Hiroki Matsunaga1, Kotaro Matsumoto2, Hiroto Habu3, Makoto Kohga1
1 National Defense Academy of Japan, Yokosuka, Japan
2 Nihon University, Narashino, Japan
3 Japan Aerospace Exploration Agency, Sagamihara, Japan
Abstract. Ammonium dinitramide (ADN)-based high-energy ionic liquids (EILs) are promising as liquid rocket propellants for small satellites due to their high energy density and low vapor pressure. One of the most promising EIL candidates is obtained by mixing ADN with monomethylammonium nitrate and urea in a mass ratio of 4:4:2 (we call it AMU442). However, its ignitability has been a challenge. We successfully prepared an EIL with good ignitability and combustion characteristics by partially or completely replacing the urea in AMU442 with formyl hydrazide. Furthermore, we investigated the mechanism through condensed-phase reaction analysis based on simultaneous analysis of thermal behavior and evolved gases.
Keywords: ammonium dinitramide; energetic ionic liquid; rocket propellant; thermal decomposition; combustion
| ID: 66, Contact: Hiroki Matsunaga, hmatsunaga@nda.ac.jp | NTREM 2026 |