Speaknoevil
Well-Known Member
- Joined
- Mar 18, 2018
- Messages
- 1,144
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More deals please, where do you plan on launching from, what type of recovery system?
No upper Midwest waiver, so at Airfest. Recovery is drogue streamer and Fruity Chutes Iris 36" for HED main. Minimum dimension half/inset-style av-bay utilizing Raven 3 and TeleGPS.
Looks good, obviously you realized that I meant to say more "details" please and not more deals, darn auto correct on my android. What does she weigh in at and how did you do your fin design, T2T, carbon, etc.?
Purpose built for Loki 54/4000. Minimum diameter, minimum length.
What load are you flying ?
Eric
Out of curiosity, with min diameter HPR builds, are the most accepted ways of securing fins either through carbon/fiberglass, welded, or a fincan?
For commercial motors the majority are either fiberglass or carbon composite construction. We also see metal fins which are bonded to composite body tubes or fin cans attached to composite body tubes.
For high altitude research flights, construction with fins connecting directly to aluminum motor cases are allowed. Most commonly thats done with special surface preparation and epoxies.
Welding of fins to motor cases has been tried, but warping and other effects of heat must be considered. Mike Fisher (Binder Design) used an interesting approach using a low temperature special zinc alloy solder/brazing compound (https://www.alumaloy.com I think), but I dont remember how well that turned out.
Steve Shannon
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