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facthunter

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Everything posted by facthunter

  1. Weather in that area noted for rapid changes and spectacular rugged topography. It used to record annual rainfall in the region of 190 inches in the old measurement. Multiply by 25 to get MM's . Sad outcome . It's not your normal bit of countryside by any means, and an air service is the only way to get some places. Nev
  2. facthunter

    RAAus rego Vs Casa cost

    You won't know till you try. I think most warbirds are on exp. To modify "anything" on a certified VH is close to impossible in a practical sense. The exception is complying with AD's where the action is mandatory but the manufacturer has done the" revising" usually as a result of some fault becoming evident. Nev
  3. facthunter

    Beauty in the Eye of the Beholder?

    Maybe the cars , but not aircraft. I also don't regard Bugatti styling to be anything but gangster big car "elegance" . Nev
  4. facthunter

    RAAus rego Vs Casa cost

    There's considerable costs in certification and the price must contain something to cover it. It also restricts modifications like ALL VH except experimental. some people who would know more than I do suggest VH exp is the way to go. Use a PPL or above to drive them. Nev
  5. Statistics are only valid if the numerical size of the considered units is so large that the figures are not distorted by a small cluster of a certain type of event.. You are not immune from danger if there's been a spate of deaths even if that's above those for a normal year. You can't say we've had our quota for the year, already. Some still believe everything happens in groups of THREE. Believe that to a great extent in aviation, YOU make your own luck and you will be better off by planning and being skilled and careful. Nev
  6. It was BY a diversion that would have helped keep away from High terrain. A clearance into controlled higher levels would have been given if requested and would have saved the day. Fit people can keep oxygenated for short times at those levels by using the mask intermittently and some may even be able to go without it for a while and permitting staying clear of icing conditions (which may have contributed to it) But loss of control and airframe break up resulting was probably the cause. Once you have a bit of Rime icing the stall speed goes right up and performance deteriorates and the ice flying off the prop blades is distracting in the extreme, often with vibration that blurrs the instruments even IF you do know how to fly in IFR. Even using the autopilot won't guarantee good results once the plane is iced up..Nev
  7. facthunter

    Alternate organisation...deafening silence

    CASA is probably the only body in the game who /which has the resources to carry the liability at the level it could reach. It also has the deep pockets to make them immune from the ordinary individual fighting them in court, and having a chance of winning.. The Absolute/ strict Liability that is imposed on the activity. is onerous and scary. (Look it up it doesn't take long). Spend a few minutes at looking at what it is. Nev
  8. facthunter

    Accident and defect

    What ATSB investigate and why might be questioned but the quality of their investigative process is generally accepted as fair and impartial. They are open to the public supplying information and opinion. Things were better when it was an Aviation only organization though some commercial pressures may have been exerted on occasions...Coronial investigations bring up some very "not aviation savvy" statements at times, which may be totally irrelevant unintentionally just by lacking aviation "Knowledge" which is quite specialized since only a small % of the population get involved in it other than as a passenger, generally on RPT. Nev .
  9. Covered well. IF you MUST go. Book a seat on RPT. If you are flying VFR you may ARRIVE days later safely when the weather is OK, or not at all.. Nev
  10. facthunter

    Were the Wright Brothers in Newton's camp?

    Most wings we deal with are designed to control twist to a minimum. Aileron reversal effect is not unknown however where this is inadequate. The same could happen with the elevator or rudder. The horizontal stabilizer of the Boeing B 727 is designed to twist if the MMo is exceeded under the action of a supersonic (local) shock wave which forms at excess speed and that tends to cause it to raise the nose and correct the situation. Nev
  11. Where do you rate the Brit Government at the moment Phil???? As far as lower end of aviation here is concerned the gov't wouldn't even know it existed. It's buried in a folio of Transport and Infrastructure. We don't really use our planes for transport. We re-create ourselves with them. Not exterminate ourselves or perpetuate crimes by flying them.. The "department/ authority" want to ground us and prevent us from getting off the ground so we don't get hurt, working on the principle that a static exhibit won't kill you if there's a rope 20 feet away from it, all around it and you are behind it, it can't hit you.... Nev
  12. facthunter

    Were the Wright Brothers in Newton's camp?

    Wing warping is quite logical , effective and was patented ( requiring others like Curtis to develop the aileron.) Wing warping has much less drag in small amounts and the twist of the wing along it's length is more able to conform to the idea of a helix (ie more angle further out). The world had become skeptical about the reality of the Wright's achievements but when they turned up (eventually) at the world air show at Paris all doubt was removed. Unlike other aircraft it was controlled in roll positively and the French subsequently built them under licence. Other aircraft needed natural stability to turn Nev
  13. facthunter

    Small turbines 100hp 130hp

    They have a compromised combustion chamber shape with too much surface area to volume ratio so will never be efficient. They don't fly to pieces though. Like two strokes , they are unlikely to get past emmissions rules, long term.. Very few have mastered the seal problem with the Wankel. Norton made an aircooled version derived from a motorcycle engine that is used in light aircraft. Nev
  14. facthunter

    Beauty in the Eye of the Beholder?

    I have great difficulty" admiring" anything that is stupidly unsafe just to make a style statement as happens a lot in Europe with some U/L planes design.. Might be a selling point with some, but not for me.. As for generql good style The ME 262 ,Mitsubishi zero, FM 190 and a Lockheed 1049 C Constellation and quite a few flying boats look OK to me Catalina and Short Sunderland for example. If been up close and personal with Concords but they look better from a distance and without the cockpit drooped. Close up they are all ripples and dents but it's a n iconic shape. The Ryan STM looks cute. and some of Howard Hughes racers too. Some aero engines look good and some look fugly .Radials where you can see the cylinders etc the fins on some of the heads are a work of art.. But I can't separate what engineering goes into them from the shape. If the fins are in a useless place, it looks crook.. A plane has to fly as well as it can be made to. that's it's prime aim .The way it flys is what makes it beautiful.. They belong to the air Not the ground.. Nev
  15. facthunter

    Small turbines 100hp 130hp

    The wankel would be a good sports engine but is close to a 2 stroke for fuel efficiency. It has been used for outboard racing and if you want more power just supercharge if. Seals wear and cases distort but if it starts it will get you home. Very noisy and hard to muffle. Nev
  16. facthunter

    Small turbines 100hp 130hp

    It wouldn't be an unusual occurrence for a small turbine type engine. Due to the high temps internally most seals are labyrinth type and the bearings are sprayed with an oil jet some oil loss would be considered normal.. Nev
  17. Quite a few crashes with serious back injuries after engine failures. That's why the great emphasis on nosing forward when the engine goes quiet. Lotsa drag, cruises and climbs/glides at the same speed (almost). Nev
  18. facthunter

    Beauty in the Eye of the Beholder?

    I don't see the B 707 as ugly. On pods under the wing and forward is the best place for a jet engine. They are even designed to separate if the engine gets well out of balance. Having them in the wing is costly heavy and dangerous (Compromises the spar). One failing bigtime would take out the other and the wing as well The B 707 was the first really safe and reliable international jet liner based on a standard single aisle fuselage cross section that went on many models. Form has to follow function with an aircraft.. it's a compromise in many ways without making it look good for a desk model The wingtips could flex 27 feet without structural damage and that's well before Carbon fibre. Their cruising Mach Number is up with the latest. Lots of flap and spoiler action.. High airframe times are common. wthout angst. Nev
  19. facthunter

    Small turbines 100hp 130hp

    " modified steam engine" is a bit of a stretch of the imagination though. Hardly a fair description of an article where there's a $#1tload of specialized development that's gone into making a rotten principle work very well. in the Infernal combustion engine, over a long period of time, and it's become something most people can use and not think much about. IF you want range, In aircraft terms, the piston engine is way ahead on efficiency. especially at low level.. Rover built a turbine car in the 50's which was a test bed to subsequent aero application. You don't and won't see turbine powered cars, except in freakish events... Turbines don't have much character. They either start successfully or melt the turbine and the smell is bad and they have to be revving near full revs, or they hardly make any power at all . Some are flow critical and can stall if you don't dump mass air The centrifugal compressor is almost mandatory for smallish ones for flow stability.. Only precise design and metallurgy makes them any use or able to run at all reliably. The very high temps mean when things go wrong they fail. fairly dramatically. Nev
  20. facthunter

    Nice new planes for RFDS

    Not sure they are particularly useful on a dirt strip. Didn't exactly leap into the air in the vid and it had no load and the air would be cool. Not like Central Australia. they might use stretches of highway like on the Nullabour. Nev
  21. facthunter

    Small turbines 100hp 130hp

    I don't quite understand the essence of your description. The steam engine is an external combustion thing and can be reciprocating or turbine or a swashplate type motor. It has thermodynamic differences and is condemned (however much one may love them) to an inferior efficiency level for many basic reasons you can't eliminate however much you refine it. Not having reciprocating parts is the advantage of turbines. Load reversals promote fatigue and combined with large dynamic loads add to the life reducing factors of a lightweight Aero engine. Turbines where the fuel is burned internally have their efficiency limited by temperatures being restricted by metallurgy and design (coling) and pressures not being anywhere near what you can get in reciprocating engines.. Internal combustion engines operate on the Carnot cycle where high temps and pressures equal high efficiency. Fluid flow and pumping losses can be calculated also You don't have to build these things to evaluate their potential any more. Nev
  22. I don't really have a problem with the CASA anymore than others who are following "their" current way of doing things does. There's no certainty of purpose or sign of a coming improvement... Plenty of Impartial investigations confirm an unsatisfactory performance but nothing is changing. In fact there are signs it's getting worse from the user/ pilot 's point of view. Its change of tack cost me personally enough money to get me essentially financially compromised for any serious further involvement where I would commit effort and money to any degree. . Certainly it is once bitten twice shy for me. When they do it well I will be one of the first to approve the change. but I won't put money on it.. I also think I saw another side of the matter which you may not have had access to. I don't actually don't believe the RAAus got much help and guidance and there was no intentional criminality . Nor was the Jabiru "thing" done well either. Plenty of other examples if you care to look deeply and I go back a long way . .Nev
  23. facthunter

    Engaging Carby Heat

    Might be a good idea to see the engine of the plane you fly with the Cowling off and have someone show you the ducting etc. .Cessna's use both Lycoming and Continentals The Lycoming usually has the inlet passages passing through the sump where it's Quite hot. IF the air coming in is from a hot source you are getting less power than if it's cold air. Also it's correct that with most engines, carb heat on will reduce power available to the extent the go round will be compromised. Always do throttle FULL ..check Carb heat OFF AUTOMATICALLY as if it's one action.. Every time. Yes some engines will get dust from application of the hot air function but IF you need hot air use it. If you apply it after a long glide there won't be much effect as the hot bits you relied on have cooled off. It's also FULL ON, NOT partial,, preferably with power still at cruise for a minute or more, and IF you are in really bad conditions do the descent with some power, when you can and heat on.. IF you Have to go around it's covered by the full throttle, heat off action. All take offs and go rounds should include an engine power check as part of it .You may find the heat on or the throttle is not fully open but FLY the plane as well. You have control and flaps etc to worry about there. Nev
  24. Appearing to be doing something and getting the problem addressed and rectified are two different things. IF you care about an organisations future you don't pirate all their top brass at a critical time and do just do audit on Audit, without being more involved with a lot of matters that are CASA's delegated areas of responsibility. ( A contentious point at any time) A lot of the problem was that people who should know better (even GA licenced) LIED brazenly about certain facts to the RAAus.. CAA reneiged on agreed proposals for weight increase etc under it's new Management and took a very punitive approach to the organization. It's future welfare was well outside their considerations. The beat up over water from memory the individual and aircraft were not even registered with RAAus so it's a straight out police matter.Nev
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