documentation

[bones]

I have looked but i cant find, the latest documentation on the clearance for rotor to prop, tail,HS ect.I

[Tsemler]

Hey Mark,Here (http://www.asra.org.au/documents/Con...Gyroplanes.pdf) is where you"ll find the distances (for compliant gyroplanes), I had a quick look and it says100 Rotor Blade Clearance There must be enough clearance between the rotor blades and other parts of the structure to prevent the blades from striking the propeller or any part of the structure or passing through any area likely to cause injury to occupants during any operating condition (including blade flap). E25 Propeller Clearance If an unshrouded propeller is installed, propeller clearances, at maximum weight, with the most adverse balance, with the propeller in the most adverse pitch position and taking account of likely airframe flexibility, must not be less than the following: (a) Ground clearance. There must be a clearance of at least 180 mm between the propeller and the ground, with the landing gear statically deflected and in the level normal take-off or taxiing attitude, whichever is most critical. In addition, there must be positive clearance between the propeller and the ground in the level take-off attitude, with the most adverse combination of: (i) Undercarriage deflection; and (ii) The corresponding tyre fully deflated.

[Tsemler]

While this is up, i just see that there is now a F024 - Registration protocols - Basic GyroplanesRecord of Testing and Inspection and Statutory Declaration of Compliance Form that needs to be completed even for basic gyroplanes, does this mean you have to do up a flight/maintenance manual even for basic now? or just complete the F024 and the F006???? Why did this come about and what was wrong with the old way?

[bones]

D100 Rotor Blade Clearance There must be enough clearance between the rotor blades and other parts of the structure to prevent the blades from striking the propeller or any part of the structure or passing through any area likely to cause injury to occupants during any operating condition (including blade flap). Well that will ground every type of gyro ever built, because a bad rotor flap will cause the rotors to cut sh*t every where ?????? maybe you missed the main word...

[asra]

D100 does include blade flap. Most (if not all) machines here in Vic are capable of blade flap without ever striking any part of the machine. I regularly allow my students to flap the blades, so they know what it is, how it feels and what to do. All Aust registerd / flying machines should comply, if not then shouldn"t be signed off and allowed to fly >This is all about safety and should never be down played regardless of who built the machine, or were it came from. Cheers SamL...............

[bones]

Sam, have a look at the photo below, enough clearance you think??? just so there is no guessing, it is 600mm from the rotor to the tail.Well i bet i could go close to putting the rotors through the tail, so my original piont still remains:how do you class a "blade flap"that is the part i find hard to understand, the way it is written above there is no clear definition, so it either needs to be removed, or somehow defined.I think it is impossible to define it, abit like only a little bit pregnant.R22 helos arent spossed to cut their tail booms off either, yet i have seen plenty of photos of this happening so, what we ground all these too because it can happen??? I personally seen 1 that cut the tail boom into 3 pieces.

[Tsemler]

I regularly allow my students to flap the blades, so they know what it is, how it feels and what to do. Cheers SamL...............I think that your playing with fire with that one, all that jarring thru the control system, your rotors going a hundred odd rpm and violently flexing... away they aren"t designed and repeatedly to do it with the same machine.....Sure it happens in real life.. I did it once after I learnt to fly my boonger, no prerotator, no wind, stinking hot day and I got careless and high speed flapped them into the ground, grazed the blades on the ground and poo"d me pants... best way to learn to never be careless again.(which since then i found out didn"t work :-[ )Why risk a machine and perhaps your own life down the track thru perhaps fatigue... for something that with the right training and the right pilot attitude they should never do in the first place. They don"t show you flutter in an aeroplane so why show blade flap in a gyro? That"s my opinion anyways and im not trying to have a go at ya, just trying to look out for ya dude.

[asra]

1) My guess as to why ASRA has taken away a specific clearance measure is to to protect them selves from possible persecution should an accident/ incident occur. I believe its very difficult to be specific, as the amount of blade flex/bending will differ dependant on blade material (alloy or glass) blade length, blade weights, if tip weighted, and rotational speed. 2) My personnel preference re blade clearance is to push the blade down by hand until it feels like you may cause damage. At this point if I still have a min of 10 inches clearance from all parts of the gyro, including the ground, then I"m happy.

[tonydenton]

there was a set of messurments that i think bones is talking about, approx 12 mm above the pre rotator missing the hub bar, another measurement above the tail[ on a conventional tail] and another when the rotor head is on it"s back stop and the rotor hanging down clears the ground by " x " amount. so instead of me looking just yet is that style of clearances now not revelant?

[tonydenton]

sam, have you got a photo of one of your heads with the little side trim spring on the side again please,i would like to have a go at fitting one to mine one day. thanks. back to you bones.

[aussie_paul]

FWIW I found the best way to teach rotor management was to tie the students/instructors gyro to a tie down without the engine running and pointing into a stiff breeze. Then to see how slow the student could allow the rrpm to decay and bring them back up again. All students seemed to be pleased with how easily they learnt rotor management without roaring engines and bumps on the runway!!!Aussie Paul.

[Tsemler]

4) A final comment TSemler, "Should we stop teaching and showing FW pilots stalls. Its dangerous, so why risk the machine, and your life for something that with the right pilot training they should never do in the first place"Regards SamL.............. In my flying of fixed wings stalls aren"t dangerous! that"s the biggest mental build up of bullsh1t that surrounds FW"s.... Spinning in non cert aircraft is another story tho....Hey Mark while looking in the basic standards for a mate i found this.... which im guessing is what your after....D45 Rotor Blade ClearanceThere must be enough clearance between the rotor blades and other parts of the structure to prevent the blades from striking the propeller or any part of the structure or passing through any area likely to cause injury to occupants during any operating condition (including severe blade flap).Required clearance with the blade against the teeter stop is:-1. From top of pre rotator - 12mm2. From propeller - 75mm3. From rudder - 250mm.

[asra]

sam, have you got a photo of one of your heads with the little side trim spring on the side again please,i would like to have a go at fitting one to mine one day. thanks. back to you bones.

[tonydenton]

sam , thanks for that i"m going to have a go at fitting one to mine .

[chook]

Sam we usually run a piece of cord (loosely) through the middle of springs to capture them in the event of failure. Its the last thing you need flapping around in front of the prop if they let go.