Spinners
Spinners
(OP)
Folks
Can anybody provide any suggestions for substantiation of repairs to aluminium propeller spinners. I amagine the main issue are centrifugal out of balance forces.
Thanks
Can anybody provide any suggestions for substantiation of repairs to aluminium propeller spinners. I amagine the main issue are centrifugal out of balance forces.
Thanks
Graham Murphy





RE: Spinners
Steven Fahey, CET
"Simplicate, and add more lightness" - Bill Stout
RE: Spinners
We have been asked re the feasibility of repairing a spinner. So far I havent seen the damage (have asked for it). My question is more of a general inquiry as to what matters Engineering wise.
Wairau
Graham Murphy
RE: Spinners
1. Angular momentum
2. Balancing
3. Vibration
4. Aerodynamic loads (probably extremely small when compared with others)
1, 2 & 3 are interrelated, so watch out.
Steven Fahey, CET
"Simplicate, and add more lightness" - Bill Stout
RE: Spinners
Just a note on spinners. While it may not seem to be structural, some prop a/c have the spinner listed in the POH as "Required Equipment". Usually to allow for proper cooling of the engine.
What I am getting at is that while a spinner may not seem to be significant structure, you do not want to loose it during flight.
Therefore, do not take your substantiation lightly.
RE: Spinners
RE: Spinners
Nigel Waterhouse
www.canamaero.com
RE: Spinners
Take a look at AC20-37D "Metal Propeller Maintenance" on the FAA AC website: htt
There are specific warnings regarding spinner affects on props. In general, it states that the prop or airframe manufacturers' guidance on spinner repairs is critical, to insure satisfactory prop operations, such as spinner tracking & dynamic balance. Discusses most elements of spinner structure. Does NOT provide specific repair guidance but does give insight to interaction with prop.
Regards, Wil Taylor