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  • MUSIC When you're

  • building the most powerful rocket ever there are lots of things to think about.

  • One of the things that we think about is how do we point this launch vehicle

  • very, very precisely. In order to do this we have taken the pieces of our control

  • system that have been flight proven and we are adding a new piece that we

  • call adaptive augmenting control to help us to do this even more effectively.

  • When you consider the basic design envelope that you want to fly through,

  • you really don't see a need for adaptive control. The basic control system can get the job done.

  • But when you talk about failure scenarios or a stack

  • up of unknown unknowns, adaptive control can provide a lot more

  • performance. When NASA develops new technologies for launch vehicles we

  • need mature this technology through flight testing. What we've done is we've

  • partnered with other NASA entities in order to test our SLS flight control

  • system on an F-18 aircraft. The really key capability that the

  • Armstrong Flight Research Center offered to SLS was the ability to take

  • the SLS math models, of how it pitches throughout its flight regime, put

  • those SLS math models on the F-18 and have it act like the SLS in flight.

  • We were able to fly many SLS scenarios, everything from a nominal vehicle and

  • a nominal environment, to really challenging scenarios where we would

  • have sloshing propellant, or we would have a huge wind shear event. We

  • even simulated things where we would have the core engines actually stick in

  • one direction and not be able to move them and then the rest of the control

  • system had the responsibility of compensating for those issues.

  • As we were in the control room looking at the data coming in from these many

  • trajectories, we could quickly see that our adaptive control performed just as

  • expected, increasing the performance of the basic control system. Coming

  • out of this flight campaign we were able to meet all of our test objectives

  • multiple times. This is on top of the millions of simulated trajectories that

  • we've already flown, all leading up to the first unmanned flight test of SLS,

  • the most powerful rocket ever made. MUSIC

MUSIC When you're

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B1 中級

数学モデルでF-18を宇宙ロケットに (Math Models Make F-18 into Space Launch System)

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    richardwang に公開 2021 年 01 月 14 日
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