Re: 747 hump

Date:         16 Sep 97 02:35:25 
From:         Marc Schaeffer <marcmsc@geocities.com>
Organization: None
References:   1 2
Next article
View raw article
  or MIME structure

David Lednicer wrote:
> Actually, the hump slightly improves the drag of the 747.  If the hump
> wasn't there, the cross-sectional area distribution would have a chunk
> missing and the wave drag would be higher.  I have data showing that the
> extended hump on the 747-300 and -400 improves the area distribution
> slightly, further reducing wave drag.

Very interesting, do you have drag values for the following :

- 747-000 (747 without the hump)
- 747-100/200
- 747SP (to compare the effect of the length vs. the -100)
- 747-300/400

They need not to be absolute values, relative values would be fine.

Brgds,
...........................................................
Marc Schaeffer, Luxembourg // mailto:marcmsc@geocities.com
---->>>>> Check out my aircraft homepage <<<<<----
WWW  http://www.geocities.com/CapeCanaveral/Lab/8803/