Geoff_H

2021 F1 Cars Will Rev Higher and Abandon Electric Turbochargers

Multifocal implant lens have the eye lens split into a grid that has a different focus in each. It reduces definition. My sister has it and says it's good. I prefer my solution. CASA can't handle anything different.

What I have is called monocular vision meaning one eye only. And only one eye is in focus at any point that you are looking, however while out of sharp focus the other eye is still collecting data and images for the brain. I see things exactly as I did when I had good vision as a youngster. People will say that as you only have one eye sharp then you don't have depth vision. Well you do, maybe not as good as when you have two good young eyes but I can still catch a ball, easily, maybe my depth vision is only 90% of what it was when I had two very good eyes but it is there. The brain uses slightly out of focus information from the second eye and gets it to nearly 100%, it sees the centre of the slightly blurry objects and uses this information. The first 3D movie I saw was a problem for the first 30 minutes, it was 2D, but all of a sudden I realised that I was seeing 3D. Now every 3D movie I see is seen in 3D, the brain remembers what to do, a truly fascinating organ . For flying I have bifocal glasses that correct both eyes so that you see the world as a non monocular person does. CASA demands that I wear glasses when flying. I have one for wearing and one for spare. Never quite understand what their problem is with "monocular vision", maybe they just don't understand. I love my "monocular vision" not as good as young vision, but far far better than glasses. I am so glad that I demanded a diopter 2 in my left eye, it can see really fine detail. I just wish that I had demanded astigma correction in my right eye. I have thought of having the lens replaced. If you are thinking of eye surgery for cataracts or similar I would be pleased to chat over the phone if anyone wishes. Geoff

Sorry I misunderstood. I have long vision in right. Short in left and have a casa medical. I would rather talk on phone for more info. Let me know and I will email phone number

Should be Halo effect, not hall effect

I have a very good number 5. Left eye has very close focus. Diopter 2. Had to argue with opthalmic surgeon before he would give it. Don't bother with 4, get the second eye done asap after first. I wish I didn't wait the 18 months. But I had monocular vision with contacts for 10 years so my eyes went straight to fantastic vision. It may take 6 weeks to get used to monocular vision. About 1 year for hall effect to go. Eye surgery the least painful surgy I have ever had. Geoff

Without a pitch change my thoughts are on something else in the engine or airframe that is vibrating at it's natural frequency when an engine frequency is near that frequency. When they dug a tunnel under my house I mapped the vibration and amplitude when the machine approached 50 metres down in sandstone. I found that the house had a natural frequency of approximately 50 hz, the tunnel boring machine actually only had very small amplitudes at this frequency. You may have something similar, maybe air ductwork or a panel. To find this you would have to put your hand on various parts and see what moves. Difficult around the Engine I admit. By the way this is only a wild guess, don't spend too much time or money on it. Geoff

Does the pitch of the vibration change with Engine speed?

The cause could be plaque. Only shows up on calcium score. All other tests do not show it. What causes it in low risk people I don't know but a bit breaks off, into your heart and stops the valves from working. Not so nice.

If you are fit and healthy and want to know your risk of dropping dead get a calcium score. I am no cardiologist but mine tells me it is an indication of how much plaque that you have in your arteries that may break off and go into your heart and block it. Stress tests will also help to a lesser extent if they ultrasound your heart under stress. But don't rely on me, I am an amateur.

Maybe you should see a certified, the one that you would use maybe. Ask him/her then make your decision. I just think that if the experience for you is not the building, then don't.

I must admit my clash with CASA was around 2000, many things may have changed since then.

As an aside the advertisement that I placed for making moulds should have read "person needed to make aircraft moulds. At your place" and so on. Advertiser printed "person needed to make aircraft. Moulds at your place" and so on. What a difference a full stop placement meant. No wonder CASA called and threatened.

Yes KRviator it is 51%. I had better pay attention to the details. Some one may have built only 50% and had their aircraft rejected. Personally if one doesn't do as much as possible they would probably be better buying a built aircraft.

When you build an aircraft, even fast build kits, you will put at least 500+ hours into it. At $30/hr that would add $15k, and make something like a onex cost $90k. Might as well buy a factory made craft

I have no idea how CASA handle the sale of a partially built aircraft, the did have a group monitoring the amateur building, maybe not any more. In the 70's there were a lot a accidents, world wide, from home built that were not registered, that's when they introduced experimental class. Our was a carbon copy of theirs some 20 years later

CASA told me it had to be me. They were quite annoyed that I was advertising for someone to do some work.

You should keep a log of your building. You could invent entries, but also expect inspections along the way. Answering intelligent questions to the inspector could be difficult and give you away

It has to be you. The specifications for experimental are for aircraft development or the learning of the builder. In the 70's it was stated that with the rules of the day the Wright brothers would never have been allowed to fly their aircraft. I was building a moulded aircraft some years ago. I advertised for someone to build the moulds. The publisher of the advertisement left a full stop out of the advertisement and it read like I wanted to get someone to build the aircraft for me. CASA called to tell me that it had to be 50% by me. As an aside no one answered the advertisement and I gave up. Maybe you could make a group of people, make the aircraft and do little, but make the paperwork look like you contributed an equal share, might work. But look at the fun that you would be missing out on.

To be in the vh experimental class you must build 50% yourself

Yes.i did it on a vh licence. Unsure what other restrictions are.

The RAAF give you an authorization number. When requesting clearance to enter military CTA you will have to quote this clearance if your aircraft is not based at the aerodrome. If just passing through restricted zone civilian traffic controller will organise it

Hi Callahan, I am 69, about to be 70. Have you checked the vibration damper in the gearbox input? Geoff

Hi Nev, The aircraft is single seat. 12 ft long, 16ft wingspan. Cramped as can be, looks a little like a coffin at present (LOL)

Thanks. I didn't realize that gliders use sidesticks as the pilot is recumbent. I can calculate all the forces and moments etc, I can't open any of the NASA cr1975 documents, do they contain any ergonomic data? Any glider pilots that can tell me what makes a good system and bad system, do any of them wish that they had a joystick?