Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > Work Bench > Rocket Boosted Gliders
User Name
Password
Auctions Register FAQ Members List Calendar Today's Posts Search Mark Forums Read


 
 
Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 07-12-2016, 09:17 PM
Rich Holmes's Avatar
Rich Holmes Rich Holmes is offline
Born Late Rocketeer
 
Join Date: Jul 2013
Location: Syracuse, NY
Posts: 568
Default Stab over/under

In case the following questions don't make it plain, my understanding of rocket glider design is pretty minimal, and my experience building them is zero, so please bear that in mind...

I'm building Geoffrey A. Landis's Nymph rocket glider. It was written up in the March 1974 Model Rocketeer, which I've downloaded from the NAR site. There also used to be a redrawn (in 2002 by Wolfram von Kiparski) plan on the NAR site; it's evidently not there any more but can be found on the Wayback Archive at http://wayback.archive.org/web/2013...s/pdf/nymph.pdf.

There are some slight differences between the two plans, the most significant being that the 1974 article shows the stab mounted on top of the fuselage boom while the 2002 plan has it underneath. I would assume on top was Landis's actual design even if it weren't for the photos accompanying the article, which are not the world's clearest but I think there's no question they show the stab on top.

But then that raises two questions: Why didn't von Kiparski draw it that way... and why did Landis write 'put one 1/8" long piece of launch lug under the wing, one over the stab, and it's built'? Maybe I'm reading too much into one preposition but to me that description of the launch lugs arrangement doesn't make any sense if the stab is on top of the fuselage.

Of course there's a third question (possibly related to the first): Regardless of how Landis designed it, is there a good argument for doing it differently?
__________________
Rich Holmes
Camillus, NY
Secretary / newsletter editor
Syracuse Rocket Club

http://richsrockets.wordpress.com
Reply With Quote
 


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump



All times are GMT -5. The time now is 01:45 PM.


Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe 1998-2019