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-   -   How do you enter hold using tear drop entry in a jet?! (https://www.pprune.org/questions/583801-how-do-you-enter-hold-using-tear-drop-entry-jet.html)

Turbavykas 1st Sep 2016 08:59

How do you enter hold using tear drop entry in a jet?!
 
If you enter holding pattern using tear drop entry method it is not possible to turn back in that space provided by 30 degrees!!! It takes for ever to make a turn at 25 bank angle!
I use simulator, but it should be accurate. Say FL200, speed 265 knots, hold on 330 radial, right turns. If I start tear drop entry on 300 radial going outbound for 1.5 minute and I start right turn. It takes ages to make a turn and this speed and 25 degrees of bank. By 330 radial nose points near 90 degrees of!
Even speeds like 200 knots don't work as TAS is high and radius depends on TAS. Around 140 knots is required and that's probably slower than stall speed!

eckhard 1st Sep 2016 15:43

Try 40 degrees offset.

Driver 170 1st Sep 2016 19:13

Doesn't pilots use the easiest method to enter a hold? So why not use the easiest method without complicating things further? How about direct entry of parallel entry...

Tu.114 3rd Sep 2016 09:55

The speed of 265 knots You mention strikes me as rather high for a holding. You will end up with a way smaller turn radius if You use lower, more typical holding speeds. Do try the green dot speed (Vy if I remember correctly), this will not only make the entry easier but also provide remarkable fuel savings and therefore a way longer endurance. All good things to have when holding...

Chesty Morgan 3rd Sep 2016 09:59

20k to 34k holding speed is 265kts.

Intruder 5th Sep 2016 18:53

That is MAX ALLOWABLE holding speed, not necessarily the speed you should be using...

Chesty Morgan 5th Sep 2016 19:54

Yes, but that was the speed in the OP'S question and is obviously not "rather high" for holding.

AerocatS2A 6th Sep 2016 00:25

How often do you have to do a sector entry above FL200 though? We are lucky enough not to have to do much enroute holding in Australia, but when I have it has always been a direct entry because the holding pattern is aligned with the airway.

5LY 6th Sep 2016 12:50

There is no requirement that you be established on the 330 radial inbound on your first turn. Your offset is to get you positioned so that as you come over the fix a rate one turn will place you correctly. The moment you come over the fix from your offset maneuver is when you are entering the hold and it is from that point that you should be able to fly the correct pattern.

Piltdown Man 21st Sep 2016 07:57

I'm not surprised it takes forever as your ground speed is likely to be around 370 Kts. Get the speed down to minimum clean and you will use considerably less space. But the more interesting question is why are you holding at this level and speed?

5LY 22nd Sep 2016 12:24

RTFQ!!!!!!!!

Amadis of Gaul 22nd Oct 2016 00:17

Just do what the FMS says.;)

sycamore 23rd Oct 2016 12:47

Max speed for FL200(inclusive) is 240kts ;zone of `flexibility +- 5* on radials`..

aterpster 24th Oct 2016 15:04

sycamore:



In the U.S. the maximum is 265 KIAS above 14,000. Where a climb in hold is charted (generally on some missed approaches the maximum is 310 KIAS).


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