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Climb Rate And Distance From LHR  
User currently offlineBa97 From Canada, joined Apr 2004, 377 posts, RR: 0
Posted (11 years 4 months 2 weeks 1 day 2 hours ago) and read 4508 times:

I fly in and out of LHR regularly and have been trying to figure out where we are when we hit our cruise height.

Question 1: I gather we must sit at some intermediate altitude for some distance out and then climb to the cruise altitude. I did a search, Google and here, trying to chase tracks and data but I have only found climb rates from take off or comparisons of climb rates. The route to YYZ usually takes us towards Nottingham and then to parts unknown. Where could I find such information?

Question 2: When I flew Concorde to YYZ we sat at approx 25,500 to the Bristol Channel then went supersonic. I saw on the dials we rocketed up in speed and height once they announced the reheats coming on. What I could not figure out (champagne and excitement) where we were geographically when we hit 54,000 and Mach 2. I know from the way points (correct term?) we cut around the south of Ireland and up to lat 54 before turning west (EGLL CPT UG1 SL2 MALOT 54N20W ...) Anyone know where the general point would have been that we hit cruise height?


there is economy class, business class, first class...then Concorde..pure class
6 replies: All unread, jump to last
User currently offlineGeoffm From United Kingdom, joined Feb 2004, 2111 posts, RR: 6
Reply 1, posted (11 years 4 months 2 weeks 13 hours ago) and read 4302 times:

1. Yes, to save fuel apparently. As the plane gets lighter, they ascend to higher altitudes.

2. Namedropper! This is quite interesting reading: http://pub13.ezboard.com/fconcordesstfrm10.showMessage?topicID=351.topic although it doesn't answer the question of where you would have been, once reaching cruising altitude. I have seen maps online but can't find them.

Geoff M.

User currently offlineGoinv From United Kingdom, joined Jan 2005, 264 posts, RR: 2
Reply 2, posted (11 years 4 months 2 weeks 12 hours ago) and read 4301 times:

Your exact location would vary - depending upon routing, type of aircraft and ATC restrictions.

I have flown LTN-GVA and spent the first 20 minutes (or so) below 6000 whilst they skirted us around the outskirts or London.

As Geoffm says, it also depends upon aircraft weight. Once I flew LHR-JFK and we climbed from FL310 to FL 350 after about 3 hours into the flight.

As a rule, I would probably say you are somewhere over Ireland

Be who you are, The world was made to measure for your smile. So Smile.
User currently offlineBa97 From Canada, joined Apr 2004, 377 posts, RR: 0
Reply 3, posted (11 years 4 months 2 weeks 10 hours ago) and read 4279 times:

Thanks folks- interesting read. I was looking for the maps on ebay but recently none to be found. I was not sure if the maps would show the distance covered from 25K to 55K altitude cruise.


there is economy class, business class, first class...then Concorde..pure class
User currently offlineSpencer From United Kingdom, joined Apr 2004, 1642 posts, RR: 15
Reply 4, posted (11 years 4 months 2 weeks 9 hours ago) and read 4314 times:

Yes, depending on type it could differ by hundredes of miles. The difference between the 146 and, in your instance, Concorde, aren't even worth comparing. Then there's the Oceanic Entry Points, if you're Canada-bound as you say. Sometimes ex LHR traffic bound for pond hopping will travel Northwards towards Scotland, other times due to pervailing winds, a Westerly track will be taken, such as UG1 towards Brecon. I've been on many flights to the US and found myself at cruise altitude or there abouts near I.O.M. (747 eqpt).

EOS1D4, 7D, 30D, 100-400/4.5-5.6 L IS USM, 70-200/2.8 L IS2 USM, 17-40 f4 L USM, 24-105 f4 L IS USM, 85 f1.8 USM
User currently offlineXXXX10 From United Kingdom, joined Jan 2000, 779 posts, RR: 0
Reply 5, posted (11 years 4 months 1 week 1 day 10 hours ago) and read 4137 times:

Each flight is different
I believe that the ill fated Lockerbie 747 had only just reached its cruising height almost 300 miles from LHR

I have been on 757's reaching Fl 250 10 -15 minutes after take off.

Concorde is slightly different and flies the most efficient profile it can once it is supersonic. The acceleration starts in the Bristol channel about 150 miles west of LHR I would guess that Accel to Mach 2 uses another 200 -300 miles (it takes about 15 mins)

Mach 2 usually equates to FL 500 once at Mach 2 Concorde will cruise climb climbing and descending between FL 500 an FL 600 depending on the weight.

User currently offlineBa97 From Canada, joined Apr 2004, 377 posts, RR: 0
Reply 6, posted (11 years 4 months 4 days 5 hours ago) and read 3987 times:

thanks. I was trying to figure out where Concorde would be when it hit Mach 2 and 55,000 or so. I can work the math out (acceleration curve) using 15 minutes from 25,000 and some point in the Bristol channel

there is economy class, business class, first class...then Concorde..pure class
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