The Amp Hour

An Interview with Brent and Bryce Salmi


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  • If you can't tell from the picture, Brent and Bryce are twins
    • 0h 0m 57s
    • They both went to RIT and ended up working together at SpaceX
      • 0h 1m 8s
      • They worked on AMSAT for their senior project
        • 0h 2m 8s
        • Fox series cube sats
          • 0h 2m 49s
          • AMSAT will make a plugin module
            • 0h 3m 51s
            • Elona (sp?) grants
              • 0h 4m 6s
              • 1U cubesats
                • 0h 5m 12s
                • AO40 - 600 kg satellite
                  • 0h 7m 29s
                  • MPPT on github
                    • 0h 8m 24s
                    • This actually was an analog computer to cut down on components that are susceptible to cosmic rays.
                      • 0h 10m 40s
                      • It relies on feed forward
                        • 0h 10m 50s
                        • Stateless design
                          • 0h 12m 43s
                          • AO91
                            • 0h 13m 32s
                            • AO92 - just under a year
                              • 0h 13m 36s
                              • K2GEXT
                                • 0h 16m 52s
                                • Balloon hipster
                                  • 0h 17m 7s
                                  • For their balloon project, they prioritized reliability
                                    • 0h 18m 31s
                                    • Used nail polish as conformal coat
                                      • 0h 19m 45s
                                      • Fell through a thunderstorm
                                        • 0h 20m 13s
                                        • Joined SpaceX mid-2013
                                          • 0h 21m 27s
                                          • Around the time of C2 - First dragon mission
                                            • 0h 21m 34s
                                            • 1000 people when they joined
                                              • 0h 22m 40s
                                              • F921 - upgraded version. This is the one outside of SpaceX as a monument.
                                                • 0h 25m 25s
                                                • Engineering as an action sport
                                                  • 0h 28m 30s
                                                  • Watching conspiracy videos about spacex
                                                    • 0h 28m 53s
                                                    • Burning out
                                                      • 0h 30m 20s
                                                      • What electronics are involved
                                                        • 0h 32m 44s
                                                        • Rio Team
                                                          • 0h 32m 57s
                                                          • Consumer parts vs aerospace parts
                                                            • 0h 34m 1s
                                                            • Shaun from Planet episode
                                                              • 0h 35m 13s
                                                              • MIL standard 1540
                                                                • 0h 36m 51s
                                                                • NASA derating
                                                                  • 0h 37m 39s
                                                                  • Guidance, nav, control
                                                                    • 0h 39m 28s
                                                                    • Fault recovery
                                                                      • 0h 39m 40s
                                                                      • Sensing the environment
                                                                        • 0h 39m 58s
                                                                        • Pyrotechnics
                                                                          • 0h 41m 26s
                                                                          • Frangible bolts
                                                                            • 0h 41m 34s
                                                                            • RF telemtry
                                                                              • 0h 42m 16s
                                                                              • Space race 3.0
                                                                                • 0h 44m 59s
                                                                                • Lock step (is having 2 processors normally)
                                                                                  • 0h 47m 6s
                                                                                  • Voting is having 3 systems
                                                                                    • 0h 47m 49s
                                                                                    • Curiosity goes into safe mode
                                                                                      • 0h 48m 58s
                                                                                      • Designing circuits at a very low level
                                                                                        • 0h 50m 58s
                                                                                        • Understanding every way a circuit that is going to fail
                                                                                          • 0h 51m 12s
                                                                                          • As engineers they're really paranoid now
                                                                                            • 0h 52m 1s
                                                                                            • SMPS failure
                                                                                              • 0h 52m 55s
                                                                                              • What is the margin of the components
                                                                                                • 0h 53m 17s
                                                                                                • Derating = overspec'ing
                                                                                                  • 0h 54m 52s
                                                                                                  • No one complains when it's lighter
                                                                                                    • 0h 58m 56s
                                                                                                    • FaradayRF
                                                                                                      • 1h 6m 56s
                                                                                                      • 900 MHz digital radio
                                                                                                        • 1h 9m 5s
                                                                                                        • Trying to make a platform for people to build on
                                                                                                          • 1h 11m 0s
                                                                                                          • Delay tolerant network
                                                                                                            • 1h 12m 7s
                                                                                                            • PSK31, FT8
                                                                                                              • 1h 12m 53s
                                                                                                              • ISM band
                                                                                                                • 1h 17m 8s
                                                                                                                • Article about differences
                                                                                                                  • 1h 17m 47s
                                                                                                                  • APRS
                                                                                                                    • 1h 21m 28s
                                                                                                                    • National projects
                                                                                                                      • 1h 21m 32s
                                                                                                                      • SDR vs Faraday
                                                                                                                        • 1h 24m 5s
                                                                                                                        • CC430 radio
                                                                                                                          • 1h 26m 53s
                                                                                                                          • 10-100kBaud
                                                                                                                            • 1h 27m 5s
                                                                                                                            • goTenna
                                                                                                                              • 1h 33m 56s
                                                                                                                              • TUN tap
                                                                                                                                • 1h 47m 39s
                                                                                                                                • FaradayRF GitHub
                                                                                                                                  • 1h 56m 13s
                                                                                                                                  • Relativity space in LA
                                                                                                                                    • 1h 57m 40s
                                                                                                                                    • Aeon 1 engine
                                                                                                                                      • 1h 58m 17s
                                                                                                                                      • Careers page
                                                                                                                                        • 1h 58m 47s
                                                                                                                                        • Autonomous airplanes
                                                                                                                                          • 2h 1m 55s
                                                                                                                                          • Richard Branson quote
                                                                                                                                            • 2h 4m 36s
                                                                                                                                            • @kb1lqd
                                                                                                                                              • 2h 6m 14s
                                                                                                                                              • @kb1lqc
                                                                                                                                                • 2h 6m 32s
                                                                                                                                                • @relativityspace
                                                                                                                                                  • 2h 6m 55s
                                                                                                                                                  • ...more
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                                                                                                                                                    The Amp HourBy The Amp Hour (Chris Gammell and David L Jones)

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