Quote:
Originally Posted by SEL
A few found fireworks nose cones that fit pretty well on model rocket tubes.
From left to right: LT125 (also fits ST13 ), BT20 and BT60.
The LT125 and BT60 cones are flush with the OD of the tubes. I used a piece of LT115 tube to fit the LT125 and a JT-60c coupler for the BT60.
The BT20 cone fit over the tubes.
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Thank you for posting that picture, and your description of their sizes and how they fit--or are fitted to--their respective body tubes! Nose cones like these are just the sort (I recognize some of them from skyrockets) that would be useful--and cheap, when one can get them separately in some quantity--for demo models, school/scouts/other youth groups model rocketry projects, and "fun-fly" models, etc. Also, they're made of more flexible plastic, so that recovery system failures (especially partial ones, where a parachute ejects but doesn't open, or only the nose cone pops off at ejection due to a jammed 'chute or streamer) are less likely to cause damage, and:
For mini motor rockets, nose cones from 1 ounce skyrockets (here are some:
http://www.tntfireworks.com/firewor...t-assorted-8-oz ), similar-size firework missiles, and perhaps even--if large enough ones are made--ammunition "snap caps" (plastic "simulated bullet" cartridges that are used for "dry-firing" practice) could be used as model rocket nose cones. Making a quick Google search, here are firework missile and rocket items with plastic nose cones (or nose cones *and* fin units), some of which I've never seen before; they are:
"HUGE Saturn Missile Battery" (its missiles are about BT-20/ST-7 size, with "Big Bertha"-like elliptical nose cones):
www.musiclessons.com/youtube/watch?v=Ou-3d74KiWE
"Wolf Pack Missiles" (these have conical nose cones, Iris-like fin units, and dual-rod launchers):
http://ferrebeekeeper.files.wordpre...14/07/l-017.png
"7 inch Warhawk Missiles" (the missiles have nice swept fin units and radiused-tip conical nose cones):
http://keystonefireworks.com/shop/7-warhawk-missiles/
"12 inch Warhawk Missiles" (a 12" version of the 7" Warhawk Missile, these have 5:1 ogive nose cones and tubes wider than their fin units):
http://keystonefireworks.com/shop/12-warhawk-missiles/
"12 inch Europa II Missile" (these look very much like the "12 inch Warhawk Missiles," but their fin cans are sized to fit their larger body tubes):
http://www.fireworks.com/products/i...-missile-l-018/
"7-inch Neptune Missile" (these have short conical nose cones and six-finned fin units that resemble the Petrel sounding rocket's fin assembly):
http://redrhinofireworks.com/6-inch...ne-missile.html
"7 inch Missile" (resembling the "7 inch Warhawk Missile," their fins are more 'angular'):
www.wildwillysfireworks.com/products/7-missile