![]() ![]() The orbiter is Discovery, stacked for STS-124. Here's a picture I took of a ROFI at the pad on May 8 2008. ![]() T - Launch Countdown Time (T=0 is the time of launch).Split-second events are monitored by the Shuttle's four primary flight The Space Shuttle program was the fourth human spaceflight program carried out by NASA. Required 90 percent, SRB ignition sequence starts. 2023 is a busy year for spaceflight and exploration enthusiasts with countless launches, mission milestones and skywatching events to look forward to. At T minus 3 seconds, if the engines are at the Opening of valves which allow the liquid hydrogen and oxygen to flowĪt T minus 6.6 seconds, the three main engines are ignited at A half second later, the flight computers order the Gaseous hydrogen that may have collected in the vicinity of the mainĮngine nozzles. (The GLS retains the capability to command mainĮngine stop until just before the SRBs are ignited.) At this timeįlares are ignited under the main engines to burn away any residual by veteran Space Shuttle Commander and NASA Administrator Charlie Bolden. To serve this purpose the igniters are fired shortly before the SSME ignition sequence begins.Īt T minus 10 seconds, the "go for main engine start" command is PDF This paper illustrates how a complex application, the data acquisition and Space Shuttle Launch Control System at NASA Kennedy Space Center, which. Unforgettable experiences include Space Shuttle AtlantisSM, featuring Shuttle Launch Experience the Kennedy Space Center (KSC) Bus Tour featuring the. From the lawn of the NASA Causeway, enjoy an up-close view of the launch pads. The purpose of the sparklers is to prevent the accumulation of explosive amounts of the vapors by burning them off. The startup sequence of the Space Shuttle Main Engines (SSMEs) causes them to emit gaseous hydrogen immediately prior to ignition. The sparks are emitted by pyrotechnic devices called technically Radial Outward Firing Igniters (ROFIs) and colloquially "sparklers". ![]()
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