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Deciphering Flutter Prevention Criteria Report

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TinBender

TinBender

Well-Known Member
Joined
Mar 4, 2010
Messages
218
Location
Charlotte, NC, USA
I am looking at Airframe and Equipment Engineering Report No. 45 Simplified Flutter Prevention Criteria for Personal Type Aircraft.
http://handle.dtic.mil/100.2/ADA955270
I haven't used a typewriter in about 25 years. I can't remember for sure, but I think the older ones didn't have + signs. Are the drawn in "things" plus signs in this equation? These symbols are found on page 15 and 18. There are normal looking drawn-in + signs elsewhere in the report.

equation.PNG
Any insight would be appreciated.
 
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