuming nitric acid (RFNA) as oxidiser. These fuel blends have been evaluated by theoretical calculations of performance parameters and subsequently verified by static firing in a 10 kg/sub f/ thruster at a chamber pressure of around 20 atm, using RFNA (with 21 per cent N/sub 2/O/sub 4/ by weight) as oxidiser. The theoretical calculations show maximum specific impulse and C*values at the O/F, 3 to be 227.8 s and 1598.7 m/s respectively for the norbornadiene-carene blend. The corresponding values for the norbornadiene, carene and cardanol blend were found to be 226.8 s and 1586.0 m/s respectively at the O/F, 4. For theoretical calculations, the chamber pressure (P/sub c) and the exit pressure (P/sub e/0 were assumed to be 20 and 1 atm, respectively. The static firing of the propellants in a 10 kg thruster exhibited smooth pressure-time curves with the experimental C* values in close agreement with those calculated and the non-deposition of carbon in the nozzle. This indicated low combustion instability and high combustion efficiency under rocket conditions (> 0.9). The fuel blends with their low cost and toxicity and relatively high density can replace G-fuel used in several Indian missiles without impairing the performance.

Author Biographies

R. Chhibber, Institute of Armament Technology, Pune
Lt R Chhibber is a Technical Officer in the Indian Navy. He underwent the Advanced Air Armament Course at IAT, Pune, leading to the award of ME (Mechanical) (Air Armament) degree of the University of Poona.
C. Prabhakaran, Institute of Armament Technology, Pune
Mr C Prabha karan is a Scientist a t lAT . Pune , He obtained his MSc in Chemistry from the University of Poo na. Presently, he is working in th e fie ld of synergistic hypergolicigntion for his Ph D. He has co-authored three research papers.
S. G. Kulkarni, Institute of Armament Technology, Pune
Dr SG Kulkarni is a Scientist at IAT, Pune. He obtained his PhD in Chemistry from the University of Poona. His major contributions are in the fields of hypergolic liquid and hybrid propellants, synergistic hyperg olic ignition, and fast neu tron activation analysis Of explosives and propellants. He has co-authored mor e than 30 research papers, published in both national and international journals.
S. P. Panda, Institute of Armament Technology, Pune
Dr SP Pa nda, Scie ntist F, IAT , Pu ne , current ly holds the posruon of Chairman , Faculty of Explosives and Applied Chemistry, at the Instit ute . He obtained his PhD in Chemistry from the University of Poona . His major contributions are in th e fields of polymerization in hypergolic propell ants , synergist ic hype rgo lic ignit ion, photncross linking of epoxides. unsurated polyesters and vinyl esters, applica tion of fast ne utron activation analysis and testing of explosive s and propellants.
Published
2013-01-01
How to Cite
ChhibberR., PrabhakaranC., KulkarniS., & PandaS. (2013). Rocket Performance of Red Fuming Nitric Acid with Blends of Norbornadiene, Carene and Cardanol. Defence Science Journal, 42(3), 165-171. https://doi.org/10.14429/dsj.42.4376
Section
Special Issue Papers