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Using the ICARUS Device to Simulate IFR Conditions

ByHank Gibson

Most of us who have been through instrument training are familiar with the traditional view limiting devices. There is the original hood, which does a decent job of blocking a pilot’s view of outside, but there are still gaps that allow “peeking”, though that peeking doesn’t really help a pilot fly an approach. It does help them figure out which way is up, so it’s not a true simulation.

The other problem with a hood is the process of putting it on to begin simulating IFR conditions, then taking it off when it’s time to land. This process takes time and the instructor has to take the controls (or the autopilot flies), losing some of the realism of the simulation.

Overall, an IFR hood is relatively comfortable. The elastic band sits under your headset, doesn’t squeeze your heard, and doesn’t press underneath your ear cups of the headset, giving you a headache. Hoods are large and somewhat unwieldy.

Foggles are another way to simulate IFR conditions for training. Most of the time, these are safety glasses that have most of the lens blacked out or fogged out, leaving little slits at the bottom for the pilot’s eyes to see the instruments.

Foggles aren’t quite as good as an IFR hood at blocking the outside. Due to their shape, there are often cracks that allow more “peeking” then a hood. The process of beginning to simulate IFR conditions and ending the simulated IFR conditions is easier though, since all the pilot has to do is put the foggles on or slip them off, which can often be done one handed (putting them on can be more difficult one handed since they have to fit underneath your headset). Wearing them for a long period of time can get painful as your headset is probably going to start crushing them against the side of your head.

The best comfort and view limiting combination I have found, so far, is called the ViBAN. It’s very comfortable and does a really good job of simulating IFR by blocking a view of the outside.

What’s the whole goal behind a view limiting device? When a pilot starts instrument training, ideally, all the training would take place in the clouds, since that is why someone get’s an instrument rating. As we all know, this isn’t possible, hence the need to simulate IFR conditions. The problem with simulating IFR is, it’s not true IFR. True IFR conditions are different then what a hood or a set of foggles can simulate. This can lead to spatial disorientation if a fresh instrument pilot enters the clouds for the first time, having done all his training in simulated conditions.

I’ve even heard a story of a pilot who did all his IFR training with a hood, passed his check ride, went into the clouds the first time, and put the hood on because he was getting disoriented since he hadn’t ever experienced true IFR.

What about full motion simulators? How I wish every airport had a full motion simulator for instrument training. Full motion sims are truly the best way to simulate IFR conditions. A pilot can easily get spatially disoriented in a sim if he or she isn’t careful. It’s a great way to simulate IFR conditions, but, alas, this just isn’t possible.

Are we doomed to just do an okay job of training instrument pilots in simulated IFR conditions with a hood or foggles?

Nope, at least not anymore.

Enter the ICARUS Device. The ICARUS Device, which stands for Instrument Conditions Awareness Recognition and Understanding System, is an amazing piece of equipment which truly simulates IFR conditions in the training environment. The ICARUS is a plastic shield that uses a Polymer Dispersed Liquid Crystal film that allows the degradation of a pilot’s visibility. It clips on to a baseball cap and is attached to a battery. That battery is then bluetoothed to an iPad or iPhone App that allows the instructor to put the pilot into and take him out of simulated IFR conditions.

Originally designed for helicopter training, it’s an excellent tool for fixed wing IFR training too. I’ve been using it for the last month and a half and I am hooked. The customer’s that I have used it with truly say that they cannot see a thing outside. Because the plastic shield turns white, it really does give the view that the pilot is in the clouds. The inner ear certainly believes it. The curve of it fits the glare shield in most planes nicely (there is some custom cutting that would have to take place for specifically rounded glare shields, but it fits Cirrus and Piper Saratogas nicely, the two planes I have used it in), and it sits away from the pilot’s face, blocking out all windows, which is what clouds do.

The greatest thing from an instructor’s standpoint is the ICARUS Device app. The pilot puts the device on before taxi and I set the app to VMC. This completely clears the ICARUS Device so the pilot can see just fine for taxi and takeoff. Then, at about 400 AGL, I tap the <1/2 VIS button on the app, and boom, the pilot is in the clouds. I even have a time delay to slowly make the ICARUS Device opaque to simulate slowly entering the clouds. I do the same thing on an approach, except in the reverse order, simulating we are slowly exiting the clouds.

The ICARUS Device is a game changer for IFR training. It’s comfortable, easy to use, the battery lasts for a long time (though bring a standard USB charging cord with you in the plane because the battery failure mode makes the ICARUS Device opaque instead of transparent. You don’t want that to happen at 200 AGL!), and, most important, it truly simulates IFR conditions.

After using it, I believe all flight schools and CFII should get one of these, both in the fixed wing and helicopter world. It’s the best option for simulating IFR conditions.

Checkout the ICARUS Device website for more information and to hear the story of the company.

Texas Top Aviation, LLC was given an ICARUS Device by the ICARUS Device company to test. Texas Top Aviation, LLC was not paid for our above opinion on the ICARUS Device (trust me, if it was terrible, I would have told you!).

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    ByMike Hostage

    You are hand-flying an in-the-weather descent, power back, heading for the FAF. You start a 30 degree banked turn at your lead point to cross the FAF, when your passenger behind you gasps. Looking over your shoulder, you see he has spilled his drink into his lap…too bad for him! However, when you turn your head back to your panel, your inner ear tumbles and you see 45 degrees of bank, 15 degrees nose low, airspeed increasing.

    Congratulations! You have managed to get distracted and sucked into an unusual attitude recovery. By the book, you should roll wings level, pull to the horizon, and adjust power as necessary to keep the airspeed within limits. In this scenario, if you had not experienced vertigo, you might have been able to roll to less than 30 degrees of bank, recover your turn, pull the nose up to less than the original descent attitude, pulled a bit of power to slow back to your desired penetration speed and then resumed your desired ground track. However, this would only be appropriate if you had full situational awareness as to the deviations caused by the look over your shoulder, plus full confidence that the moderate corrective actions would put you back on your desired flight path.

    As a military aviator, I learned unusual attitude recoveries based upon hard maneuvering at extreme pitch and bank angles. In the hard-maneuvering environment, an unusual attitude could be 90 degrees straight up, airspeed decreasing below 120 kts…or 80 degrees nose low, 135 degrees of bank, airspeed increasing through 500 kts… etc. In these cases, understanding angle of attack, or AOA, is critical to maintaining controlled flight and returning to a normal attitude.

    In an extreme nose-high attitude, a military aviator is trained to roll the aircraft to 90 degrees of bank, ease off the back-stick pressure to reduce AOA, add power as required, and allow the nose to slice back towards level, rolling to wings level as the nose approaches the horizon. If nose low, the recovery procedure is to roll rapidly, within asymmetric g limits, until wings level, then to pull at optimum g loading to recover to level flight. For the nose-low recovery, power was normally reduced until airspeed could be assessed and brought under control. However, when doing the nose-low pullout at 7-9 gs, pulling the power for too long would leave you much to slow to resume combat.

    The AOA gauge on a fighter’s glare shield is a primary reference during hard maneuvering and for landing. The AOA for optimum maneuvering is 13 degrees, displayed as the green circle or “green donut” on the gauge. The red chevron on top represents a slow condition of 15 degrees or more and the yellow lower chevron represents 11 degrees or less.

    For normal landing in the F-16C, the pilot slows to 220 kts and configures abeam the touchdown point while mentally computing the final approach airspeed of 136 kts plus 4 additional knots for each 1000 lbs of fuel. When rolling off the perch and flying the final turn, the pilot would usually only glance once at the airspeed once to ensure final turn airspeed of 180 kts while using the AOA sight gauge as the primary indicator of a best performance turn. As long as the AOA was green donut (13 degrees) or less, you would not stall. If on speed and 13 degrees wasn’t going to get you around the turn to line up with the runway, you knew you were going to overshoot. You never wanted to see the red chevron of 15 degrees or more as that meant you were too slow, pulling too hard, and in danger of building an un-recoverable sink rate!

    Few GA aircraft are currently equipped with AOA indicators, though there are several after market devices available for retrofit. However, knowing the impact of AOA and how to manage it is vital to safe aviating, even without an AOA gauge. The bottom line is, as long as you don’t ask the wing to produce more angle of attack than it can handle, you won’t stall.

    Practicing final turn stalls, to know what the wing feels like as you get too slow or pull too much on the controls, increasing AOA past the critical point, will keep you safe when you encounter that unexpected overshooting wind or you find yourself inadvertently on too tight of a downwind leg. Better to overshoot or take it around to try again, than to pull too hard and exceed critical AOA.

    Mike Hostage is a retired USAF pilot with 37 years of experience, flying a wide variety of aircraft.  An instructor pilot for more than half of his 4800 flight hours, Mike is currently qualified in a Cirrus SR-22T and regularly flies his two homebuilt sailplanes.

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  • Weather Avoidance

    ByHank Gibson

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    A few things are introduced to the equation when pilots start flying higher, faster, and farther.  When you start flying over longer distances, weather becomes more of an issue.  On a quick hop from, say, Austin to Dallas, you can be pretty sure of what the weather will be since it’s a short trip.  When you fly from Austin to LA, leave in the morning, land once along the way, and arrive in the afternoon after spending six and a half hours in the air, weather can change a lot in that amount of time.

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    For a long time, I was happy if an FBO had a radio where I could tune the ATIS or automated weather before getting into the plane. This would allow me to skip listening to the weather in the airplane with the engine running, giving me a quicker exit from the ramp while burning a little less fuel. I would also be able to brief my taxi route from the ramp since I would know which runway was in use before getting in the plane.

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    ATIS App Symbol

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    BendixKing AeroVue Touch

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    N578AG

     

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    trio-of-hondajets

     

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