Hi,

 

Can we do automatic landings with a VOR Approach or RNAV Approach, just like an ILS?

 

Thanks

Edited September 10, 201411 yr by FloG
Remoevd excessive use of caps

From your previous topics I assume that you're talking about Airbus again.

As far as I am aware, no aircraft can do an automated landing (read: "can descend to the runway and touch down without pilot input") without an ILS. 

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Thanks a lot,

So only an ILS can do an automated landing; Why? Maybe because we are too high? Or not enough close or maybe it hasn't got that precision?

Thanks

Only ILS provides continuous vertical guidance down to the runway. VOR/DME and RNAV only provide altitudes for specific waypoints. How you navigate vertically between the waypoints is not defined. Some RNAV equipment will interpolate between the waypoints to provide a pseudo glide path display, but it's not truly continuous. The only other system that supplies continuos vertical guidance that I know of is MLS. And this is military and infrequently available at that. The space shuttle is the only aircraft I know that routinely used MLS, but hand flown.

Ok thanks, so there is no vertical guidance so it doesn't work, right?

Why not take the trouble to understand for yourself how ILS works and its different Categories?

 

http://en.wikipedia.org/wiki/Instrument_landing_system

Euh... Thanks a lot but I don't want to learn how does the ILS work, I just want to know why can't an Airbus not land automatically (AP1 + AP2) in a VOR APPROACH. Is it because there is no vertical guidance after the MDA? Thanks

Euh... Thanks a lot but I don't want to learn how does the ILS work, I just want to know why can't an Airbus not land automatically (AP1 + AP2) in a VOR APPROACH. Is it because there is no vertical guidance after the MDA? Thanks

 

A VOR approach has no vertical guidance.  An RNAV approach as you say only provides guidance down to the MDA.   It doesn't matter if it is Airbus or Boeing, you cannot autoland without a ILS signal. 

 

I would suggest taking the advice and understanding how ILS & RNAV approaches actually work.  Also read up on the difference between a Precision & Non Precision.

 

Regards

Thanks a lot, do you mean the Localizer signal? 

 

Thanks a lot!

Euh... Thanks a lot but I don't want to learn how does the ILS work, I just want to know why can't an Airbus not land automatically (AP1 + AP2) in a VOR APPROACH. Is it because there is no vertical guidance after the MDA? Thanks

 

If you'd learned how the ILS worked you know why Airbus not land automatically (AP1 + AP2) in a VOR APPROACH.

 

You might also understand the difference between ILS and VOR.

 

 

Euh... Thanks a lot but I don't want to learn how does the ILS work, I just want to know why can't an Airbus not land automatically (AP1 + AP2) in a VOR APPROACH.

 

Google these words "aircraft autoland", there is a wealth of information about 'autoland'. Especially why it is not the preferred method for landing even with a certified ILS system.

 

http://www.airliners.net/aviation-forums/general_aviation/read.main/1637892/

 

Above is an especially interesting read on the subject, with a lot of points of view on the topic. Pilots don't especially like it, except when it is the only way to get the aircraft on the ground.

 

ILS with a autoland system and a aircraft with autoland is a apple system. VOR is a orange system - very different.

 

No matter what aircraft you fly in the real world or in a simulator the first thing to learn, after the all important, getting off the ground part, is the visual approach - hand flying. If you have got that covered and just want to use the autoland then you have to forget about VOR, period.

 

Regards,

or RNAV Approach, just like an ILS?

Yes, it is quite possible one day we will have aircraft auto-landing in RNAV approach but right now it is not possible.

The right GPS/WAAS-RNAV (or its LAAS version) has all the elements to make such autoland happen,

but it will never be possible with a VOR signal.

Thanks, just made some researches with wiki:

Autoland is only with ils CAT 3b and 3c, right?

Thanks, just made some researches with wiki:

Autoland is only with ils CAT 3b and 3c, right?

 

No