Water Ingestion & Brushless Motors
Hi All
Our club is investigating what could have potentially ben a quite serious accident with a members plane coming down and narrowly missing people and cars.
Eyewitness accounts suggest the motor was cycling on off rapidy just prior to impact and there is a suspicion that water may have enterd the front cowling ( YAK55D ) and been ingested or somehow entered the brushless outrunner.
Flying conditions were a moderate drizzle at the time, so some water entering the cowl/motor seems possible.
My question is how is a brushless outrunner affected, if at all, through exposure to such ' drizzle ( lets ignore an obvious 'drenching' say in heavy rain )...is it something to be avoided, how does a problem manifest itself ( ie does the motor cycle on and off as observed ?) ?
Thnaks in advance - DinoR