Did you know? #17

Did you know
Did you know

Q) Are there crew sleeping spaces onboard an aircraft ?

A) Many Boeing 777 and 787 planes have a secret staircase that leads to a windowless group of bedrooms that are known as Crew Rest Compartments (CRCs). They are designed to let the cabin crew rest or sleep during long haul flights. The size and location of these spaces varies depending on the aircraft model, but they are typically hidden behind the cockpit area, located above first class. On Boeing 777s, there are six to ten beds, and in a separate area for pilots, there are two beds, two seats, and even a bathroom.

 

Q) What happens if all the planes engines fail in the air ?

A) If all the aircraft engines fail, will the plane still fly or will it fall out of the sky? An aircraft will glide perfectly well even if all its engines fail. In fact, the chances are that if you’ve flown in a plane, you’ve seen it glide at some point (more about this later). Aircraft are able to fly through the movement of air passing over the wings. As long as this process continues the aircraft will continue to fly. If both engines fail, the aeroplane is no longer being pushed forwards, therefore in order to keep the air flowing over the wings, the aircraft must exchange energy through losing altitude to maintain forward airspeed. The aircraft doesn’t have to lose altitude particularly rapidly to keep flying and therefore if both engines were to fail at high altitude, the aircraft may have as much as 20 – 30 minutes aloft to find somewhere to land. Here’s an example, a typical commercial aircraft has a lift to drag ratio of around 10:1. This means that for every 10 miles it travels forward it looses 1 mile in altitude. If an aircraft is at a typical cruise altitude of 36,000 (which is 6 miles up) and looses both engines, it can travel a forward distance of 60 miles before reaching the ground.

Rest assured, dual engine failure is almost unheard of. We all know about the story of the Hudson River landing in New York, but that really was exceptional – and everyone survived thanks to the quick actions of the flight crew.

To know more Aviation facts, click here.

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Priya is an airline pilot, spotting aircraft in the skies as a child gave birth to her dreams of flying an aircraft, a feat she achieved at the age of 17. While flying gives her a high, writing keeps her grounded, but she finds both equally liberating. In this blog she will take you through some fact files in the field of Aviation.