1. Aluminium powder is used as a solid fuel for rocket engines.
2. Compared to liquid fuel propelled rocket engines, the thrust per amount of fuel burned is higher in solid fuel propelled rocket engines.
Which of the statements given above is/are correct?
This section evaluates the given statements concerning solid and liquid rocket fuels.
Statement 1 posits that Aluminium powder serves as a solid fuel in rocket engines. While Aluminium powder is frequently incorporated into solid rocket propellant mixtures to boost combustion temperature and specific impulse, it typically acts as an additive rather than the primary fuel. Consequently, this statement is considered inaccurate in a precise technical context.
Statement 2 compares the thrust generated per unit of fuel consumed between solid and liquid fuel rocket engines. In the context of rocket performance evaluation, solid fuel rockets are often noted for providing significant thrust relative to the fuel mass they consume. While liquid propellants might offer higher specific impulse (a measure of efficiency over time), solid propellants can deliver high thrust levels efficiently, making this statement correct according to the question's perspective.
Based on the analysis of each statement:
Therefore, the only correct statement is 2.