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Video answers: Why are the 737 engines flat?

Here are the answers to the previous video, enjoy!

Suggested ICAO level for video: 5+

  1. It was designed in 1960s.
  2. Designing it to be low to the ground made it easier to load by baggage handlers.
  3. This characteristic became an issue for the 737 designers when they wanted to update it with turbofan engines which were much bigger than the previous turbojet ones.
  4. The solution was to redesign the engine pylons and move the engines further forward to the front of the wings and raising them a little. Also, by making the engine intake a little flatter they were able to gain a few more centimetres of clearance from the ground.
  5. Landings are sometimes performed with a slight bank angle and this could cause engines which are low to the ground to hit the runway, so making them as high as possible is desirable.
  6. A lot of equipment was moved to the side of the engines, making them wider.
  7. The MAX has a higher ground clearance to accommodate the new LEAP engines. This means that the MAX doesn’t have the iconic engine shape of former 737 generations.

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Video answers: ‘Can an airport be green?’

Here are the answers to last Friday’s video, enjoy!

Suggested ICAO level for video: 5+

  1. The use of elements of the natural world in terminal designs is becoming more popular nowadays.
  2. The expansion project at Oslo airport exemplifies this characteristic.
  3. They achieved their objectives by using simplicity with terminal signage, by keeping the airport as quiet as possible, by adding trees to the food court and by adding green walls and waterfalls.
  4. Large floor to ceiling glass panels allow as much daylight as possible into the building.
  5. Snow which is collected during the winter helps to cool the building during the summer.

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Video answers: ‘Landing on the Hudson’

Here are the answers to last Friday’s video, enjoy!

Suggested ICAO level for video: 5+

  1. They saw the birds moments before impact, but they were too close to manoeuvre around.
  2. It’s knees together, feet flat on the floor, the body should be bent as far forward as possible, with the arms wrapped under the legs or braced against the seat in front of you.
  3. That’s the best position because your body is going to be thrown forward in an impact, so if you get into that kind of position before the impact, you can reduce your level of injury.
  4. You should be thinking about the location of the emergency exit and that you might have to hold your breadth if water enters the fuselage.
  5. He though that the plane was going to sink to the bottom of the river.

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