Monday, October 29, 2007

AMP'ed up, Part 1: The Centrifuge

So I finally finished my Aerospace Medicine Primary course (AMP). This is the course for training flight surgeons in the Air Force. They also have a separate residency program that goes for 2-3 years, but AMP is the starter course for new dudes like me. It starts with 4 weeks worth of powerpoint lectures put into Computer Based Training (CBT); I completed this when I first went to Korea. Then I went to San Antonio, Texas, for more hands-on training for 6 weeks (which included lots of more powerpoints as well).

Highlights included the centrifuge where they spin you like mad in a simulated cockpit on the arm of this machine, that looks like this.

This let you experience high "g" forces, which included 9 g's for 15 seconds. Let me tell you, this is like nothing you've ever experienced, and I've been on tons of rollercoasters and whatnot. One of my friends described it in a great way: it's like the hand of God is pushing you down, and flinging you across the universe. Everyone HATES this feeling, and I did too at first, but I got used to it.

So a little education in g forces. These forces usually press straight down on you, which causes pooling of blood in the vasculature of your lower extremities. Soon no blood reaches your heart. To combat this, you do anti-G straining maneuvers (AGSM), which includes flexing your whole lower body with all your strength, and doing a valsalva (taking a deep breath, and forcefully exhaling against a closed epiglottis). Both of these assist by creating pressures that force blood back up into your head. This usually allows you to tolerate these high g's and not pass out.

Well..... not so for me. Despite doing all this, I still GLOC'ed (general loss of consciousness) with the 9 g's for 15 seconds. And this is quite an experience. Most of the time, I didn't totally GLOC. I would lose my eyesight, lose control of my muscles and slump over, but I was still conscious of this, like I'd be, "Woah, this is weeeeeeiiiird". Thinking this in my head of course, because I couldn't speak since I had no motor control. See this for yourself. Here's an attempt at 15 seconds of 9 g's. You can hear the coach's voice over the intercom.



To finish this part up, I tried the the centrifuge 4 times (most people needed only 1-2 times to pass), and I still couldn't pass the section needed in order to fly in F-16's without restrictions. I'll still be able to fly in them, but just can't do hardcore air combat flights. I think there's something wrong with my heart, like it can't kickstart to warp speed. I'll be trying again in December when I go back to San Antonio for my Aircraft Mishap Investigation training.

Another quick highlight, Big Louie's Pizza... check it out! And it tasted good too.