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


Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 01-29-2017, 11:18 AM
burkefj's Avatar
burkefj burkefj is offline
Craftsman
 
Join Date: Feb 2009
Posts: 462
Default Pegasus RC RG

I've been thinking about this one for a while, but didn't think I could get something flyable with the small wing the Pegasus launch vehicle has, and with the weights of components. However my recent learnings with my Mace I thought I could get something done under 11 oz with maybe a passable look and glide.

So, I scaled the wing up of course, took a crack at boost CG and moved things around in openrocket and my rc cg programs and decided on placement of components. The wing sits on sort of a platform, so I faked that with some little extensions in front and rear of the wing, with some reinforcing gussets below. Idea was to look like pegasus but be light. There seems to be a number of tail shapes and configurations in the photos I've seen, I chose one with a horizontal stab so it would match what I'm doing for the controls. Most of the photos show the fins at 120 degrees to each other, but the ones flown off of the B-52 I found were at 90 degrees to the vertical stab. Wing area is right at 1 sq foot.

Came in right at 10.75 oz, first test flight was a tiny bit pitchy on boost, but glide was much better than expected. I added 5 grams to the nose and it was very stable on boost, with a very decent glide, landing speed is faster than my others due simply to the wing loading but the drag is fairly low.

I'm hoping Stickershock can do justice to the rest of the markings.

38" long, 22" wingspan, BT-80 lightweight tubing from bms.
Attached Thumbnails
Click image for larger version

Name:  WP_20170127_21_03_05_Pro.jpg
Views: 28
Size:  336.9 KB  Click image for larger version

Name:  WP_20170127_20_35_59_Pro.jpg
Views: 22
Size:  288.1 KB  Click image for larger version

Name:  WP_20170127_23_29_12_Pro.jpg
Views: 34
Size:  347.0 KB  Click image for larger version

Name:  WP_20170129_08_58_11_Pro.jpg
Views: 42
Size:  341.7 KB  
__________________
RC Rocket glider kits
www.dynasoarrocketry.com
Reply With Quote
  #2  
Old 01-29-2017, 11:37 AM
AstronMike AstronMike is offline
Craftsman
 
Join Date: Sep 2007
Location: Lakeland, FL
Posts: 224
Default

Ahh, nice, another 'Bomarcish' glider, done with BT80 and light parts.

Keep 'em coming, Frank!
Reply With Quote
  #3  
Old 01-29-2017, 06:02 PM
burkefj's Avatar
burkefj burkefj is offline
Craftsman
 
Join Date: Feb 2009
Posts: 462
Default

Thanks Mike, here are some flights from this morning.

http://www.youtube.com/watch?v=UHHO...eature=youtu.be
__________________
RC Rocket glider kits
www.dynasoarrocketry.com
Reply With Quote
  #4  
Old 01-30-2017, 08:19 PM
Vanel Vanel is offline
Master Modeler
 
Join Date: Jun 2005
Posts: 878
Default

Nice!
__________________
Up next:
Under construction:
Under repair:
In finishing: Centuri Sabre clone
In primer:
In paint:
Ready for decals:

Bill Cooke
NAR #31312
TRA #19705
SAM #0001
Huntsville, AL

My rocket blog
My rocket fleet
Reply With Quote
  #5  
Old 01-30-2017, 09:21 PM
A Fish Named Wallyum A Fish Named Wallyum is offline
BP Mafia
 
Join Date: Mar 2005
Location: Ft. Thomas, KY
Posts: 8,596
Default

Quote:
Originally Posted by burkefj
Thanks Mike, here are some flights from this morning.

http://www.youtube.com/watch?v=UHHO...eature=youtu.be

Wow! Very cool!
__________________
Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

Build floor: Centuri Design Contest F-150 Hurricane Estes - Low Boom SST Semroc - Gee'Hod, Shrike, SST Shuttle

In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Solar Sailer II Semroc Cyber III

Ready to fly: Estes - Multi-Roc, Solar Sailer II Semroc - Earmark, Snake Jumper
Reply With Quote
  #6  
Old 01-30-2017, 10:19 PM
mojo1986's Avatar
mojo1986 mojo1986 is offline
Old Canuck Modeller
 
Join Date: Mar 2005
Location: Kingston, CANADA
Posts: 2,160
Default

Frank, everything I've seen you do in this area of rocketry is just so exceptional! Something I'd love to see you do sometime..............an upscale (BT80?) version of the old Estes Sky Dart. For sheer grace and beauty, classic lines, nothing has, in my opinion, ever outdone it. Not sure whether it's feasible for you, but if you could do it, it would REALLY ROCK!

Joe

PS............the only other bird that approaches it for beauty is the real life Concorde (which the Sky Dart resembles).
Reply With Quote
  #7  
Old 01-31-2017, 10:14 AM
burkefj's Avatar
burkefj burkefj is offline
Craftsman
 
Join Date: Feb 2009
Posts: 462
Default

Thank you!

I did do a skydart style kit for two folks that used the wing I use for my StratoDart kit below but mounted on the top of the 2" tube like the skydart and with a standard ogive nose cone.....I didn't do a wider shorter chord skydart wing because i didn't think there would be enough interest, and I would have had to build a new prototype to figure out CG etc, so I used my kit as a start and just moved the wing to the top and the CG stayed the same.

For my StratoDart kits I prefer the mid mounted wing, it's simpler, the drag is more centered and I can use a center mounted motor, and I can cut the wing differently to fit into the boxes with only one joint, uses less carbon etc....I've done two versions of my StratoDart kit, one with a skydart style tail and the latest one uses a concorde style tail...and it comes with the interceptor cone. I think it looks better than the skydart but that's just me.
Attached Thumbnails
Click image for larger version

Name:  e6495dd115e43cff635b58a0cd25c297.jpg
Views: 23
Size:  105.3 KB  Click image for larger version

Name:  WP_20161221_20_08_29_Pro.jpg
Views: 22
Size:  377.7 KB  
__________________
RC Rocket glider kits
www.dynasoarrocketry.com
Reply With Quote
Reply


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 12:37 PM.


Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe © 1998-2024