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What are some of your techniques to aid in non ILS landings?


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Posted

I've flown U.S. aircrafts like the F/A-18 and having a Velocity Vector on the HUD makes it very easy to land the plane. The ILS is very functional in the SU-27 making landing easy as well, but when flying without it landing can be a problem. Judging the sink rate of the SU-27 and calculating the distance to the threshold of the runway all adds up to some tough landings w/o ILS.

What are some of your techniques to aid in non ILS landings?

Thank you.

Posted

I would guess you mean in bad weather, as in clear blue skys its not really neccecery to have an ils approach IMHO, landings in low visibillity situations are always hard, espessially without ils, so I guess u'd have to either go to your alternate airport, or have a go at it, and go around at minimal if u dont ahve the runway in sight.

 

If you mean to land the plane in clear blue skys without ils, I would suggest an approach airspeed of around 350-320km/h, deending on your weight, and toutchdown at 280-300km/h, also depending on your weight. If u keep within this speed and keep a reasonable heigt from the runway, u'll be fine. I always land with airbrakes out, and my throttle around 85-87% on approach, then reduce to idle right before toutchdown.

 

Hope this helps!:thumbup:

Posted

There's VVI gauge (vertical velocity indicator) and AoA (angle of attack) so in case of HUD failure or ILS failure these two come in very handy. Just make sure your VV does not exceed -3m/s upon touchdown!

[sIGPIC][/sIGPIC]

Posted (edited)

Thanks for all your responses however that was not what I was referring to exactly.

 

In the F-15 for example there is an indicater on the HUD in the shape of a small circle called the velocity vector. This circle shows exactly where your air frame is going, given rate of decent, rate of side slip and speed. In fact if you take the angle between the velocity vector and where your nose is actually pointing [longitudinal], that would equal your angle of attack. When landing your plane without ILS, having the velocity vector pointing on the threshold of the runway will give you the glide slope neccessary to make a perfectly controlled landing without having ILS, as we know in LOCON FC you must approach from a specific direction to pick up the ILS, if not you will not have it.

Landing visual I find that I need to approach the runway quite high and then do a brakes on decent and flare over the runway. If I try to do a normal controlled approach without ILS, I find due to sink rate, my plane usually will end up landing short of the runway then I need to go after burners in a panic climb. Yes I do read the rate of decent guage to make sure its a soft landing when I do touch down but knowing your rate of decent doesn't do much for flying a glideslope that will touch down on threshold of the runway. Of course knowing the distance to the runway could allow you to do some calculations by dividing your rate of decent into your altitude and adjusting for the distance...this would put you right on the money. So I was curious if anyone had found some easier way to calulate a nice contolled approach rather than doing a drop down over the runway and flare?

Commercial airline pilots using visual approach use the following technique; they use the top of dash board as a 'sight' and aim it at the runway. The runway should always stay sighted by the dash. if the runway starts to rise above the dash then you are below glideslope, if the runway starts to drop below the dash then you are above glipeslope...it isn't as easy as it sounds.

Edited by fitness88
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