hihosland

true but theire is a relative change of wind direction to the aircraft

If the aircraft stays in balance the air flow relative to the aircraft is consistently on the nose of the aircraft.

Davidh

Guru Swami did ponder this request

and in the true spirit of Gurudom requested further information.

Was the request for paper napkins soaked with a lemon flavoured or a lemon coloured solution?

The latter he opined he could supply given sufficient notice and a priming XXXX or two

Tony did say

""Chris Kiehn has been back to me. The apparent silence from RAAus is due to them not having received Robin’s incident report that he sent in. I have asked Robin to send another one.""

It seems my e-mail to a board member suffered the same 'gobbled by the gremilins' fate as Robin's notification.

Truly unfortunate.

Davidh.

Surely diligent maintenance practices should have uncovered such a fatigue crack? If this kind of thing is going to happen and keep happening, we'll be heading down the LAME path in no time and push costs out of everyone's reach!

Davidh

It is now weeks since this event and, if my information is correct, since notification was made to RAAus.

I have been seriously concerned that there has been no evidence of comment nor action from RAaus concerning this event.

One can only compliment Robin, the pilot/instructor, in managing to get his aircraft safely to the ground with nil injury to himself or his student. As a direct result of his efforts a wife has a husband and children still have a father. Had he mishandled that event there could well have been two more fatalities to add to our unfortunately long list of deceased pilots.

How many of us have actually sat down and thought through the consequences of a tail plane failure and what we are going to do about it.

Robin did.

Robin's degree of professional airmanship needs to be acknowledged.

Davidh

"it were never an airstrip

it was always just a conveyor belt

and the mythbusters team have re possesed it

Forget about the aircraft,

first build up a relationship with an instructor with whom you feel comfortable and you trust. The right instructor for me is not necessarily the right instructor for you. Then just go flying in whatever aircraft that instructor has available and recommends for you.

Plenty of time to change aircraft once you have that certificate and confidence in your own flying abilities.

'dems my thoughts

Davidh

Good idea!!

Does not have to be on reciprical headings.

Imagine two aircraft one at 60 kts and the other at 110kts flying the same GPS track and the same quadrantal level there is a real risk of the faster aircraft overhauling the slower one. At least with the head on scenario you have two pilots keeping a look and you only need 50% of them to recognise the conflict.

With one behind the other only one pilot is in a position to see and avoid and the slow guy is reliant 100% reliant on the faster one's lookout.

Davidh

for me its 10 mile intervals because the GPS will count off the miles for you,

even easier if you fly at 60kts

Davidh

fearing that it might be his not existent ASIC card

wikipaedia it !!

the son to rise

dash

moving? ? ? ?

'allo

Sorry can't help;-

Biggles has borrowed the conveyorbelt operations manual

Bigglewsworth did say

"""The velocity of the plane could be measured against the scenery/still air, BUT if that is the case, the conveyor belt is as useless as tits on a bull. It won't stop anything, whether it is wheel driven, or propellor driven or magnetic attraction or whatever."""

exactement !!!!

Don't know about the worst mistake when there are so many from which to choose.

However planning a descent to an ERSA page number + 1000ft instead of field elevation +1000 features amongst my best/worst.

Davidh

Could not GA pilots always do their own maintenance if they were the builder?

Davidh

While not directly addressing George's question,

I'd be interested to hear ANY comments/advice/criticisms concerning travel insurance.

best of wishes

Davidh

MM Did say

"" foward velocity =10 kts

opposite velocity =10kts

overall velocity (in relation the still air) =0

""

Which would be true if the opposite velocity was being supplied by a propeller on the tail pushing in a rearwards direction, but it is not. It is merely spinning the wheels.

HOWEVER put a ski plane on the moving runway and have the runway apply a rearward force equal to the forward thrust then the aircraft will not fly.

and

""When i run on a treadmill i may be running at 20 km/h, but the treadmill is cancellin my forward speed exactly so i go nowhere...

The original question said that the treadmill is tuned to match the speed....THE SPEED..i'll say it again...THE SPEEEEEED;) Thats the key word, or the significant factor...""

True and a car on a dnyometer also goes nowhere because both the runner and the car rely on reaction against the road for their forward motion. But not the aircraft.

The moving runway could go at the exact speed, twice the speed or half the speed of the aircraft and the plane on wheels would still fly.

cheers...

Ian did say

"""I'm concerned that people think that because thrust is provided by a propellor, it somehow makes a difference. IT DOESN'T MATTER if thrust is applied by a prop, a jet, driven wheels or a winch down the end of the runway the thrust (motive force) in each case is transferred to the runway surface via tyre rubber, and the force resisting movement in each case is friction, the amount of which is detirmined by the coefficient of friction which is dependent upon the type of surface, and the mass of the aircfaft. """"

Surely thrust is is applied to the airframe and reacts against the air. I cannot see that any force is applied to the runway surface, in the hypothetical example or in any other situation. Other than the downward force supplied by gravity that is.

When a flying aircraft accelerates from x knots to x+y knots where is the reaction on or from the runway?.

Aircraft fly in air, air that is moving over the wings. Air moves over the wings by propwash which will accelerate the aircraft regardless of the speed or otherwise of the runway. Eventually that acceleration results in sufficient air flow over the lifting surfaces for the plane to lift off.

davidh

The only question really is will the aircraft move?? .....The propwash is no where near enough to produce enough lift to overcome the weight of the aircraft, and anyone that thinks it is needs a lesson in basic physics, if it was then why would aircraft need runways at all, just add full power and lift of the ground???

Its not even a brainteaser, its a no brainer..

If the aircraft was on on ice skates on wet ice it would take off just as it would on the moving runway.

Dat's my view

Davidh

Reading some of the explainations one could conclude that if the aircraft did land on aforesaid traveling runway it would have a roll out of zero. !!!

Envisage doing a touch and go on this runway,. If a touch and go is possible then the original aircraft would take off.

dem's my thoughts

Davidh

Mmmmmm.... stereo is fine, but what about Dolby 5.1 surround sound? :;)3:

Ben