full transcript
#### From the Ted Talk by Markus Fischer: A robot that flies like a bird

## Unscramble the Blue Letters

So, the next thing we did, or the cenlgehlas we did, was to coordinate this movement. We have to turn it, go up and go down. We have a split wing. With the split wing, we get the lift at the upper wing, and we get the porlispuon at the lower wing. Also, we see how we measure the aerodynamic efficiency. We had knowledge about the electromechanical efficiency and then we can calculate the aerodynamic efficiency. So therefore, it rises up from passive torsion to active tsoiron, from 30 percent up to 80 pnerect.
## Open Cloze

So, the next thing we did, or the **__________** we did, was to coordinate this movement. We have to turn it, go up and go down. We have a split wing. With the split wing, we get the lift at the upper wing, and we get the **__________** at the lower wing. Also, we see how we measure the aerodynamic efficiency. We had knowledge about the electromechanical efficiency and then we can calculate the aerodynamic efficiency. So therefore, it rises up from passive torsion to active **_______**, from 30 percent up to 80 **_______**.
## Solution

- challenges
- propulsion
- torsion
- percent

## Original Text

So, the next thing we did, or the challenges we did, was to coordinate this movement. We have to turn it, go up and go down. We have a split wing. With the split wing, we get the lift at the upper wing, and we get the propulsion at the lower wing. Also, we see how we measure the aerodynamic efficiency. We had knowledge about the electromechanical efficiency and then we can calculate the aerodynamic efficiency. So therefore, it rises up from passive torsion to active torsion, from 30 percent up to 80 percent.
## Frequently Occurring Word Combinations

### ngrams of length 2

collocation |
frequency |

aerodynamic efficiency |
3 |

## Important Words

- active
- aerodynamic
- calculate
- challenges
- coordinate
- efficiency
- electromechanical
- knowledge
- lift
- measure
- movement
- passive
- percent
- propulsion
- rises
- split
- torsion
- turn
- upper
- wing