Active collision avoidance manoeuvre design based on equidistant interpolation

Exoergic pathways triggered by O/H radicals in different metallic carbohydrazide perchlorates (M2+= Mn2+, Fe2+, Co2+, Ni2+, Zn2+and Cd2+)

“…[1][2][3][4] Compared with the pollution from heavy metals and the mechanical sensitivity of traditional primary explosives such as mercury fulminate or lead azide, 5,6 green energetic complexes are easier to synthesize with environmentfriendly properties and higher thermal stability; [7][8][9] examples include metallic carbohydrazide (CHZ) perchlorate, 10,11 metallic imidazole (IMI) perchlorate and metallic 1,5-diaminotetrazole (DAT) perchlorate. 3,12 As representative environment-friendly primary explosives, many metallic carbohydrazide perchlorate ([M(CHZ) 3 ](ClO 4 ) 2 , MCP) complexes have been synthesized in the last decade, including MnCP, 13 FeCP, 14 CoCP, 15 NiCP, 16 CuCP, 17 ZnCP, 18 CdCP 19 and CaCP, 20 generally with excellent fluidity and moderate sensitivity. 21 Moreover, no crystalline water is contained in each bulk structure, which ensures that the MCP releases as much energy as possible in the explosion.…”

“…As representative environment-friendly primary explosives, many metallic carbohydrazide perchlorate ([M(CHZ) 3 ](ClO 4 ) 2 , MCP) complexes have been synthesized in the last decade, including MnCP, 13 FeCP, 14 CoCP, 15 NiCP, 16 CuCP, 17 ZnCP, 18 CdCP 19 and CaCP, 20 generally with excellent fluidity and moderate sensitivity. 21 Moreover, no crystalline water is contained in each bulk structure, which ensures that the MCP releases as much energy as possible in the explosion.…”

“…We first optimized the gas-phase structures of the MCPs (M 2+ = Mn 2+ , Fe 2+ , Co 2+ , Ni 2+ , Zn 2+ and Cd 2+ ) to understand the metal–ligand coordination pathways. Then, the crystal structures of the MCPs obtained from the experimental XRD results 13–19 were optimized to explain the relationship between the energetic properties and electronic structures. Finally, we applied the CPMD method to simulate and compare the decomposition pathways of condensed phase CHZ [CHZ + (ClO 4 − )] and the MCPs (M 2+ = Mn 2+ , Fe 2+ , Co 2+ , Ni 2+ and Cd 2+ ; ZnCP has been studied previously 24 ) to understand how the central metal affects the ligands and anions in the exoergic process.…”

Synthesis, X-ray characterization, DFT calculations and Hirshfeld surface analysis studies of carbohydrazone based on Zn(ii) complexes

“…Carbohydrazone ligands have been also used to synthesize mononuclear Zn complexes. 9 The theoretical study reported herein is devoted to the analysis of the supramolecular assemblies observed in the solid state of compounds 3 and 4, evaluating the different contributions to molecular recognition and to assign discrete energy values to them. By means of high level DFT calculations and theoretical models we have studied these contributions in the crystal structures that are useful for the understanding of the noncovalent forces and for rationalizing their influence in the crystal packing paying special attention to the π-hole 10 and anion-π 11 interactions involving the nitrato ligand.…”

Adaptive time-varying sliding mode control for autonomous spacecraft rendezvous

“…Based on C W equations, many design methods for rendezvous control have been developed, such as the optimal impulsive ren dezvous approaches were proposed in [2] and [3]; the new switch control laws for active collision avoidance manoeuvre were given in [4]. All of the above control methods are open-loop control, which means that the control thrust is previously designed.…”