“T minus Time” is a system to mark points at which actions necessary for the launch are planned – this time stops and starts as various hold points are entered, and so doesn’t show the actual time to launch. This countdown is used to give people an idea of when the launch will take place, and it also allows time for final preparations before lift-off. In this case, T-minus 10 minutes means that the launch is scheduled to occur in 10 minutes. In the context of a rocket launch, the “L minus Time” is the physical time before launch, e.g. The T in T-minus stands for time, and the minus means that there is a set amount of time until launch. What does the L minus time on a rocket mean? ![]() We’ve put together a list of 8 money apps to get you on the path towards a bright financial future. 8 clever moves when you have $1,000 in the bank. So, when they reach T-0 it means that M=0 and T=C so Time to reach something is equal to Current time and space shuttle launches…. T minus Time is a system to mark points at which actions necessary for the launch are planned - this time stops and starts as various hold points are entered. What does it mean when someone says T minus 0? That’s the “T-minus” countdown “T-minus 10 hours.” The closer the time of launch approaches, the more the countdown will be “T-minus 9 hours,” “T-minus 5 hours,” “T-minus 55 minutes,” etc., until it reaches the most iconic part of the launch countdown – the last 10 seconds before launch. What does the countdown T Minus 10 hours mean? So any moment before the start of event is taken as t – (something). Generally time of start of any event is taken as t=0. In the context of a rocket launch, the L minus Time is the physical time before launch, e.g. ‘T plus’ times are times after the event has occurred. ‘T minus’ times are times before that event is scheduled to occur (‘T minus 30 minutes’ is 30 minutes before the event is scheduled to occur). What does T minus 30 minutes or T plus 30 minutes mean? T-minus has also been adopted by the gaming community to refer to the countdown timer in video games. For example, t-minus 10 minutes would mean there are 10 minutes left until launch. What does TY mean? TY is an acronym meaning Thank You. T-minus is a term used in project management to indicate the amount of time remaining before a launch or other event. ‘at about T-minus 30 seconds the crowd is just going crazy’.‘it’s T-minus 15 days until Mother’s Day’.Used to indicate that a specified amount of time remains before an event is scheduled or expected to take place. T-minus is slang from NASA□□ who use it to describe the time until mission begins or after it begins. During planned holds in the countdown process (when the countdown clock is intentionally stopped), the T- time also stops. L- and T- T- (pronounced “T minus”) refers to the time remaining on the official countdown clock. The last ten seconds are usually counted down aloud “Ten seconds to liftoff. The GLS is typically started at about the T-minus 45 minute mark.If that time is 45 seconds away, it is said to be ‘T-minus 45 seconds and counting.ĭuring a NASA countdown to a rocket launch, ‘T-minus’ translates to ‘Time minus’ the ‘T’ stands for the exact time at which the rocket is scheduled to be launched. This program will continue to monitor the vehicle's parameters and will be able to halt the countdown if a problem is detected. The Ground Launch Sequencer (GLS), which is an automated program that controls all activity during the final portion of the countdown, will assume automatic control of the countdown at the T-minus 9 minute mark. These technicians closely monitor computer displays and gauges that show the performance of the shuttle's systems at the launch pad.Īfter the T-minus 9 minute built-in hold, the countdown will resume. Weather forecasts for the Cape Canaveral area will also be checked to verify that the conditions meet the agency's criteria for a safe launch.ĭuring the hold, NASA officials on consoles will be polled for their "go/no go" decisions. Before this point, the NASA test director will perform a launch readiness poll of the shuttle launch team. Īt the T-minus 9 minute mark, the clock will typically enter a 45-minute hold. At the end of these "built-in holds," the countdown clock will resume unless NASA encounters any technical glitches. At several predetermined points during the launch countdown, NASA will pause the clock as part of standard procedure to give the ground teams time to resolve any unexpected issues that may crop up.
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