A) UDMH and dinitrogen tetroxide B) Hydrazine and nitric acid C) Liquid oxygen and RP-1 D) Liquid oxygen and ethanol
A) Lower toxicity levels for crew B) Availability of water resources on Mars C) Production via Zirconia electrolysis from the Martian atmosphere D) Higher specific impulse compared to kerosene
A) V-2 rocket B) Robert Goddard's first liquid rocket C) Redstone rocket D) Falcon 9
A) Falcon 9 B) Titan I C) V-2 (A4) D) Saturn V
A) Hypergolic B) Cryogenic C) Solid-state D) Inert
A) Nitric acid and kerosene B) T-Stoff and C-Stoff C) LOX and RP-1 D) UDMH and dinitrogen tetroxide
A) Liquid oxygen and RP-1 B) Aerozine 50 and nitric acid C) High-test peroxide and kerosene D) Monomethylhydrazine and dinitrogen tetroxide
A) They have low specific impulse B) They are highly toxic C) They are too expensive to manufacture D) Evaporation leads to fuel loss
A) Liquid oxygen and RP-1 B) Liquid oxygen and ethanol C) Nitric acid and UDMH D) Aerozine 50 and dinitrogen tetroxide
A) Falcon 9 B) Redstone C) Saturn V D) Proton
A) 50% UDMH and 50% hydrazine B) 100% UDMH C) 100% hydrazine D) 50% kerosene and 50% hydrazine
A) They do not require ignition systems B) They are cheaper to store C) They provide higher specific impulse D) Hydrazine-based propellants are toxic and carcinogenic
A) Proton B) Scud-A C) Titan 2 D) Falcon 1
A) 400 s B) 300 s C) 350 s D) 250 s
A) Bipropellant B) Hybrid C) Tripropellant D) Monopropellant
A) Eliminate the need for an oxidizer B) Increase the weight of the rocket C) Control the magnitude of thrust D) Change the type of fuel used mid-flight
A) Controlled shutdown during an emergency B) Resistance to high temperatures C) Lack of toxic exhaust D) Complete immunity from explosions
A) The excessive weight of the combustion chamber B) The increased air resistance at high speeds C) The shifting of the center of mass rearward D) The structural weakness of the engine nozzle
A) Adding solid ballast B) Slosh baffles C) Increased fuel pressure D) Thickening the tank walls
A) The cooling phase before launch B) The process of engine ignition C) A method to restart the engine D) Uncommanded cycles of acceleration
A) Freezing it into ice that can block seals B) Causing the fuel to evaporate too quickly C) Converting it into an explosive fuel D) Increasing the weight of the rocket significantly
A) They cannot reach high speeds B) They have very low specific impulse C) They require considerable preparation before launch D) They are too expensive to build
A) It will switch to an auxiliary tank B) It will freeze the fuel C) It may overspeed D) It will automatically shut down
A) Centrifugal turbopump B) Diaphragm pump C) Peristaltic pump D) Reciprocating pump
A) SpaceX Raptor B) Saturn V F-1 C) Space Shuttle Main Engine D) SpaceX Merlin 1D
A) Methane B) Oxygen C) Carbon dioxide D) Helium
A) Approximately 5% B) Approximately 1% C) Approximately 20% D) Approximately 10%
A) Around 10% B) Around 25% C) Around 50% D) Around 1%
A) Pyrotechnic igniter B) Parachute recovery system C) Payload fairing D) Landing gear
A) First-stage boosters B) Atmospheric aircraft C) Deep space probes D) Satellites for orbit maintenance
A) Water vapor B) Nitrogen oxides C) Carbon dioxide D) Soot
A) Turbopump failure B) Oxidizer leak C) Battery explosion D) Foam insulation breaking loose
A) Space Shuttle main engine B) Raptor C) Delta IV engine D) Saturn V engine
A) Less explosive B) Non-flammable C) More explosive D) Equally explosive
A) The fuel density B) The injector implementation C) The nozzle material D) The chamber pressure
A) Unburnt propellant leaves the engine B) The nozzle melts immediately C) The rocket engine stalls D) The oxidizer freezes
A) High efficiency B) Variable efficiency C) Quite poor efficiency D) Moderate efficiency
A) Shower head B) Centripetal C) Pintle D) Self-impinging doublet
A) F-1 engine B) Apollo Lunar Module engine C) Kestrel engine D) Merlin engine
A) Elon Musk B) Robert Goddard C) Wernher von Braun D) Valentin Glushko
A) A cone-shaped sheet B) A parallel jet C) A turbulent sphere D) A solid cylinder
A) Merlin B) Wasserfall C) RS-25 D) Kestrel
A) Centripetal, double-flow, pressure-drop, oscillation-reduction B) Shower head, self-impinging doublet, cross-impinging triplet, centripetal, pintle C) Pintle, square hole, triangle hole, centrifugal D) Shower head, jet-stream, rocket-impingement, flat plate
A) Chugging B) Cavitation C) Hammering D) Resonance
A) Saturn V B) Atlas V C) Space Shuttle D) Mercury-Redstone
A) Helmholtz resonators B) Pressure relief valves C) Vortex generators D) Baffle plates
A) Monitoring exhaust temperature B) Varying the fuel flow rate C) Using small explosives D) Measuring external vibration |