Fire Fire Fire

[asra]

hey brian (or anybody else) over the years has any research of any kind gone into hub bars cracking. "eg is it design, material etc" sorry for changing the topic off clt.

[aussie_paul]

hey brian (or anybody else) over the years has any research of any kind gone into hub bars cracking. "eg is it design, material etc" sorry for changing the topic off clt. Best to start a new thread "Hub bar cracking" Menz.Aussie Paul.

[Brian]

hey brian (or anybody else) over the years has any research of any kind gone into hub bars cracking. "eg is it design, material etc" sorry for changing the topic off clt. It would be a good idea to start a new thread .Yes, a nephew of Allan Wardill"s did a university study on this very topic and I think ?? it was posted here on the forum somewhere ??

[asra]

"Thats the spot where you guys used to be isn"t it"You are only half right Paul.My first CLT gyro was one I built in 1994,but we wrongly believed it was "thrust line in line with center of fuselage drag" (or center of pressure),not "center of mass".Of course the result was the same though,safe stable gyro"s.

[birdy]

"Thats the spot where you guys used to be isn"t it"We are all ignorant till we know better.

[aussie_paul]

"Thats the spot where you guys used to be isn"t it"You are only half right Paul.My first CLT gyro was one I built in 1994,but we wrongly believed it was "thrust line in line with center of fuselage drag" (or center of pressure),not "center of mass".Of course the result was the same though,safe stable gyro"s.Ha ha Murray. Good on ya.Yes I realise that. I remember we had quite a discussion whether CoM or CoD was the more important. Great that the internet has shrunk the world and made information readily available to even simple souls like my self!!!!!Aussie Paul.

[aussie_paul]

"Thats the spot where you guys used to be isn"t it"We are all ignorant till we know better.Absolutely Birdy. It just took me longer to become less ignorant!!!!!Aussie Paul. P.s. What are the co-ordinates of your homestead?

[Brian]

One thing that interests me is that the ELA for example was designed from a fresh sheet of paper by I have been told, the

[aussie_paul]

One thing that interests me is that the ELA for example was designed from a fresh sheet of paper by I have been told, the

[Brian]

I realize that PB but even for a visual, it made interesting thinkingThe more I read, the more factors I see as influencing gyro stability.

[Tsemler]

The more I read, the more factors I see as influencing gyro stability.

[asra]

Brian, bragging that you are a designer for Airbus wouldn"t impress too many people at the moment.No doubt he was thinking of perceived good looks when he "designed" it and didn"t think all the old geriatrics would be able to get in if he made the pod a foot higher and possibly CLT..People tend to go for the sparkly car with all the bells and whistles and not think of safety.Your friend would have either subconsciously slowly eased the stick forward or somehow de-pitching the rotor to increase airspeed..The ELA would have a better TL/COG offset than a Magni and also a large HS half immersed into the prop airflow. No magic there.Trent,earlier this year I flew a modified (HS & stabulator) RAF with Paul Campbell 30 miles without touching the stick.The only time cyclic was used was takeoff and landing.Even one of the biggest deathtraps ever built can be flown hands off.

[birdy]

Seems we have forgottn bout the frunt of the machine agin.Them bathtube machines are all basicaly the same.Long way from nose to tail p[ big leaverage at both ends], back slopen windscreen [ pushn the nose down] big HS out the back to balance all the inefficiancies [ pushn the ass down].The faster these machine go, the greater the down force exerted on the nose, which tyres to leaver the tail up, putn a greater neg incidence on the HS.IOW, more AS = more deflected air at both ends.So its little wunder the machine stays level, and the disc stays back. It has to, to take the increaseing weight of the deflected air as AS increases.

[Brian]

The Airbus problems are the engines which so far have all Rolls Royce Trent which have a extremely good safety record. As far as the airframe goes, not much wrong there, specially the A380 although I havent had the oppertunity to get a go at flying it

[Tsemler]

Trent,earlier this year I flew a modified (HS & stabulator) RAF with Paul Campbell 30 miles without touching the stick.The only time cyclic was used was takeoff and landing.Even one of the biggest deathtraps ever built can be flown hands off.Hello Murray,Im sure people that have flown a stock Raf will agree that its very pitch sensitive with power adjustments, but a modified Raf (H/stab and stabulator) as you described above to me would say its quite a stable machine, i personally will know for sure in a couple of weeks hopefully if it is So i would hardly call a modified High thrustline Raf a deathtrap.I would hardly say the machine i flew in had a big stab just guess"n... .5sq metreIf ya really wanna know if a machine is truely stable, forget CLT HTL LTL stuff and do a inflight stick fixed test. I reckon PB did a bit of this stuff in the RAF"s