SpaceX high-altitude controlled-descent tests | Wikipedia audio article
Channel: wikipedia tts
Date: 17/05/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Falcon_9_first-stage_landing_tests


00:01:04 1 Overview
00:03:22 2 History
00:05:37 3 Post-mission test plan
00:07:44 4 Test flights
00:07:53 4.1 Ocean touchdown attempts
00:08:02 4.1.1 Flight 6
00:09:39 4.1.2 Flight 9
00:11:40 4.1.3 Flight 10
00:13:04 4.1.4 Flight 13
00:14:37 4.1.5 Flight 15
00:16:15 4.1.6 Flight 46
00:16:24 4.1.7 Flight 48
00:16:31 4.2 Landing attempts
00:18:34 4.2.1 Flight 14
00:20:38 4.2.2 Flight 17
00:21:32 4.2.3 Flight 20: first landing on ground pad
00:24:01 4.2.4 Flight 21
00:24:49 4.2.5 Flight 22
00:25:40 4.2.6 Flight 23: first landing on a drone ship
00:26:30 4.2.7 Flight 24: first return from GTO mission
00:27:53 4.2.8 Flight 25
00:28:23 4.2.9 Flight 26
00:29:03 4.2.10 Flight 27
00:29:25 4.2.11 Flight 28
00:29:53 5 Transition to routine reuse
00:31:13 6 See also



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SUMMARY
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The Falcon 9 first-stage landing tests were a series of controlled-descent flight tests conducted by SpaceX between 2013 and 2016. Since 2017, the first stage of Falcon 9 missions has been routinely landed if the rocket performance allowed it, and if SpaceX chose to recover the stage. 
The program's objective was to reliably execute controlled re-entry, descent and landing (EDL) of the Falcon 9 first stage into Earth's atmosphere after the stage completes the boost phase of an orbital spaceflight. The first tests aimed to touch down vertically in the ocean at zero velocity. Later tests attempted to land the rocket precisely on an autonomous spaceport drone ship (a barge commissioned by SpaceX to provide a stable landing surface at sea) or at Landing Zone 1 (LZ-1), a concrete pad at Cape Canaveral. The first ground landing at LZ-1 succeeded in December 2015, and the first landing at sea on a drone ship in April 2016. The second landed booster, B1021, was the first to fly again in March 2017, and was recovered a second time.