Don't you just hate it when the propeller departs the aircraft?

On Wednesday, December 18, 2013 8:33:51 PM UTC-7, Morgans wrote:
"Dave Nadler" wrote in message

...

A prospect was checking out the nifty Antares 18T

sustainer system somewhere over the forest west of ZWB,

when to his great surprise, the propeller departed.

Hell of a way to impress a prospect.



The problem is with the Solo propeller shaft with the

belt reduction system as used on, IIRC:

- Ventus CM (not V2)

- Duo T

- DG-100T

I'll bet any money the problem will turn out to be torsional harmonics.



Remember the problem with the BD-5? Some excellent research was developed

out of the problems of using a 2 cycle engine in that aircraft.



Seems I remember that one fix involved a sprag clutch (one was slipping) to

get over the torque reversal at some rpms.

--

Jim in NC


Russia AC-5m's have had some prop departures due to broken shafts. I believe one resulted in a fatal at North Las Vegas about two years ago. Inspections have uncovered cracks in others. IIRC, there was a fix worked.

Frank Whiteley

Not at North Las Vegas (VGT). Perhaps you refer to the Russia that went down about 70 miles north of Tonopah at Kingston NV.
IIRC he tried to bail but had problems.

BT

On Thursday, December 19, 2013 4:47:20 PM UTC-7, Bill T wrote:
Not at North Las Vegas (VGT). Perhaps you refer to the Russia that went down about 70 miles north of Tonopah at Kingston NV.

IIRC he tried to bail but had problems.



BT

That's the one. You're right, Kingston, NV.

FW