Rapid Exit Taxiways
Thread Starter
Rapid Exit Taxiways
Hi,
Can someone point me to a reference in the jepps regarding max speed on a rapid exit taxiway.
Can't quite seem to find anything
Cheers
Can someone point me to a reference in the jepps regarding max speed on a rapid exit taxiway.
Can't quite seem to find anything
Cheers
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never heard of such a thing. Would be surprised there is one as ASI don't normally indicate til 35-40kts and as high as 60kts in larger aircraft. And that's pretty quick for taxiing.
The idea is you are still to control your speed so that you can stop at the hold line until you are cleared to do proceed.
The idea is you are still to control your speed so that you can stop at the hold line until you are cleared to do proceed.
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I have always believed its 60kts too, cannot think of a ref at the moment though.
I don't have my Jepps here just now, can someone have a look in Introduction - definitions ?
It may be there I think.
I don't have my Jepps here just now, can someone have a look in Introduction - definitions ?
It may be there I think.
Last edited by Captahab; 27th Feb 2011 at 03:21.
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Don't know if you will find the answer in JEPPs, but it could be in the Manual of Aerodrome Standards ( I think that's is name). It's the manual used by CASA and airport owners and it covers everything to do runways and taxiways. Try a search on the CASA site for it.
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AERODROME STANDARDS ICAO (not Jepps 
)
275 m where the code number is 1 or 2;
to enable exit speeds under wet conditions of:
93 km/h (50 knots) where the code number is 3 or 4; and
65 km/h (35 knots) where the code number is 1 or 2.
3.8.16 The radius of the fillet on the inside of the curve at a rapid exit taxiway shall be sufficient to provide a widened taxiway throat in order to facilitate early recognition of the entrance and turn-off onto the taxiway.
)Rapid exit taxiways
...
...
3.8.15 A rapid exit taxiway shall be designed with a radius of turn-off curve of at least:
550 m where the code number is 3 or 4; and275 m where the code number is 1 or 2;
to enable exit speeds under wet conditions of:
93 km/h (50 knots) where the code number is 3 or 4; and
65 km/h (35 knots) where the code number is 1 or 2.
Note.
The locations of rapid exit taxiways along a runway are based on several criteria described in the ICAO Aerodrome Design Manual, Part 2, in addition to different speed criteria.3.8.16 The radius of the fillet on the inside of the curve at a rapid exit taxiway shall be sufficient to provide a widened taxiway throat in order to facilitate early recognition of the entrance and turn-off onto the taxiway.
3.8.17 A rapid exit taxiway shall include a straight distance after the turn-off curve sufficient for an exiting aircraft to come to a full stop clear of any intersecting taxiway.
3.8.18 The intersection angle of a rapid exit taxiway with the runway shall not be greater than 45° nor less than 25° and preferably shall be 30°.
3.8.18 The intersection angle of a rapid exit taxiway with the runway shall not be greater than 45° nor less than 25° and preferably shall be 30°.
Thread Starter
Oh, I just used the search function and what do you know... 
http://www.pprune.org/dg-p-general-a...-how-fast.html
It is quite some years old though. Someone suggests as Captahab did that it is in the definitions of the Introduction section in the jepps. There is a definition, but no speed limit. Did it used to be stated here?
http://www.pprune.org/dg-p-general-a...-how-fast.html
It is quite some years old though. Someone suggests as Captahab did that it is in the definitions of the Introduction section in the jepps. There is a definition, but no speed limit. Did it used to be stated here?
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Jepp's used to say (about 15years ago) High speed exits were designed for speeds up to 50 kts, recently I thought I would chk this again but couldnt find a ref....!... it may be lurking in there somewhere.
Some young blade with 8 hours to kill should be able to find this...or not..?
Some young blade with 8 hours to kill should be able to find this...or not..?
My Co. SOP's quote 60kts initially reducing to std taxi speed of say 15 kts by the taxi-way.
I would think that any SOP's saying such speeds where not just plucked out of the air (pun not intended)
Wmk2
I would think that any SOP's saying such speeds where not just plucked out of the air (pun not intended)
Wmk2
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Jeppesen "Introduction" Reference Page 6 27th July 07.
"HIGH SPEED TAXIWAY / TURNOFF (HST) —
A long
radius taxiway designed and provided with lighting or
marking to define the path of an aircraft, traveling at
high speed (up to 60 knots), from the runway center
to a point on the center of a taxiway. Also referred to
as long radius exit or turnoff taxiway. The high speed
taxiway is designed to expedite aircraft turning off
the runway after landing, thus reducing runway occupancy
time."
marking to define the path of an aircraft, traveling at
high speed (up to 60 knots), from the runway center
to a point on the center of a taxiway. Also referred to
as long radius exit or turnoff taxiway. The high speed
taxiway is designed to expedite aircraft turning off
the runway after landing, thus reducing runway occupancy
time."
we were trained for 60kt, (not clear if IAS or GS, but GS makes more sense) but 50 at YSSY.
The rapid exits at Sydney do seem to be a little less suitable for truly rapid exit.
The rapid exits at Sydney do seem to be a little less suitable for truly rapid exit.
I knew they were rated for 60kts but I'd never try it that fast in a 747. I think on a light landing I took one in the high 40's though, not sure. The things roll around a fair bit with lateral load on them and there's not a lot of pod clearance on the inner engines with more than about 5deg of roll with the struts compressed.
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The standard speed is as defined before by Jepp (The taxiway is DESIGNED to take the aircraft at a speed of 60 kts, not taking into account wet runway etc). The 50kt limit at SYD used to be printed on the aerodrome chart but disappeared a few years ago.
