Lol....you schooled no one. You just displayed allot of ignorance. Really, lost 40 % of the fleet ? That's such a made up and arbitrary standard of reliability.
The worlds first reusable space craft flew from 1981 to 2011.
There were a total of
135 Missions that took a total of 789 Astronauts and Cosmonauts (
355 different people from 16 different Nations ) into low orbit were they spent a Total of
1,322 days, 19 hours, 21 minutes and 23 seconds in space.
The shuttles docked with Russian space station a total of Mir 9 times and visited the ISS 37 times and delivered over
3 million pounds of cargo into space. There were also a total of 27 Space Lab missions flown.
It launched the Hubble telescope, repaired and upgraded the Hubble telescope and that led to some of the most spectacular images of our Universe ever taken...
Pillars of the Universe
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Deep Space Field Pic...
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Reliability ?
The Shuttle's main engine, ( on lift off the three main engines could create a maximum of 37,000,000 HP ) the Aerojet Rocketdyne's Space Shuttle Main Engine (SSME) is the world’s most reliable and highly tested large rocket engine ever built, and operates at greater temperature extremes than any mechanical system in common use today. SSME operates under temperatures ranging from
-423º Fahrenheit to +6000º Fahrenheit.
The SSME has achieved 100 percent flight success with a demonstrated reliability exceeding 0.9996 in over 1,000,000 seconds of hot-fire experience.
The shuttle was also dead stick landed from orbit every time. It was essentially a glider with no power and no second chances.
Yes, it was expensive, I suppose your'e all for blasting Americans into orbit on a budget ? It was a amazing accomplishment thanks to the tens of thousands of hardworking Americans, some of our smartest even.
What have we accomplished in the last 7 years as a Nation ? Anything remotely as significant ? Nope, America according to the last Democrat debate is a nation filled with disparity and hopelessness, racist and victims.