ASP - Constant Speed Props and Governors

[@memoria964]

A&P student about to take my oral and practical exam in a few days. This was perfect review to help me understand and remember how this functions

[@pccaviationscience6769]

I hope your O&P went well! Those are challenging tests.

[@memoria964]

@@pccaviationscience6769 It did, thanks! Awkward as it is to say, it took me a good sixteen hours over two days (so glad I had a patient examiner), though I got it done in the end. I actually got a job offer just the other day and have already accepted it, so things are moving pretty quick.

[@KumsakumelaDinka]

Perfect practices to take ApG students exam and you continuing about this conditions ❤❤❤❤🎉🎉❤❤

[@taproom113]

Ummm ...Might wanna explain how the actuating oil gets from the engine (fixed), to the hub (spinning)? Thanx & keep up the good work ... ! ^v^

[@johnopalko5223]

Engines with constant speed props have hollow crankshafts. The oil flows through the crankshaft to and from the propeller hub.

[@taproom113]

@@johnopalko5223 Hi John, Thanx for the info. Curious how and where the oil gets into the crank. Is the entire crank hollow and it enters through a seal at the rear? Or is it plumbed through holes in the crank just up where the governor is? Thanx, ^v^

[@johnopalko5223]

@@taproom113 I'm a pilot, not an A&P, so I don't know the details. The hollow crankshaft was just a bit of knowledge I picked up along the way. A quick Google search reveals loads of theory on how constant speed props work and how to use them but no technical details on the actual plumbing. I'll have to ask one of the mechanics the next time I'm at the airport.

[@taproom113]

@@johnopalko5223 Copy, and thanx again for indulging me, John. I think I knew this back in the 70's when I was just getting started flying complex aircraft ... but can't remember now for the life of me. I searched all the YT videos I could ... but none went into any finite detail. (I'm aging but my OCD is still Max-Q!) 😵‍💫 ^v^

[@johnopalko5223]

@@taproom113 I believe it was Seth Lake who made a video in the past year or two where he talked about the hollow crankshaft. I don't recall if he mentioned how the governor connects to the crank. I hear you. My OCD hasn't abated with age, either. (I don't know if it's OCD as much as it is just unquenchable curiosity.) I'm guessing we're roughly the same age (I'm 69 today!) or you may be a bit older. I got my Private in the late 70's, in gliders, and I added an airplane rating a few years later. I don't fly anymore because of medical reasons but I just got my AGI/IGI certificate. I've been toying with the idea of getting on the faculty of PCC as a part-time instructor but I haven't really done anything about that yet.

[@rajsingh0621]

So much information in this video. Thank you so much posting.

[@pccaviationscience6769]

Glad it was helpful!

[@bionicwomen4009]

Great video - give me a better understanding of the differences of the props and performance

[@pccaviationscience6769]

Thanks! Glad it helped.

[@yonatanh2044]

Once again exceptionally good video.

[@davidwallace5738]

Great lesson sir. Thank you!

[@pccaviationscience6769]

Glad you liked it!

[@GM-he3um]

Very good 👍🏼

[@pccaviationscience6769]

Thank you! Cheers!