Posted on 07/17/2016 7:09:07 PM PDT by Jack Hydrazine
Good Night. Nice to spend time together...
Good night
I agree. In fact, I am amazed at some of the foundational concepts of mathematics, astronomy, and physics that were discovered hundreds and thousands of years ago.
Just the other day I happened across the Archimedes Screw which will move water and grains up hill.
It works as a thin lengthwise disk-like screw that runs the length of a tube inside, and it also works in a tubing that would resemble one wrapped around a pipe.
Here’s a link to the concept he discovered durig his life, 287 to 212 bc.
Amazing.
https://en.wikipedia.org/wiki/Archimedes%27_screw
I remember learning about that as one of his ideas...were they drawings or was that someone else?
I’m not sure. I believe there were drawings but I could be wrong.
Falcon 9 launch sequence
HH:MM:SS EVENT
-10:00:00 Falcon 9 to Vertical. Falcon 9 is powered on. Countdown starts.
-06:00:00 First Weather Balloon Release
-05:00:00 Launch Area Evacuation
-04:45:00 Range Controllers on Station
-04:35:00 Falcon 9 Attitude Control System N2 Loading
-04:00:00 Eastern Range Countdown Initiation
-02:45:00 Falcon 9 RF & Telemetry Checks
-02:30:00 Falcon 9 Launch Vehicle Release System Test
-02:25:00 TEA-TEB Bleed In
-01:45:00 Comm & FTS Checks
-01:40:00 Data Flow Tests with Downrange Tracking Stations
-01:00:00 Weather Briefing
-00:50:00 RF Link Checks
-00:45:00 Flight Control System Setup (Flight Software Loading)
-00:38:00 Launch Conductor takes launch readiness poll
-00:35:00 RP-1 (rocket grade kerosene) and liquid oxygen (LOX) loading underway
-00:13:00 COUNTDOWN HOLD POINT
-00:11:00 Terminal Count Briefing
-00:10:00 Falcon 9 terminal count autosequence started
-00:10:00 Dragon terminal count autosequence started
-00:09:55 Verify that Terminal Countdown has started
-00:09:50 Range Recorders Start
-00:09:45 Grid fin pneumatics secured.
-00:09:45 Launch Enable to Flight Mode
-00:09:20 Ground TEA-TEB Setup
-00:09:17 Merlin 1D: Lox Bleeder Valves Open
-00:08:15 Engine Trim Valve Cycling
-00:07:30 Go/No Go for Launch
-00:07:00 Falcon 9 begins 1st stage engine chill prior to launch
-00:07:00 Dragon to internal power
-00:07:00 First Stage ACS Close-Out
-00:07:00 First Stage Heater Shutdown
-00:06:35 Second Stage Heater Shutdown
-00:06:30 Engine chill has begun.
-00:06:25 Falcon 9 to internal power
-00:06:00 Transfer to Internal complete
-00:05:55 Pressurization for Strongback Retract
-00:05:30 Strongback Cradles Opening
-00:05:30 Dragon ready for Solar Array Power Generation (if applicable)
-00:05:30 Dragon Countdown Auto Sequence (if applicable)
-00:05:30 Dragon is on internal power
-00:05:00 Second Stage Nitrogen Loading Termination
-00:05:00 Vehicle in self-align.
-00:04:46 Stage 1 & Stage 2 Auto Sequence starts
-00:04:30 Stage 2 Thrust Vector Control Test
-00:04:25 Strongback start retract to launch position
-00:04:10 Vehicle Release Auto Sequence
-00:03:45 Verify Good Mvac TVC
-00:03:40 TEA-TEB Ignition System Activation
-00:03:30 Strongback Retraction complete
-00:03:25 Flight Termination System to Internal Power
-00:03:05 Flight Termination System Armed
-00:03:00 Strongback Securing complete
-00:03:00 LOX Topping Termination
-00:02:45 Fuel Trim Valve to Flight Position
-00:02:40 FTS Countdown Sequence
-00:02:30 S2 TVC (Thrust Vector Control) motion nominal
-00:02:30 S1 LOX (Liquid Oxygen) secured for flight.
-00:02:30 Final Status Check and Falcon’s flight computers switch to auto alignment
-00:02:00 Range Control Officer (USAF) verifies range is go for launch
-00:02:00 Flight Control to Self Alignment
-00:01:35 Helium Loading Termination
-00:01:30 SpaceX Launch Director verifies go for launch
-00:01:30 S2 LOX (Liquid Oxygen) secured for flight, Falcon 9 on internal power.
-00:01:30 Commodity loading ends
-00:01:30 Final Engine Chilldown, Pre-Valves/Bleeders Open
-00:01:20 Engine Purge
-00:01:00 Command flight computer to begin final prelaunch checks.
-00:01:00 Pad Deck Water Deluge System Activation
-00:00:55 Second Stage to Flight Pressure
-00:00:50 First Stage Thrust Vector Actuator Test
-00:00:40 First Stage to Flight Pressure
-00:00:30 F9 and Dragon in startup.
-00:00:20 All Tanks at Flight Pressure
-00:00:15 Arm Pyrotechnics
-00:00:10 Latest VC Abort
-00:00:03 Engine controller commands engine ignition sequence to start
00:00:00 Falcon 9 liftoff
00:00:20 End vertical climb and start pitch and roll maneuver
00:01:02 Falcon 9 breaks the sound barrier
00:01:08 Max Q (moment of peak mechanical stress on the rocket)
00:01:35 Stage 2 - Merlin Vac Engine Chilldown
00:02:00 Entering 1st stage throttle segment, begin gradual reduction of thrust to limit stress
00:02:21 1st stage engine shutdown/main engine cutoff (MECO)
00:02:24 1st and 2nd stages separate
00:02:29 1st Stage Maneuver out of 2nd Stage Plume
00:02:32 2nd stage engine starts
00:02:42 1st stage boostback burn begins (45-60 sec)
00:03:42 Dragon nose cone jettisoned
00:06:31 1st stage entry burn begins for (15-25 sec)
00:07:38 1st stage landing burn begins (30-40 sec)
00:08:00 2nd Stage Terminal Guidance Mode
00:08:00 2nd Stage Flight Termination System safe
00:09:02 2nd stage engine cutoff (SECO)
00:09:37 Dragon separates from 2nd stage
00:11:00 Start sequence to deploy solar arrays
Bookmark.
Kewl!
Pretty incredible to be able to land that booster. Gave me goose bumps watching that. WOW!
Post launch news conference
https://m.youtube.com/watch?v=KPlXD7HOmjU
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