So this morning launch of ULA's Delta IV heavy almost happened. The launch was aborted literally at the last second. This mission – NROL-44 was to launch a payload for National Reconnaissance Office (NRO) , supporting US national security The launch had already been scrubbed the night before. After that abort ULA said the issue was with a critical ground pneumatics control system With the launch rescheduled for 24 hours later, everything was looking good – and the countdown had entered its final phase. With the commentator even declaring “Liftoff....” as T-0 was reached. Before announcing they had had a hot fire abort. ULA released a tweet saying, rhe launch of a United Launch Alliance #DeltaIVHeavy carrying the #NROL44 mission for the National Reconnaissance Office was scrubbed today due to an unexpected condition during terminal count at approximately three seconds before liftoff. They went on to say that it would take at least 7 days for another launch attempt TORY BRUNO – CEO of ULA said The bird is in good shape. This was an automatic abort during the ignition sequence. Cause appears to have been in the ground system. System functioned as intended to protect the vehicle and payload. Whether the failure detected tonight was connected to yesterday's abort isn't clear and they could be two completely separate issues. But , from a ULA perspective, their systems worked as they should. They detected an anomaly and they shut down the launch automatically – with the rocket and its payload being protected, which of course is their priority. Of course, the spectacular fireball that occurs before the launch of a DELTA IV Heavy can surprise some people and could give the impression of problem in itself. However, this is perfectly normal for this launch system and the rocket is designed to be protected from the fire and heat. The fireball occurs as hydrogen is pushed through the engines a few seconds before being mixed with oxygen – as that hydrogen leaves the engine it rises up the side of the rocket and is ignited once the engines fire. Thanks for watching - why not support this channel and help us grow. https://www.youtube.com/channel/UCakgsb0w7QB0VHdnCc-OVEA/join Subscribe For More Videos Like This: http://www.youtube.com/user/ouramazingspace?sub_confirmation=1 See my latest videos : https://www.youtube.com/user/ouramazingspace/videos Bringing you the BEST Space and Astronomy videos online. Showcasing videos and images from the likes of NASA,ESA,Hubble etc. Join me on Facebook: https://www.facebook.com/spaceisamazing Twitter: https://twitter.com/AmazingSpace2 Google+ : http://goo.gl/1WCBn9 Music by Keving Macleod http://incompetech.com/music/royalty-free/
Posts
0 comentarios: