timz
Topic Author
Posts: 6163
Joined: Fri Sep 17, 1999 7:43 am

Hand-propping In Flight: How Easy?

Thu Feb 16, 2012 11:58 pm

Woulda thought it would be hard to succeed-- could it really work?

http://www.flickr.com/photos/34076827@N00/4587719364
 
Fly2HMO
Posts: 7207
Joined: Sat Jan 24, 2004 12:14 pm

RE: Hand-propping In Flight: How Easy?

Fri Feb 17, 2012 12:41 am

I bet it's much more easier than on the ground. You have air flowing through the propeller to help get it going.

Heck, I'm actually surprised the prop is fully stopped. Then again it is a light wooden prop, they have much less momentum than their metal counterparts. Either way I'm sure it fired up right away.

In very cold mornings I hand prop our planes before starting the engine to get some oil flowing (as minimal as it may be). I sometimes need to ask my students to help me do it. (then again the IO-360 is much larger than what a Cub has)

[Edited 2012-02-16 16:44:34]
 
Max Q
Posts: 5695
Joined: Wed May 09, 2001 12:40 pm

RE: Hand-propping In Flight: How Easy?

Fri Feb 17, 2012 12:51 am

Ok, that has my vote for the most stupid thing i've seen a Pilot do..
The best contribution to safety is a competent Pilot.
 
jetblueguy22
Posts: 2589
Joined: Thu Nov 29, 2007 12:26 am

RE: Hand-propping In Flight: How Easy?

Fri Feb 17, 2012 3:05 am

I look at that picture and just thought, oh hes going places. Unfortunately its the sea below him.
Not the smartest idea.
Blue
Look at sweatpants guy. This is a 90 million dollar aircraft, not a Tallahassee strip club
 
Fly2HMO
Posts: 7207
Joined: Sat Jan 24, 2004 12:14 pm

RE: Hand-propping In Flight: How Easy?

Fri Feb 17, 2012 4:13 am

Quoting jetblueguy22 (Reply 3):
Unfortunately its the sea below him.

Looks more like a dam to me.

Quoting Max Q (Reply 2):
Ok, that has my vote for the most stupid thing i've seen a Pilot do..

Oh trust me I've seen worse.
 
KELPkid
Posts: 5247
Joined: Wed Nov 02, 2005 5:33 am

RE: Hand-propping In Flight: How Easy?

Fri Feb 17, 2012 6:46 am

Quoting Fly2HMO (Reply 4):
Quoting Max Q (Reply 2):
Ok, that has my vote for the most stupid thing i've seen a Pilot do..

Oh trust me I've seen worse.

Just remembering the scene in "Never Cry Wolf" where the pilot steps out on the float in a DeHavilland Beaver and fixes the engine in flight after suffering an in-flight engine failure   And to top it off, he has a non-pilot passenger hold the controls while he did it  
Celebrating the birth of KELPkidJR on August 5, 2009 :-)
 
Fly2HMO
Posts: 7207
Joined: Sat Jan 24, 2004 12:14 pm

RE: Hand-propping In Flight: How Easy?

Fri Feb 17, 2012 4:08 pm

Quoting KELPkid (Reply 5):
And to top it off, he has a non-pilot passenger hold the controls while he did it

In real life I rather trust my trim alone than a passenger sitting inside shitting brix.
 
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glen
Posts: 273
Joined: Thu Jun 30, 2005 4:43 pm

RE: Hand-propping In Flight: How Easy?

Fri Feb 17, 2012 4:42 pm

Quoting Fly2HMO (Reply 1):
Heck, I'm actually surprised the prop is fully stopped.

It won't happen in a "normal" engine failure case. But here I'm sure they did it by intention to get this picture. Just slow down the plane close to stall speed (33 kts on the cub!) after closing the mixture and the prop will stop.

But once the prop is fully stopped, you need quite some speed (and therefore altitude) to bring it again into the windmilling state - or the helpful hand of your pax like in the picture  Smile

[Edited 2012-02-17 09:14:53]
"The horizon of many people is a circle with zero radius which they call their point of view." - Albert Einstein
 
Max Q
Posts: 5695
Joined: Wed May 09, 2001 12:40 pm

RE: Hand-propping In Flight: How Easy?

Sat Feb 18, 2012 9:24 am

Quoting Fly2HMO (Reply 4):

Oh trust me I've seen worse.

I am impressed..
The best contribution to safety is a competent Pilot.

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