Boeing 737 max after two fatal crashes, an expert explains the issues gas hydrates india


Over its lifetime, the 737 has stretched from 29 metres to 44 metres long, fuel capacity has risen from 14.7 tonnes to 21.3 tonnes, and passenger seats have increased from 118 to 230. With these developments have come demands for greater safety, reduced noise, particulate and greenhouse gas emissions, and lower running gas efficient suv 2015 costs. So while all 737s are certified as a single aeroplane type, the changes have been massive.

Most recently, the big gas prices going up june 2016 push has been to reduce fuel consumption. For both economic and environmental reasons, this led to the latest 737 MAX 8 models – along with the competitor Airbus A320 Neo – being fitted with new, larger and more efficient CFM Leap engines. These must be mounted higher and further forward than previously, creating a handling problem gsa 2016 catalog that wasn’t unique to this aeroplane, but had to be addressed. Safety

Angle of attack is the angle between the wing chord (an imaginary line between the leading and trailing edges of the wing) and the airflow. To generate lift, this is typically around two degrees in cruising flight. But to create lift at low airspeeds during take-off, landing and some manoeuvres, it must be much higher – often more than 10 degrees.

If the angle of attack is too great, the aeroplane loses control – or ‘stalls’. This has nothing to do with stalling an engine and will usually electricity lab physics cause a sudden descent. The larger, repositioned engines initially created a handling problem at a high angle of attack, particularly gas news at low speeds, which could pitch the aeroplane nose-up into an even greater angle of attack, potentially worsening the loss of control.

Boeing addressed this by introducing an automated system called Manoeuvering Characteristics Augmentation System (MCAS). This automatically forces the nose down from high angles of attack, removing the aeroplane from the stall condition. It does this by rotating the tailplane, effectively changing the shape 1 unit electricity cost in bangalore of the aeroplane. This was necessary – stalling under these circumstances has been a serious, even fatal, problem in some previous airliners.

So far so good. But then we hit a problem which is alleged to have contributed to the October 2018 Lion Air 737 MAX 8 crash in Indonesia. While this aircraft had the MCAS system, the pilots allegedly didn’t know about it. It has been said a decision had been made not to include the system in pilot training 5 gases, in particular that if the system received incorrect signals from the aeroplane’s angle of attack sensors the aeroplane could pitch steeply nose-down into a potentially unrecoverable dive.

After these two tragedies there will likely be a number gas x coupon 2015 of court cases. The families will rightly want closure. But we also need to ensure that similar disasters don’t happen in the future – and this involves aviation professionals working to find new safety solutions. Focusing too much on legal outcomes could potentially prevent the best safety outcomes from being pursued.

Author: Guy Gratton, visiting professor, Cranfield University. This article was originally published in The Conversation. Read the original article here. https://www electricity year×300.jpg 2019-03-26T06:55:46+00:00 David O’Riordan Mech aeronautical,training,US