In back-to-back failures, two of ISRO’s PSLV missions have malfunctioned during the third of four stages. In May last year, PSLV-61 experienced a drop in pressure in the propulsion chamber during the ...

This is why second- and third-stage rocket engines are different from those of the first stage. Aerospike technology uses a spike-shaped or plug-shaped engine with a curved design, enabling it to ...