lecture 3 Flashcards
NATS 1530 lecture 3 material
What did the chinese space agency achieve?
- has got a rover on the moon (for 6 years)
- has got a rover on the mars (for 2 years)
- launched human into space in 2003 (third nation to do so)
- yang lui
- senior administrator
- space capsules are very cramped
- rocket launchers (1970-)
- they get bigger/taller over time
- more fuel
- more complicated with boosters
- less cramped
- more power
- they get bigger/taller over time
What is rocket lab achieving?
- pecializing in lofting small satellites into low earth orbit
- 53 times in last 8 years
- growing economy in low-earth orbit
- pharmaceutical companies developing new drugs in low earth orbit
- space communication
- internet satellite relays
- space tourism
- successfully launched from new Zealand and Virginia (wallops)
- modest size; 300kg of payload ($5million)
- gets things up there within a couple weeks to a couple months
- rockets tend to launch east(direction of earths rotation)
- attempt to fly from as close to the equator (faster)
- want to make rockets more reusable like an airplane
- more cost and environmentally friendly
What did Da-Vinci do other than paint?
- Da vinci had a flying machine; basically wings (didnt work)
- also basically developed a helicopter (aerial screw)
- the idea of a helicopter
- the main point is that ideas are powerful
- and putting them into “practice” is good
- also basically developed a helicopter (aerial screw)
What did Johannes Kepler do? Why was he so well known?
- stronomical theoriction
- planets orbit sun
- wrote a science fiction book called “the somnium”
- depicted how earth would look from the moon
- was imaginative but its where people began to think about leaving earths atmosphere
- was innovative for space exploration
important that humans were “engineering” ways of flight
- hot air balloons (montgolfier brothers)
- trapping enough hot air will generate lift
- density of that package of air would become lower than surrounding air if u heat it
- alternatives without heat
- hydrogen and helium; flammable or not common
What/when was the first reported rocket used?
- the first reported rocket was around the 10th century in china (fire arrow; device that uses gunpowder and launches an arrow)
- allows for significant amount of thrust in one direction (the arrow)
- use in the military
What did conrad haas recognize?
- reported a variety of rocket techniques that referenced multi-stage rocket systems and fuel
- first to conclude that instead of one stage rocket, you can strap things together
- able to launch things further
- he recognized fuel doesnt need to be solid
- was pre-newton (16th century)
William Moore
first person to utilize Newtons work of rocketry for warfare
- to explain rocket dynamics
person thinking about work that can be utilized for space flight
What did william Leitch propose?
- proposed using rockets to achieve human space flight in 1861 instead of just within the atmosphere
- a book was made about his work
- correctly used newtons law, but not as thorough as it should have been
- good because a person recognized we can use math and experiments to take us to space
Who was Jules Garbiel Verne (18th century)
- french novelist
- significant influence on people/readers thinking about space flight + future
- really made people interested in spaceflight
- huge following
- many of his books have been turned into movies
- never utlized any known works about rock propulsion
- wrote about putting 3 individuals into a very big canon, and launched them at the moon
Who was Herbert George Wells (18th-19th century)
- english novelist
- Shakespeare of fiction
- his books also became movies
- book - men on the moon
- inhabitants on the moon
- got people on moon by inverting gravity
- basically good that the idea of space travel is more common
- got people interested in it
- basically good that the idea of space travel is more common
Who was Orsen Welles (1938)
- war of the worlds
- broadcasted a reenactment of Herbert wells on halloween eve
- alien invasion
- many people believed it was real and started calling 911
- many people had radios during this time
Who were the founders of modern rocketry
Russian
- konstanitin Tsiolkovsky
Chinese
- qian xuesen
German
- hermann oberth, fritz von open, wernger von braun
american
- H. Goddard
What are the 3 major components of a rocket?
Fuel (liquid or solid), rocket body, and payload (stages)
How does the fuel contribute to the rocket?
- generates thrust and allows rocket to move
- controlled explosion
- exhaust speed is a characteristic of fuel
- constant 2,500m/s
How does the rocket body contribute to the rocket?
structure holding the fuel, engines, and guidance
