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1st Feb 2013, 11:35
Replies: 3
Views: 2,266
Posted By Mark1234

You might find it's more trouble than it's worth...

You might find it's more trouble than it's worth to get up in the cirrus - they're pretty particular, however they have a lot of PA28's of various flavours and a couple of C172's.

Trips wise,...
10th Jan 2013, 11:57
Replies: 120
Views: 11,250
Posted By Mark1234

I am of the understanding that the hard/grass...

I am of the understanding that the hard/grass debate is pretty much a no-brainer: I.e. hard every time, largely because you can slide on it. I'd also throw in the consideration that every grass strip...
8th Jan 2013, 13:40
Replies: 120
Views: 11,250
Posted By Mark1234

I don't know, but I wonder what the cultural...

I don't know, but I wonder what the cultural considerations are here - the native Aussies and the euros are quite familiar with having command authority, but from the impression I'm getting of the...
2nd Jan 2013, 14:19
Replies: 27
Views: 3,049
Posted By Mark1234

LeadSled - I'm not sure about a 'rule', but the...

LeadSled - I'm not sure about a 'rule', but the principle is sane - according to Mr Newton, F=ma (and therefore a = F/m)

So as M gets bigger, the same force will produce a smaller A (or G loading)...
21st Dec 2012, 10:31
Replies: 142
Views: 18,780
Posted By Mark1234

Seems to me most of the argument (particularly...

Seems to me most of the argument (particularly from Dg800) hinges around the definition of pilot. You'd hope that would be clearly defined, but that seems too much to ask; I think most pilots would...
21st Dec 2012, 10:17
Replies: 21
Views: 4,569
Posted By Mark1234

In that case, the *average* Australian male needs...

In that case, the *average* Australian male needs to take some exercise. 5'10, Male, Caucasian (I presume that's what you're getting at with the 'minority' comment), average in pretty much all...
16th Oct 2012, 14:10
Replies: 29
Views: 3,771
Posted By Mark1234

Probably.. This was interesting wrt length...

Probably..

This was interesting wrt length of freefall: Red Bull Stratos: Why Didn't Felix Free Fall for 5 Minutes? | Wired Science | Wired.com...
25th Aug 2012, 21:52
Replies: 10
Views: 2,199
Posted By Mark1234

Just one thought for the OP - all other...

Just one thought for the OP - all other considerations aside, remember that Vx is best ANGLE of climb, whereas Vy is best RATE (by definition).

Therefore Vy will get you away from the ground...
12th Aug 2012, 22:37
Replies: 18
Views: 3,036
Posted By Mark1234

It's an interesting question about psychology I...

It's an interesting question about psychology I think - the safer we make life, the more esoteric ways man (I mean the animal, not the gender) comes up with to push the envelope. I don't believe it's...
10th Aug 2012, 12:11
Replies: 18
Views: 3,036
Posted By Mark1234

Also check out jokke sommer's 'dream lines' -...

Also check out jokke sommer's 'dream lines' - seriously impressive.

Then there's this: Jeb Corliss - Grounded - YouTube - jeb getting it seriously wrong and being lucky to escape with his life....
7th Aug 2012, 10:58
Replies: 15
Views: 4,410
Posted By Mark1234

Apologies - wasn't supposed to be confusing, or...

Apologies - wasn't supposed to be confusing, or to make me look clever :hmm: I felt that because the unit of acceleration is G (as in 1 gravity), and we were talking about orientation relative to...
6th Aug 2012, 15:24
Replies: 15
Views: 4,410
Posted By Mark1234

IMHO the important point to grasp is that...

IMHO the important point to grasp is that stalling (in either the positive or negative sense) has no relation to 'G' as in gravity. It is entirely related to the angle of attack of the wing, which is...
30th Jul 2012, 10:19
Replies: 18
Views: 3,485
Posted By Mark1234

Just for the sake of balance I think you're being...

Just for the sake of balance I think you're being somewhat unfair on the Robin. Yup, the rudder's a bit hefty, but otherwise there's not that much between them.

Flown quite a bit in an Alpha 160A...
23rd Jul 2012, 14:49
Replies: 18
Views: 3,485
Posted By Mark1234

Personally I don't feel the tandem/side by side...

Personally I don't feel the tandem/side by side thing is much of an issue - the main advantage I see with side by side is that a considerate/attentive instructor can see you turning green (I prefer...
23rd Jul 2012, 09:16
Replies: 18
Views: 3,485
Posted By Mark1234

What Backpacker said. Personally I'll confess a...

What Backpacker said. Personally I'll confess a slight preference for the decathlon. Both excellent for aeros training and beyond.

The biggest difference is you'll (presumably) need to learn...
10th Jul 2012, 12:26
Replies: 32
Views: 4,049
Posted By Mark1234

Again just a wild guess, but in the beginning it...

Again just a wild guess, but in the beginning it would probably have been rather difficult to manufacture a viable nosewheel. I assume most early aircraft were made from wood; the mainwheels would be...
25th Jun 2012, 12:31
Replies: 39
Views: 4,707
Posted By Mark1234

The twist in a prop blade is to keep the AOA of...

The twist in a prop blade is to keep the AOA of the blade something sensible along the length, rather than manage lift distribution per-se. The tips are travelling 'round' a *lot* faster than the...
31st May 2012, 10:30
Replies: 35
Views: 7,102
Posted By Mark1234

What bushfiva said, only the other way round! ...

What bushfiva said, only the other way round!

CMOS devices generally suffer the 'rolling shutter'. The image is scanned line at a time off the chip, so motion between line scans gives you the...
6th Apr 2012, 23:27
Replies: 35
Views: 3,464
Posted By Mark1234

The standard of most amateur aeros may be gash.....

The standard of most amateur aeros may be gash.. but I completely agree with foxmoth. Paxing 'competition' style aeros is uncomfortable even when you know what you're doing.

Simple answer is to...
23rd Mar 2012, 01:45
Replies: 11
Views: 1,820
Posted By Mark1234

Awesome. Good on you for getting where you wanted...

Awesome. Good on you for getting where you wanted to be :ok:

Also, thank you for the reminder of the thread. I'm suffering a life-induced slump in my flying and wondering whether to renew my...
2nd Mar 2012, 10:30
Replies: 38
Views: 3,674
Posted By Mark1234

Not really! The 'stopped' prop would 'creep' over...

Not really! The 'stopped' prop would 'creep' over the compression of the engine every few minutes, and complete a half revolution to stop precisely vertical again.. I'm thinking that with a 4 pot, 4...
1st Mar 2012, 16:08
Replies: 38
Views: 3,674
Posted By Mark1234

If the prop is windmilling in a steady state at...

If the prop is windmilling in a steady state at some RPM, it must be absorbing the right amount of energy from the airstream to balance what is needed to turn the engine over at that RPM against the...
27th Feb 2012, 08:38
Replies: 38
Views: 3,674
Posted By Mark1234

Considerably less extreme than the glider...

Considerably less extreme than the glider example, winch launches are a bit special (and unnatural :E) Even the pitts doesn't climb as steeply as a winch launch, and the glider has a lot less...
15th Feb 2012, 11:09
Replies: 34
GPS
Views: 2,858
Posted By Mark1234

My take: While it's very tempting to concern ones...

My take: While it's very tempting to concern ones self with ground distance, it's irrelevant. Aeroplanes fly in air, not ground! It's all about frames of reference.

Consider your track through the...
4th Feb 2012, 19:39
Replies: 43
Views: 5,304
Posted By Mark1234

Some background info for the discussion - as it...

Some background info for the discussion - as it *seems* we're talking about moorabbin:

Firstly, it's been a few years since I flew there, so apologies if any of this is out of date, or time has...
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