These are the full questions from the quiz. The book where you get the information from is called Understanding Space From section 14.1 and 14.2 AND 14.3.

The following questions are from chapter 14 of Understanding Space thE BOOK IS cALLED UNDERSTANDING SPACE.

• From Section 14.1 - Questions 3, 4, 6*, 9*, 10
• From Section 14.2 - Questions 45, 46, 58
• From Section 14.3 - Questions 63, 64, 65, 66*, 70*

Questions Start Below

11. Compare their relative advantages and disadvantages of bipropellant and monopropellant liquid-chemical rockets.

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12. Give an example of a hypergolic propellant combination.

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13.What is the advantage of hypergolics propellantsover non-hypergolics?

14. What is the operating principle of a solar sail?

15. Where does a solar sail's thrust come from? [thrust]

16. What are the two biggest differences affecting the design of launch vehicles versus spacecraft?

17. What unique challenges are presented by launch-vehicle propulsion subsystems versus spacecraft propulsion subsystems?

18. Give four examples of why a launch vehicle may need to throttle its rocket engines?

19. The first stage for a launch vehicle is designed to burn out at an altitude of 67,500 m. What would be the optimum design altitude (in km) for the rocket nozzle?

20. A two-stage rocket with the following characteristics must produce a total V of 8800 m/s

• I_sp stage 1 = 304 s
• I_sp stage 2 = 421 s
• Payload mass = 1000 kg
• Structure mass stage 1 = 11000 kg
• Structure mass stage 2 = 4444 kg

If the V for stage 2 is 5249 m/s, what is the vehicle's total mass at lift-off?