Hello people,i am Sushil here and am here with the continuation of the topic the vertical take-off of the jetliners. In the last post we saw that how the concept of vertical take-off works and how planes fly . A vertical takeoff was performed at the Paris air show .

Now as we know this concept is not used in the passenger jetliners because of the few certain reasons which i will be discussing in this post . 

Many of the military planes also follow and use this concept but not the passenger airlines.

Now here are the reasons why this is not put into practice by the passenger aircrafts:

Civilian airliners are designed and operated in such a way that an engine failure will (almost) never result in a fatal crash, regardless of the flight phase. That is only possible thanks to the fact that engine failure does not result in a dramatic loss of lift, since the aircraft still has a decent amount of forward momentum. Even then, you can use one engine to fly the aircraft to the nearest airport (engines are actually designed to be powerful enough to do this).

However, engine failure during the VTOL phase would cause total loss of lift, preventing the pilots from avoiding/mitigating the crash and resulting in the death or injury of the passengers.

If you want to explore this topic a bit more, I suggest reading articles about the V-22 crashes, and the many issues that aircraft’s engines have experienced due to brown-out conditions when landing in sandy environments.

Cost.

VTOL is incredibly expensive.

There were companies shuttling passengers from Manhattan to the various airports using C-47 like helicopters, but others complained of the noise and it is difficult to land on the rooftop of a large building.

The V-22 offered some promise, but it also is very expensive and a commercial version is still a ways off.

Cost, it all comes down to money.

 Main reason: economics. a VTOL transport aircraft is just not economical in the commercial world.

 It takes a lot of fuel to take off vertically.

 The passenger carrying capacity of VTOL craft is considerably smaller.

Other, if lesser, problems exist:

1) The noise footprint is not trivial.

2) The design of VTOL craft is considerably more complex and problematic.

It is possible to enumerate more problems. The current thinking as you can see are hybrid craft like the V/STOL modes of the V-22 Osprey. The military need is there and advocates hope for the growth of a civilian market, but this has yet to prove itself. Other systems are used like the ski jump ramps on British aircraft carriers for Harriers to improve or one-time JATO bottles on C-130s (not likely to be used by civilians), but watch that space. Only time will tell. Watch for continuing use of the F-35.

Interesting thing is that there are companies working on this take-off procedure to be made possible with the passenger airliners .

I will show you the images and the design of the plane and leave links to the sites which you can refer to improve your understanding .

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 screen20shot202016-10-2620at203-59-3920pm

Hope you guys like it .

Comment your views and let me know. Also share this .

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2 thoughts on “Vertical Take-off Part -2

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