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 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 upepr wing, and we get the propulsion at the lower wing. Also, we see how we measure the aerodynamic efficiency. We had knowledge about the ectcneioaaelhmrcl efficiency and then we can calculate the aerodynamic efficiency. So therefore, it rises up from passive torsion to avcite torsion, from 30 pencret up to 80 percent.

#### Open Cloze

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 **_____** wing, and we get the propulsion at the lower wing. Also, we see how we measure the aerodynamic efficiency. We had knowledge about the **_________________** efficiency and then we can calculate the aerodynamic efficiency. So therefore, it rises up from passive torsion to **______** torsion, from 30 **_______** up to 80 percent.

#### Solution

- active
- percent
- upper
- electromechanical

#### 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.
#### 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