Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
DC-7C, Britannia, And LCNs  
User currently offlineNZ8800 From New Zealand, joined May 2006, 425 posts, RR: 2
Posted (7 years 6 days 10 hours ago) and read 1476 times:

I noted with interest when researching a project on RNZAF Station Whenuapai/Auckland Airport; that though the Britannia carried more people than the DC-7C (up to 139, compared to 86 - 103); it had an LCN of 40 - exactly the same as the airport's runways; and the DC-7C had a LCN of 55. This made CAA very hesitant about allowing them into Whenuapai at all, but they were allowed to land there twice weekly as of 1960.
Question - if the DC-7C had 10 wheels like the Britannia, rather than the five it had, would this have made its LCN lower?
To my mind it would, but I am not a professional pilot, or engineer, and there are probably other complicated factors involved.

(To add a little to the problem, Whenuapai's runways were/are made of intersecting hexagonal concrete blocks, which are not cemented together, although the main runway does have a tarmac overlay since 1962).


MDZWTA ~ Mobile Disaster Zone When Travelling Abroad
3 replies: All unread, jump to last
 
User currently offlineJetlagged From United Kingdom, joined Jan 2005, 2532 posts, RR: 24
Reply 1, posted (7 years 6 days 4 hours ago) and read 1448 times:

It's all about how the load is spread across the concrete surface. That would depend on the aircraft weight, the number of wheels, how the aircraft weight is distributed between mains and nose, and the tyre pressures. You are probably right in that if the DC-7C had more main wheels its maximum allowable LCN would reduce. Reducing tyre pressure would have increased contact area and so spread the load more too.

A civil engineer would be able to answer this question in more detail.



The glass isn't half empty, or half full, it's twice as big as it needs to be.
User currently offlineViscount724 From Switzerland, joined Oct 2006, 24075 posts, RR: 22
Reply 2, posted (7 years 5 days 21 hours ago) and read 1430 times:

Reference to the Britannia and DC-7C at Auckland Whenuapai reminded me of the following photo:


View Large View Medium
Click here for bigger photo!

Photo © Colin Hunter



User currently offline411A From United States of America, joined Nov 2001, 1826 posts, RR: 8
Reply 3, posted (7 years 5 days 19 hours ago) and read 1412 times:

The DC-7C could be ordered and equipped with optional low pressure tires, for limiting runways.

Top Of Page
Forum Index

Reply To This Topic DC-7C, Britannia, And LCNs
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Relationship Between DC-8 And DC-9 Fuse posted Sun Nov 26 2006 10:44:45 by Speedracer1407
Difference Between A DC-8-71 And A -73 posted Tue Jul 25 2006 02:23:39 by Jeffry747
DC-9 And MD-8 Fuel Consumption posted Thu Feb 23 2006 06:04:22 by Rottamo
AC And DC Motors Used On Aircraft posted Sat May 14 2005 15:14:23 by Matt72033
DC-10 And L-1011 Tail Engine Designs And Mounts posted Wed Jan 5 2005 13:21:24 by Thrust
DC-8s And No APU posted Wed Mar 10 2004 10:04:51 by Pilotpip
Dc 10 And MD 11 Differences posted Wed Oct 8 2003 18:41:35 by Bongo
DC-10: The Relation Between Ailerons And Gear posted Thu Nov 14 2002 15:23:48 by LMML 14/32
A300's And DC-8's Up In Under 7000ft.! posted Wed Jun 19 2002 08:21:08 by Kcle
DC-8-10 And -20 Mtogw posted Sun Feb 17 2002 16:31:46 by Blackbird

Sponsor Message:
Printer friendly format