Pierwszy test OmegA – anomalia BY KRZYSZTOF KANAWKA ON 31 MAJA 2019
Moment rozerwania dyszy silnika pierwszego stopnia rakiety OmegA / Credits - Northrop Grumman(...) Nośność wariantu na GTO ma się zawierać w zakresie od 4900 do 10100 kg, zaś wariant lotu bezpośrednio na GEO ma wynosić ładunki od 5250 do 7800 kg. Rakieta ma być gotowa do pierwszego startu w 2021 roku. Z dostępnych informacji wynika, że Orbital ATK nie planuje odzyskiwania jej elementów.
Trzydziestego maja 2019 roku nastąpiło pierwsze statyczne odpalenie pierwszego stopnia rakiety OmegA. Nagranie z tego testu prezentujemy poniżej. Ten statyczny test nie przebiegł do końca prawidłowo – tuż przed 120 sekundą doszło do rozerwania dyszy silnika. (...)
https://kosmonauta.net/2019/05/pierwszy-test-omega-anomalia/Northrop Grumman to investigate anomaly after OmegA’s first rocket motor testby Sandra Erwin — May 30, 2019
(...) More than 12 feet in diameter and 80 feet long, the first stage fired for 122 seconds at the company’s test facility in Promontory, Utah. The static fire produced more than two million pounds of maximum thrust — roughly the equivalent to that of eight-and-a-half jumbo jets. The test verified the performance of the motor’s ballistics, insulation and joints as well as control of the nozzle position, Northrop Grumman said in a statement.
“What we observed today was successful test,” Kent Rominger, Northrop Grumman’s vice president and capture lead for the OmegA launch system, told reporters at a news conference following the test.
Rocket motors are tested at high and low temperatures, he said. This test was at a high temperature of 90 degrees “so you get a little bit higher thrust,” Rominger said. “It appears that everything worked very well. At the very end when the engine was tailing off, we observed the aft exit cone, maybe a portion of it, doing something a little strange that we need to go further look into.”
A large plume of black smoke seen during the test was normal, Rominger said. When a motor burns out on the ground in tests, black smoke is expected whereas in space it’s a much cleaner burnout.
Rominger would not confirm whether a piece or pieces of the aft exit cone came apart. “We have to dig into all that data, analyze it to see what happened,” he said. The nozzle in OmegA’s C600 first stage motor is a commercial nozzle that is different than the one used by NASA’s Space Launch System, he said. (...)
https://spacenews.com/northrop-grumman-to-investigate-anomaly-after-omegas-first-rocket-motor-test/Northrop Grumman looking into dramatic nozzle anomaly on Omega rocket motorMay 30, 2019 William Harwood
https://www.youtube.com/watch?time_continue=1320&v=8MTM-ANa7FI(...) Northrop Grumman is building more powerful solid-propellant boosters for NASA’s huge Space Launch System rocket, which will be used in the early 2020s to launch astronauts back to the moon. It was not immediately known what impact, if any, the test anomaly Thursday might have on the SLS program.
But Rominger downplayed commonality between the two designs.(...)
https://spaceflightnow.com/2019/05/30/northrop-grumman-looking-into-dramatic-nozzle-anomaly-on-omega-rocket-motor/
Wątek: Northrop Grumman (Przeczytany 7004 razy)