Thursday, July 31, 2008

Saving the planet, one seahorse at a time

This post has nothing to do with helicopters. I mentioned the other day that I went to a seahorse farm. First, let me give you a little background.

Ocean thermal energy conversion (OTEC) is a method for generating electricity by exploiting the temperature difference between cold, deep water and warm, shallow water.

Since Hawaii has both high energy costs and deep ocean water, years ago the government installed an OTEC facility in hopes of providing an alternative energy source. They plumbed pipes to pull cold water from hundreds of feet down off the Kona coast.

The system worked, but it wasn't very efficient. It cost them 10 cents to generate the energy they could sell for 11 cents.

Enter private aquaculturists, who recognized the value of this deep, nutrient-rich water for farming sea life. Desperate for an alternative revenue source for their alternative energy plant, the government began leasing land near the facility, as well as access to the water.

Today, Keohole Point beside Kona International Airport boasts a sprawling community of aquaculture companies that grow just about everything you can imagine: abalone, mussels, microalgae, lobsters, and even sushi-grade yellowtail.

One of these companies is Ocean Rider, Inc., which operates the only seahorse farm in the world. They sell farm-raised, domesticated seahorses directly to home aquarium owners. Their business has deeply undercut the poaching of wild seahorses worldwide, giving this endangered creature a fighting chance for a future.

Incidentally, seahorses mate for life, and separating them from their mate increases the probability of illness or death. For this reason, Ocean Rider only sells seahorses in mated pairs.

If you're ever in Kona, I highly recommend the tour at Ocean Rider Seahorse Farm. It was awesome. If you want to buy their seahorses, you can at Seahorse.com.

Here's a movie of some of their seahorses stampeding for a cloud of food that was dropped in the tank. If you look closely, you can see some of the mated pairs holding each other's tails, which they often do.

Tuesday, July 29, 2008

Helicopters are always trying to crash

Several friends have mentioned that they are reading this blog. Thanks, it really means a lot. With school six hours a day, plus commute, plus studying, I don't have a lot of free time, and I spend much of it writing, rewriting, and finding images for posts. It's the best way I have of sharing this experience with everyone. That means you.

Progress: Today I moved the helicopter around the airport with little assistance from my instructor. He still takes hold when I have an accidental spasm towards the fuel trucks or a multi-million dollar private jet.

I operate all of the controls during regular flight, except when Lee is demonstrating a maneuver. Don't confuse that with being completely in control.

A helicopter is an unstable system that requires constant effort to inhibit its natural tendency towards chaos. Or, as instructors explain it: A helicopter is always trying to crash, and the pilot's job is to keep it from doing so.

What that means for me from second to second is that things are constantly going wrong, and I'm constantly trying to fix them, like a cartoon character sticking finger after finger into a dyke that keeps springing leaks.

As soon as I stop the unintended climb, I've got to correct a loss of airspeed. I'm no sooner done with that then the engine's manifold pressure is too low. Ok, manifold pressure looks good, but we're out of trim, skidding sideways through the air. Fixed that, but now we're losing altitude and I'm late informing the tower of our position. And on and on. I don't have time to look out my door anymore, I'm way too busy!

Lee took the controls for a minute so I could shoot some video for you. In order of appearance: New subdivision on raw lava (right turn, looking straight down), nice blue coastline, Four Seasons Resort and golf course, relatively recent lava flows (1800's?), and (in the distance) Mauna Loa volcano, shrouded in her own fumes.

Sorry about the wind blast, but as I've said, there's nothing next to me but sky. By the way, if there is anything you're curious about, send an email or leave me a comment, and I'll try to explain or shoot some footage.

Sunday, July 27, 2008

Helicopters are just so misunderstood

Most people grasp that an airplane can fly, at least for a while, if its engines stop working. Ask ten people on the street what happens when a helicopter engine fails, and probably all ten will tell you the helicopter will fall out of the sky.

Although false, this is a deeply ingrained popular belief, so much so that even I was a little apprehensive when my instructor told me that today we would practice descending without engine power.

The maneuver is called autorotation, because, as the helicopter descends, the blades are automatically rotated by upward flowing air, rather than the (failed) engine.

The effect is similar to the way a maple seed spins gradually to the ground, as you can see in these videos of autorotation in a previous post.

Despite my efforts to imagine riding a maple seed to the ground, I didn't really know what an autorotation would feel like. I guess I expected something like the freefall rides at Six Flags, or like the one they have on the Stratosphere building in Las Vegas. I hate those rides.

So I caught my breath when, while cruising at 1800 feet over immaculate black lava flows and a glistening blue tropical bay, my instructor said, "Autorotation in three....two....one."

He cut the throttle, and the engine tachometer needle collapsed to the bottom of its housing. For the briefest moment, I felt us fall, and my stomach threatened to rise into my ribcage.

Then, just as quickly, I settled back into my seat, and we kept flying. Sure, we were descending, but we definitely weren't falling. We weren't even descending that fast.

Over the course of the next minute, I watched as the ebony lava below gradually rose towards us. The helicopter was quieter without the engine noise, and there was a low, mechanical hum. It reminded me of driving down a mountain road in first gear. You feel the tension of the machine controlling your speed; you know that if you were forced to crash, you might be hurt, but you'd survive.

Before we reached the surface, Lee halted our descent completely with a quick adjustment of the blades, as he would if we really had to settle down without power. Rather than land this time, he re-engaged the engine, and we climbed back into the sky.

So...would you rather have your engine fail in a helicopter, which can float down and settle softly to the ground just about anywhere, or an airplane, which needs several hundred feet of flat land and hurtles in at 60+ miles per hour? Spread the word.

Friday, July 25, 2008

New habits, hard drugs, and flying helicopters

I've noticed I've developed a new habit. As soon as I depart the airport and begin accelerating to cruising speed, a little voice in my head startles me with a bark: "Don't forget to check your gauges!" Yikes, that's right, check gauges!

So I look down to verify that my airspeed, climb rate, and manifold pressure are all normal. Imagine my surprise when I'm confronted with the miles per hour, RPM, and gasoline gauges in my Jeep.

Oh, that's right, I'm driving. Well, I suppose it's good to have the habit.

Speaking of which, I have a new metaphor for hovering. I've been comparing hovering to balancing. That's accurate. But if you're only two weeks into helicopter training, hovering isn't so much like balancing as it is like balancing drunk.

I'm reminded of a passage from Hunter S. Thompson's Fear and Loathing in Las Vegas:

This is the main advantage of ether: it makes you behave like the village drunkard in some early Irish novel...total loss of all basic motor skills: Blurred vision, no balance, numb tongue -- severance of all connection between the body and the brain. Which is interesting, because the brain continues to function more or less normally...you can actually watch yourself behaving in this terrible way, but you can't control it.

That last line nails it precisely. Hovering over a short distance, say from the helicopter's parking space to the fuel pump, shouldn't be that difficult. And yet, when I try, it's like I'm already six shots deep into a bottle of Jose Cuervo.

My instructor, Lee, sits patiently beside me with one hand on the collective to keep us floating a few feet over the asphalt. I operate the other controls and focus intently on the fueling area, but I just...can't...get there. The beast swirls this way and that, stumbling several meters forward, then a few back, lurching left, then right, pitching at weird angles all the time, teetering on the edge of disaster, then swaying back through level before groping forward again.

...you can actually watch yourself behaving in this terrible way, but you can't control it.

Drunken helicoptering! Hunter would be proud.

Thursday, July 24, 2008

Hovering and my out-of-body experience

Today I hovered for the first time using all flight controls without any assistance from my instructor. He tells me it lasted for 20 seconds or so before he had to act. I was shocked, because I was certain it was a minute or longer. I'll explain more about that towards the end of this post.

I mentioned before that learning to fly a helicopter is a physical endeavor involving feeling the helicopter as an extension of yourself and then learning to balance it.

Think about the last time you learned to balance something, perhaps a basketball on your finger, or your body on a bicycle, in a handstand, or even on one foot. How did it happen?

I suspect that when you began, you were able to balance for only an extremely short period of time. Very quickly, things started to fall out of balance, you likely made a few last ditch moves of rapidly increasing magnitude, and then you lost it. The classic "whoa whoa WHOA"...done.

With practice, you extended the time before the loss of balance. Your movements became more subtle, your corrections less excessive, and more time elapsed before the first "whoa." With enough practice, you extended the time long enough that the loss of balance never occurred; you could balance until you decided to stop.

During this process of practice and improvement, you didn't think about how to improve. You didn't think "Oh it's going left, quick I need to reach more left!" The truth is, you don't have time to think about it. If you think about it, your reaction is too slow, and you lose the balance.

This is the amazing thing: Learning to balance happens completely outside the realm of conscious thought. It's as if your body learns it without your mind.

This is exactly the process of learning to fly a helicopter, and holding a hover is the most acute example. You may recall that my first hover lasted two seconds, after which I entered "whoa whoa WHOA," sending the helicopter careening off at a deranged angle, and Lee had to take hold and bring it back.

That first time, I was only using my right hand, while Lee was managing the left hand and feet. Fast forward to today, when I was controlling all four flight controls (the cyclic, the collective, and right and left pedals) using my right hand, left hand, and right and left feet, respectively.

Today, as before, Lee had me focus on a palm tree several hundred yards in front of us and then just feel the hover. This time, for the first time, I really did concentrate on the tree -- and nothing else. I stopped trying to control my limbs, I stopped thinking about them or their motion.

The helicopter hovered. It was a bizarre sensation. It moved around a little, but as soon as it started to lean, I just willed it back. "Willed" is the best word I can use to describe it. It actually felt more telekinetic, like a medium might bend a spoon or move a bowl using mind energy alone. I just intensely silently expressed a desire for the helicopter to ease back into stillness...and it did.

I had no conscious interaction with my limbs. Although my hands and feet must have been making countless tiny corrections over fractions of seconds to maintain the hover, I have no memory of their motion. I can only remember the tree. (In a way, this was a little disappointing; I was so focused on the tree that I missed my own first hover.)

Actually, I do remember two specific movements, one by my right arm and one by my left foot. Right after each of these, I lost the hover and Lee had to act. So if I started thinking about a hand or foot, things went to hell immediately.

Afterwards, I was sure my longest stretch of unassisted hover had lasted a minute or more. Lee said more like 20 seconds. I still can't understand that, because it felt so long.

I can come up with only one explanation. Have you ever been "in the zone" while playing a sport? It feels like time slows down, so you see and react much faster, often faster than your opponent. I think that's the same effect I felt today. When you are in a state of calm but intense concentration during a full-body physical endeavor, time gets stretched and feels longer than it is.

So maybe it was only 20 seconds. But it was pretty cool, anyway.

Tuesday, July 22, 2008

No time to think

So far, my favorite thing about learning to fly a helicopter is how hard my instructor is pushing me. Every day, I feel like a juggler who has just barely learned to add another ball into the mix, and my instructor throws me two more. But, um, I'm not even very good with these ba---well, ok...

Maybe it's because of my short window in Hawaii, maybe it's just Lee, maybe they always do this. But it's a good feeling to have someone ask you to do something you are pretty certain you can't do, and in the asking make it clear they have absolutely no doubt you can do it.

Lee tells me I will fly by myself ("solo") the weekend of August 2. That's such an outrageous claim, it's laughable. It's July 22, and I can't keep the thing under control for a full minute, and that's with him handling the radio, minding the gauges, watching for air traffic, and managing at least half of the flight controls. Not to mention taking off and landing, which by my estimation are both fairly important to any successful flight.

For me to solo August 2 goes beyond utter madness and into pure fantasy. I'm not kidding. It's like if somebody told you that you will earn a million bucks this year, or that your favorite celebrity will meet you in a coffee shop and fall in love with you.

The odd thing is, he says it with a completely straight face.

A new perspective

It's a strange thing to find yourself in a place you couldn't even imagine not long ago.

When I wrote this, I was scared to death of being thousands of feet up in tiny helicopter with no door beside me, mere inches from oblivion. I don't think I was completely honest about the extent of my fear. You know how we hide fears, even from ourselves, hoping they will just go away.

When I learned that my flight school flies with the doors off, I was confronted with circumstances I didn't know how to handle. I didn't think I could do it. Or rather, I was pretty sure I couldn't. But there was already too much momentum towards Hawaii to stop.

I suppose that's what my high school sweetheart meant when she told me, "You just have to jump off cliffs and build your wings on the way down." Give yourself no way back, and you'll find a way forward.

My first right turn in the helicopter was tough, in retrospect. The only feeling stronger than panic was the notion that if I panicked I would either fall out or cause my instructor to crash. So I sat scared and pretended not to be.

Yesterday, I found myself in another right turn, staring down through five hundred feet of nothingness to the swerving green ground...and enjoying it.

Then I made the mistake of mentioning this discovery to my instructor. In his ever-chipper British accent, he said, "Great, let's see if I can make it bother you."

He proceeded to lean the helicopter into a 50-degree right bank, which of course means your right side is more the bottom than your bottom is. Except I didn't have a door, so there was no bottom.

You know what? It was pretty amazing, actually. I watched the kaleidoscope of dense vegetation and scattered buildings wheel crazily below me and felt nothing more than amused, relaxed curiosity. Oh look, that looks like some kind of plant nursery, and look there, I see a swimming pool.

It's a strange thing to find yourself in a place you couldn't even imagine not long ago.