Space Propulsion

The main thing needed to get something into space is _.

​ (a)   is the energy expended against gravity (via the velocity the rocket must be able to achieve)

​ (b)   is the power of the rocket fuel (speed - and thus energy - it is capable of creating)

​ (c)   is the how much of a rocket's mass should be dedicated to fuel

• Delta V
• Exhaust Velocity
• Propellant Mass Fraction

Which of the following is not a type of chemical rocket?

• Solid

• Liquid

• Hybrid

• Cold Gas

• Thermal

Ion thrusters are

• electric rockets

• thermal rockets

• chemical rockets

• non-rockets

Solar sails are

• electric rockets

• thermal rockets

• chemical rockets

• non-rockets

Most space propulsion devices are

• electric rockets

• thermal rockets

• chemical rockets

• non-rockets

What is the purpose of staging in a multi-stage rocket?

• To provide a platform for astronauts to rest.

• To make the rocket look more impressive.

• To reduce weight and increase efficiency.

• To increase weight and decrease efficiency.

What is the escape velocity?

• The escape velocity is the force that pulls objects towards a planet or celestial body.

• The escape velocity is the minimum velocity an object needs to escape the gravitational pull of a planet or other celestial body.

• The escape velocity is the maximum velocity an object can reach within a planet's atmosphere.

• The escape velocity is the speed at which an object can travel through space.

What is the significance of the Tsiolkovsky rocket equation?

• It calculates the maximum payload capacity of a rocket.

• It determines the fuel efficiency of a rocket.

• It measures the thrust generated by a rocket engine.

• It relates the delta-v of a rocket to the exhaust velocity and the initial and final masses of the rocket.

What are rocket propellants made up of?

• Fuel and water

• Fuel and an oxidizer

• Oxygen and hydrogen

• Nitrogen and helium