Ye Olde Rocket Forum

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

Thread Tools Search this Thread Display Modes
Old 06-02-2018, 04:13 PM
AHamm AHamm is offline
Junior Rocketeer
Join Date: Jun 2018
Posts: 1
Default Upper stage without fins

I am planning to make a 2 and mabe 3 stage rocket. Is it possible to not have fins on the upper stages? Could I angle the fins on the booster stage so that they give the rocket a spin which would help stabilize it? I know that some real rockets have no fins or only fins on the lower stage, but they use thrust vectoring and are often in thinner/no atmosphere.

Last edited by AHamm : 06-02-2018 at 04:15 PM. Reason: Typo
Reply With Quote
Old 06-02-2018, 09:43 PM
ghrocketman's Avatar
ghrocketman ghrocketman is online now
Join Date: Jul 2005
Location: Michigan
Posts: 11,293

Canting the fins on the booster to induce spin would help to stabilize a finless upper stage, but I doubt it would be enough to prevent a wacky flight.
It might work for a two stager but definitely not 3.
When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL
, if you have to ask what is "NORMAL" , you probably aren't
Reply With Quote
Old 06-03-2018, 12:25 AM
GlenP's Avatar
GlenP GlenP is offline
Join Date: Dec 2015
Location: NAR BEMRC #627
Posts: 132

Sure, why not? Just include a transition instead of fins on the sustainer, i.e. a cone fin with base drag stabilization. Could omit the cone and just use a base-drag disc fin, much higher drag.


There might be an option to use a gas stabilization, sort of a variation on the theme of an Augie with the engine inside of a vented ring fin, essentially.
Reply With Quote
Old 06-04-2018, 10:52 AM
kevinj kevinj is offline
Not so Junior
Join Date: Apr 2009
Posts: 382

If you have the room in the second stage, you can add flip out fins that are hidden inside the model until it stages.

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 08:53 PM.

Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe 1998-2021