Propeller Safety
Years ago while waiting in Phoenix for our plane's late arrival, I went over on the ramp to see a large orange safety cone which was stuck and wedged between the blades in the intake of a Delta B-767's left engine. Many very small orange pieces were behind the engine. An agent had left the cone in the wrong place. This was just a large turbofan.
Two female ground agents were killed as they walked into a Metro's left prop at Newark (EWR) and into a SF-340 propellor down south. These happened at night, but daytime is no protection.
Many regional airlines operate the right engine when boarding, in order to help cool the planes etc.
Two female ground agents were killed as they walked into a Metro's left prop at Newark (EWR) and into a SF-340 propellor down south. These happened at night, but daytime is no protection.
Many regional airlines operate the right engine when boarding, in order to help cool the planes etc.
Conan I think the accident you mentioned was at Glasgow with a Dan-Air charter to Shetland. It was during the construction of Sullom Voe Oil Terminal. Onre of the bears (construction worker) was put off the budgie cos he was smashed. He then nipped around under the wing to get his bag from the baggage door at the front and ran straight into the prop. Nothing left above the knees according to eye witnesses.
Avoid imitations
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Sad thing about these accidents is that HAD they been wearing hi-vis vests, they might have been completely unharmed 
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Prop safety
To carry out a compressor wash on an Allison 250 Powered Turbine Islander .... hold prop blade under arm pit and squirt compressor cleaner down engine air intake whilst using the starter motor ... no ignitors or fuel during this operation! .... I've done it!
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sled dog - the Proteus was also used on the RN's Fast Training Craft (70's boats used to simulate Russian vessels, HMS Sabre, Scimitar and Cutlass). 50 knots = 
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Hi-viz vests incorporate a thick layer of invisible body armour, and have been known to give the wearer an incredible sense of their own importance and intelligence 
I am scared of propellors. In my teens as a model aeroplane fanatic, I lost the top of my right index finger to a misfiring 3.5cc diesel engine. I keep well clear, whatever the situation.
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You are being serious aren't you? Bloody misfiring 3.5's. Not really on the scale of a real aeroplane now is it.....This is the Military forum you know not the boy scouts model aircraft club..............
I think the point made 901 very apposite! If a small 3.5 cc engine can take your finger off, just think what a prop powered by 2000cc, 4 or 6 cylinder engine can do to your arm, or head or torso. Always treat props with the greatest respect and as if they were live. I was taught it on the Chippie and I have taught it ever since - I still have a full complement of limbs (not sure about the liver though
).
I remember wondering why 3 bladed props were always left to rest in a "Y" state..
I found out one of the reasons after we moved a prop 60 deg (for a valid reason that has long slipped my mind). I also discovered that: a/ leading edges are sharpe, b/ you DO see stars after smacking your head hard, and c/ you don't do it twice...
The other illustration of the danger was doing compression tests and trying to find TDC with compressed air in the cylinder. If you got it right there was no problem, but get it wrong and you found yourself being dragged along by a rapidly accelerating prop.
I found out one of the reasons after we moved a prop 60 deg (for a valid reason that has long slipped my mind). I also discovered that: a/ leading edges are sharpe, b/ you DO see stars after smacking your head hard, and c/ you don't do it twice...
The other illustration of the danger was doing compression tests and trying to find TDC with compressed air in the cylinder. If you got it right there was no problem, but get it wrong and you found yourself being dragged along by a rapidly accelerating prop.
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More about propeller safety from Hartzell, and a few NTSB accident briefs at the very bottom of the page.
http://www.hartzellprop.com/flight_s..._prop_safe.htm
http://www.hartzellprop.com/flight_s..._prop_safe.htm
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One hopes that you are joking here 747!! I think the point made 901 very apposite! If a small 3.5 cc engine can take your finger off, just think what a prop powered by 2000cc, 4 or 6 cylinder engine can do to your arm, or head or torso. Always treat props with the greatest respect and as if they were live. I was taught it on the Chippie and I have taught it ever since - I still have a full complement of limbs (not sure about the liver though ).
I think the point made 901 very apposite! If a small 3.5 cc engine can take your finger off, just think what a prop powered by 2000cc, 4 or 6 cylinder engine can do to your arm, or head or torso. Always treat props with the greatest respect and as if they were live. I was taught it on the Chippie and I have taught it ever since - I still have a full complement of limbs (not sure about the liver though ). Blah blah blah propeller safety blah. The 3.5 didnt take his finger off, only a bit of it. Anyway what is he doing sticking his digit into a spinning propeller? Silly sod.
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One does does one? Oh for goodness sake!!!! How high is that horse you are sitting on? Blah blah blah propeller safety blah. The 3.5 didnt take his finger off, only a bit of it. Anyway what is he doing sticking his digit into a spinning propeller? Silly sod.
Blah blah blah propeller safety blah. The 3.5 didnt take his finger off, only a bit of it. Anyway what is he doing sticking his digit into a spinning propeller? Silly sod.
However, if one has never fired up a 3.5" prop engine one would probably not be familiar with the danger to one's finger .....
Last edited by hobie; 18th Oct 2006 at 20:38.
Thanks, Roland, that was the point. I am sorry that as a mere mortal I started at the bottom. And yes, we did start them with our fingers. A backfiring diesel moves faster than you can get out of the way.
And, to be fair, it did happen on an RAF airfield.
And, to be fair, it did happen on an RAF airfield.
3.5" prop? Probably only on a Cox Tee Dee .010. All of 0.16cc and revs to 32000 rpm. A 3.5cc diesel would be more likely to use something like an 8x6. And yes, it bloody hurts when one catches one digit starting one's diesel. Clouted a finger on my PAW 19 BR at school in 1966 and still have a small scar to prove it!
Aeromodelling teaches basic aerodynamics, basic engineering and a fair bit of handcraft skill. Not to mention patience...
Quite a few of us probably grew up amongst balsa, dope and diesel, I would imagine!
Aeromodelling teaches basic aerodynamics, basic engineering and a fair bit of handcraft skill. Not to mention patience...
Quite a few of us probably grew up amongst balsa, dope and diesel, I would imagine!
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Aeromodelling teaches basic aerodynamics, basic engineering and a fair bit of handcraft skill. Not to mention patience...
I do recall the team meeting up with the real thing (RAF Crew and of course a real C-17) and they were welcomed and treated graciously as "one" would expect .....
http://www.landings.com/_landings/pa...cale-c-17.html
