10+ Skyroot Aerospace Interview Questions and Answers

The pipe with 10mm diameter carrying Nitrogen will have higher mass flow rate due to higher density. The pipe with 8mm diameter carrying Helium will have higher volume flow rate due to lower density.

• Nitrogen has a higher density than Helium, so the pipe with 10mm diameter will have higher mass flow rate

• Helium has a lower density than Nitrogen, so the pipe with 8mm diameter will have higher volume flow rate

The pipe with the highest flow rate for the lowest diameter (4mm) will fill the tank fastest.

• The pipe with the smallest diameter (4mm) will have the highest flow rate for water flow.

• Smaller diameter pipes have higher flow rates due to higher velocity of water flow.

• Therefore, the 4mm diameter pipe will fill the tank fastest compared to the 5mm and 8mm diameter pipes.

Pressure ratio for chocking condition is the critical pressure ratio at which the flow of a fluid becomes choked.

• The pressure ratio for chocking condition is the ratio of the outlet pressure to the inlet pressure at which the flow becomes choked.

• It is a critical parameter in the design of nozzles, valves, and other flow control devices.

• For air flowing through a nozzle, the pressure ratio for chocking condition is approximately 0.528.

Stress is the force applied to a material, while strain is the resulting deformation or change in shape.

• Stress is the internal resistance of a material to deformation under an applied force.

• Strain is the measure of deformation or change in shape of a material in response to stress.

• Stress is typically measured in units of force per unit area (such as Pascals), while strain is dimensionless.

• The relationship between stress and strain is described by the material's modulus of ela...read more

Forces acting on a rocket include thrust, weight, drag, and lift.

• Thrust is the force propelling the rocket forward.

• Weight is the force pulling the rocket down due to gravity.

• Drag is the resistance force acting opposite to the rocket's motion.

• Lift is the aerodynamic force generated by the rocket's shape to counteract weight.

• Other forces may include gravity, air resistance, and external forces.

Ductile materials exhibit large deformation before failure, while brittle materials fail suddenly without significant deformation.

• Ductile materials show a gradual increase in stress followed by necking before failure.

• Brittle materials have a steep stress-strain curve and fail abruptly without warning.

• Examples of ductile materials include metals like copper and aluminum.

• Examples of brittle materials include ceramics and glass.

Chocking is a condition where a fluid flow is restricted or blocked due to an obstruction in a pipe or duct.

• Chocking can occur in various systems such as hydraulic systems, pneumatic systems, and ventilation systems.

• It can lead to pressure build-up, flow restriction, and potential damage to the system.

• Examples include a clogged pipe causing water flow restriction or a blocked air duct affecting ventilation.

• Chocking can be prevented by regular maintenance and monitoring of the...read more

Viscosity is a measure of a fluid's resistance to flow.

• Viscosity is often described as the thickness or stickiness of a fluid.

• It is influenced by factors such as temperature and pressure.

• High viscosity fluids flow slowly, while low viscosity fluids flow quickly.

• Examples of high viscosity fluids include honey and molasses, while water has low viscosity.

Stress strain curve shows the relationship between stress (force applied) and strain (resulting deformation) in a material.

• Stress strain curve is a graphical representation of how a material behaves under loading.

• It typically shows the stress on the y-axis and strain on the x-axis.

• The curve usually consists of three main regions: elastic deformation, plastic deformation, and fracture.

• Elastic deformation is the initial linear region where the material returns to its original s...read more