SpaceX reusable rocket | Wikipedia audio article
Channel: Subhajit Sahu
Date: 2019-03-27

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/SpaceX_reusable_launch_system_development_program


00:03:21 1 History
00:13:15 2 Technologies
00:18:44 3 Economics of rocket reuse
00:27:21 4 Technical feasibility
00:29:40 5 Test program
00:32:37 5.1 Flight test vehicles
00:34:53 5.1.1 Grasshopper
00:36:58 5.1.2 Falcon 9 Reusable Development Vehicle
00:39:19 5.1.3 DragonFly
00:41:41 5.1.4 Starship hopper
00:43:26 5.2 Falcon 9 booster post-mission flight tests
00:45:25 5.2.1 Re-entry and controlled descent development
00:47:53 5.2.2 First landing on ground pad
00:49:52 5.2.3 Near-misses on the oceans
00:52:20 5.2.4 Landings at sea
00:54:54 5.2.5 Routine procedure
00:57:01 5.2.6 Future tests
00:59:09 5.3 First-stage reuse
01:02:43 5.4 Block 5 boosters
01:03:46 5.5 Fairing reuse
01:06:47 5.6 Second-stage reuse
01:08:28 6 Operational flow
01:09:54 7 See also



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SUMMARY
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The SpaceX reusable launch system development program is a privately funded program to develop a set of new technologies for an orbital launch system that may be reused many times in a manner similar to the reusability of aircraft.  The company SpaceX is developing the technologies over a number of years to facilitate full and rapid reusability of space launch vehicles. The project's long-term objectives include returning a launch vehicle first stage to the launch site in minutes and to return a second stage to the launch pad following orbital realignment with the launch site and atmospheric reentry in up to 24 hours.  SpaceX's long term goal is that both stages of their orbital launch vehicle will be designed to allow reuse a few hours after return.The program was publicly announced in 2011. SpaceX first achieved a successful landing and recovery of a first stage in December 2015.  The first re-flight of a landed first stage occurred in March 2017 with the second occurring in June 2017, that one only five months after the maiden flight of the booster. The third attempt occurred in October 2017 with the SES-11/EchoStar-105 mission. Second flights of refurbished first stages then became routine.
The reusable launch system technology was developed and initially used for the first stages of the Falcon family of rockets. After stage separation, the return process involves flipping the booster around, an optional boostback burn to reverse its course, a reentry burn, controlling direction to arrive at the landing site and a landing burn to effect the final low-altitude deceleration and touchdown.
SpaceX intended (from at least 2014) to develop technology to extend reusable flight hardware to second stages, a more challenging engineering problem because the vehicle is travelling at orbital velocity,
which is considered paramount to the plans Elon Musk is championing to enable the settlement of Mars. It is thus planned to be developed for all of the flight hardware for the new SpaceX vehicles planned to transit to Mars, with initial test flights expected no earlier than 2020.  SpaceX will also experiment with second stage recovery on a few select Falcon 9 flights or Falcon Heavy flights. 
After 2017, much of the reusable technology development work and testing turned substantially toward advances in reusable second-stage-with-integrated-spaceship technology to support BFR use not merely in Earth's atmosphere, but also as intended to be used on Solar system celestial bodies such as the Moon and Mars with very diverse atmospheric characteristics.