I'd send it, but there will be some flutter. I don't think your fins will come off. Take a video
I am curious though ... do your wide-span1/8 inch G10 fins flex when you try to bend them ?
Fins will buzz but stay on with this motor, I think.
Ahhh....the question of the day...back to Flutter! Oh, so esoteric, our boundaries.
TAP (for level 2) says don't worry about flutter until Mach. Standard Atmosphere Mach = 791mph. Prescient, I think, given the below analysis. Experience and RW results trump "science."
From
Flutter tools for you..., Duncan McDonald (DMcD) used a flexural modulus and Poisson value that I think are incorrect. However, based on his model, he collected anecdotal evidence of shred speed being 220% of Vf based on NACA TN4197 and his Flexural/Shear modulus. Using his Flexural Modulus and Poisson values (which he based the 220% on, this rocket), this rocket should not shred below 807.4 mph.
Applying the 220% to lower Vf values reached by MarsLander and Bennett (
https://www.apogeerockets.com/education/downloads/Newsletter615.pdf), and associated spreadsheet, shred velocity is still well above noted velocity with the K695R.
Bennett agrees with my Poisson value, but equivocates on the flexural modulus and notes..."
If we search the Internet for data pertaining to the shear modulus of G10 or G12 fiberglass, we will obtain values ranging from 425K to 1.7M psi (or the equivalent SI values). Experimental direct measurements report values near 775,000 psi (5,343,436 KPa). This number is also approximately the median of many reported and calculated values for both fiberglass and carbon fiber composites."
HOWEVER, he then uses 600,000 as his recommend shear modulus, "
Allowing for margin."
Ignoring his margin allowance, and using the "measurements report values near 775,000," we get summary 220% of Vf as the shred boundary.
I'm inclined to base everything on Duncan McDonalds calculations and shred boundary, because his real world comparison (220%) is based on HIS shear modulus.
Maybe I will give heads up to the RSO....and SEND IT!
I have the shroud for the video camera...still debating if I'm willing to drill the holes into this rocket, just for the video.