  
       flight 
       training 
       for helicopters 
       with thanks to the
       helicopterpage
         
       Helicopters are 
       expensive. Helicopters are slow. Helicopters can't carry very much. 
       Helicopters run out of fuel before they have flown very far. Compared to 
       an airplane you sacrifice a tremendous amount of utility in exchange for 
       the following:  
       
        
      
       
        
       the ability to land 
         anywhere  
        
      
       
        
       the ability to fly very 
         low and slow (albeit not safely as we'll see below)  
        
       Helicopters are also fun 
       and challenging.  
       Helicopters suffer from 8 
       accidents per 100,000 hours flown and about 10 percent of accidents are 
       fatal (other data suggest that the fatal rate is closer to 1.4 per 
       100,000 hours). This is a similar safety record to general aviation 
       airplanes. As an inexperienced pilot of a cheap light helicopter, 
       however, your risk is at least 5 times higher than that of a Vietnam vet 
       flying a fancy turbine-powered helicopter. The accident rate for personal 
       helicopter flights, almost all of which are in cheap light machines, was 
       44 per 100,000 hours and 16 of those would be fatal. For practical 
       purposes, therefore, it seems that you're at least 10 times more likely 
       to kill yourself in a helicopter as you are in a fixed wing trainer such 
       as the Cessna 172, Diamond DA20/DA40, or Piper Warrior. 
       The good news about 
       helicopter safety is that it is largely under your control as the pilot. 
       If you want to cruise along for 25 miles skimming the ground 100' above 
       obstacles and then land in your friend's backyard, which is surrounded by 
       power lines and trees, you are asking for trouble. If you take off and 
       land at public airports and fly 500' above the terrain your risk is 
       probably not that different from doing the same trip in a small airplane. 
       As with other kinds of flying safety depends to a large extent on the 
       ratio between a pilot's level of confidence and level of skill. 
        
       
       Consider starting with an airplane
       On average, you are 
       required to accumulate least 45 hours of helicopter time before you will 
       get a Private certificate. In practice most students take much longer. 
       New pilots have to learn all the rules and regulations, how to read 
       charts and understand airspace, how to talk on the radio, how to navigate 
       when on a cross-country flight, and how to fly a helicopter.
        
       If you are already a 
       certificated airplane pilot you already have all of the required skills
       except knowing how to fly a helicopter. Most authorities relax 
       the flight time requirement to about 30 hours and in practice many 
       students are able to pass their check ride after 30 hours.  
       Unless you're completely 
       fearless the prospect of hurtling towards the ground at a lethal rate of 
       speed in an unfamiliar machine is frightening. Yet this is a required 
       manoeuvre when landing any aircraft. Fear makes it harder to learn. 
       Better to conquer your fear and get comfortable in the air in a much 
       cheaper rented fixed wing airplane than in an expensive helicopter.
        
       
       Your trainer
       
         
        You'll almost surely 
       start training in a Robinson R22, designed by former Bell engineer Frank 
       Robinson for folks who want to commute from their country homes in the 
       woods to their car dealerships, hospitals, or law offices in the city. 
       The R22 cruises fast and everything in the machine is designed to be as 
       simple, lightweight, and maintenance-free as possible. It is truly the 
       perfect helicopter except for one small problem: the market Robinson 
       designed it for does not exist. It turned out that the haute 
       bourgeoisie preferred to sit in traffic and melt the pavement 
       underneath their SUVs rather than take responsibility for learning to 
       operate a helicopter safely.  
       Flight schools, however, 
       were quick to notice that the R22 was the world's cheapest helicopter to 
       operate and began snapping them up. This proved to be a problem because 
       Frank Robinson never designed the R22 for training and probably would 
       have relaxed the high cruise speed requirement and put in a higher 
       inertia rotor system to allow more time to react to an engine failure.
        
       Fully fuelled, the R22 is 
       barely capable of hovering with 400 lbs. of pilot and instructor on 
       board. If you're a tad overweight, now is the time to start your diet. If 
       you're too fat, you'll have to learn in a turbine-powered Bell JetRanger, 
       which costs a fortune per hour because of its costly maintenance 
       requirements and thirst for fuel. 
       Old school helicopter 
       pilots will scoff at the Robinsons for a variety of reasons, including 
       the low inertia rotor system, but basically there are no alternatives. 
       Schweizer, for example, which bought the old Hughes design, only 
       manufactures a handful of piston-engine helicopters each year. 
        
       
       Choosing a Flight School and Instructor
       There are four ways to 
       lose a flight: weather is unfavourably cloudy or windy, instructor is not 
       available, helicopter is down for maintenance, helicopter has been 
       scheduled by another student. If you are training at a school with only 
       one helicopter and one instructor, the risk of being unable to fly is 
       very high.  
       Look for a school with at 
       least three training helicopters and two instructors.  
       Given that you don't know 
       how to fly, how do you evaluate an instructor? The best instructors are 
       relaxed and comfortable even as the student makes a lot of mistakes. The 
       best instructors are able to talk a student through a manoeuvre rather 
       than putting their hands on the controls and "demonstrating". Once you've 
       learned how to hold a hover and fly straight-and-level, take at least one 
       lesson with each instructor at your school and then pick the one whose 
       style suits you best. You'll probably learn at least 50 percent faster 
       with a really good instructor compared to an average instructor. 
        
       
       First Lesson: Ground
       Because so many students 
       have crashed R22s there are a bunch of special legal requirements 
       associated with the aircraft. You aren't allowed to get into the machine 
       at all until you've received and logged ground instruction.  
       The ground lesson is 
       partly about energy management in the event of an engine failure and 
       partly about not getting the helicopter into unusual attitudes. 
        
       As with airplanes, much 
       of the key to safety in a helicopter is energy management. In an airplane 
       you have potential energy (altitude) and kinetic energy (forward speed) 
       that can be traded off against each other to bring the airplane down 
       gently in the event of an engine failure or ordinary landing. The 
       helicopter has three kinds of energy: potential (altitude), kinetic 
       (forward speed), and angular momentum (blade speed).  
       In an airplane you can 
       make decisions about trading forms of energy very late in the day. For 
       example, if you pull the stick all the way back at 6000' above the ground 
       you will gradually slow down and eventually stall and perhaps enter a 
       spin. With many airplanes you could spin nearly all the way to the ground 
       before applying forward stick and opposite rudder to get back to a normal 
       flight condition. All without an engine.  
       In a helicopter, by 
       contrast, if the blades spin down more than 10-15% from their normal 
       velocity, there is no way to convert potential or kinetic energy into 
       spinning such that the helicopter will start to fly again. If you can't 
       restart your engine, therefore, your helicopter can very quickly become a 
       rock.  
       In a turbine-powered 
       helicopter like a Bell 206 JetRangers the blades are heavy and the blades 
       won't slow down for several seconds after an engine failure. In the 
       flyweight Robinson, however, after an engine failure you have no more 
       than 1.2 seconds to take exactly the right actions or the helicopter 
       cannot be recovered.  
       What if you do take all 
       the right actions? Suppose that you're up at 4000' and the engine quits. 
       You lower the collective pitch (lever on your left) immediately to 
       flatten the blades and allow them to be driven by the wind through which 
       the helicopter is now falling at 2000 feet-per-minute. You adjust the 
       cyclic (stick in front of you) for about 65 knots of forward speed. You 
       aim for a landing zone. The good news is that you don't need a very large 
       one but the bad news is that the glide ratio is 2:1 instead of an 
       airplane's 10:1 and therefore you don't have as large an area from which 
       to choose. As you get within about 50' from the ground you pull back the 
       cyclic to flare the helicopter and shed most of the forward speed. Just 
       as in an airplane this flare also arrests most of the vertical speed. At 
       the second to last moment you stop flaring and return the helicopter to 
       being parallel to the ground. Ideally at this point you are hovering 5' 
       or so above a soccer field and the blades are still spinning. Finally you 
       raise the collective as the helicopter falls, using the stored energy in 
       the blades against the force of gravity. You land gently on the skids. 
       (In practice the cyclic flare is more important than the "hovering 
       autorotation" at the end; a lot of people walk away from helicopter 
       engine failures if they get the cyclic flare right but can't manage to 
       pull the collective smoothly at the last moment.)  
       This all sounds good 
       until you look at the "deadman's curve". The marketing literature for 
       helicopters says "if the engine fails, you can autorotate down to a 
       smooth landing." The owner's manual, however, contains a little chart of 
       flight conditions from which it is impossible to landing without at least 
       bending the helicopter. Unfortunately these conditions are the very ones 
       in which nearly all helicopters seem to operate. If you're above 500', 
       for example, you're pretty safe. But TV station helicopters are often 
       lower than that when filming. Flying along at 65 knots is also good but 
       if the camera needs the pilot to hover the helicopter slows to a crawl.
        
       
       First Lesson: Air
       Before you get into the 
       air you'll probably spend about half an hour on a pre-flight inspection 
       of the helicopter. With most airplanes most of the critical pieces are 
       hidden underneath bodywork and not accessible except to a mechanic during 
       an oil change or 100-hour inspection. With the Robinson R22 the engine is 
       mostly flapping in the breeze and what is hidden can easily be accessed 
       via a flip-up door.  
       If the weather is nice 
       you'll probably remove the doors. This ensures that you'll be nice and 
       cool inside the machine. In theory you could look straight down while in 
       flight and scare yourself but in practice your attention will be focussed 
       on looking out the front and trying to hold the machine in a fixed 
       attitude relative to the horizon. So don't hesitate to fly your very 
       first lesson with the doors off. When the doors are off, it is good 
       practice to take everything out of your pockets and put them in the 
       baggage compartment underneath the seats. You don't want loose items 
       getting sucked out of the helicopter and contacting the tail rotor, the 
       fastest-rotating and most fragile part of the whole machine.  
       Sadly a big part of your 
       first lesson will be practicing the most difficult helicopter manoeuvre: 
       hovering. Hardly anyone is able to become proficient at hovering in less 
       than 5 or 6 hours of flight training. Every one of those hours is 
       exhausting. Much of the time is frustrating.  
       
       Learning to Hover
       A big selling point of 
       helicopters is that you can land in your backyard. Where then would be 
       the best place to learn to hover? An airport with a 12,000' runway and a 
       7,500' crosswind runway. You want a lot of open space where you're 
       guaranteed not to hit anything. You want somewhere that neighbours won't 
       complain about the noise. You want somewhere with long sight lines to the 
       horizon so that you won't concentrate your gaze in too close. You want 
       somewhere that you can get fuel when you run out. All roads lead to the 
       big airport! Generally the tower and ground controllers will give you 
       permission to practice hovering on whichever runway isn't be used that 
       day and/or over a seldom-used taxiway.  
       Most instructors will 
       start by giving you one control at a time. You take the anti-torque 
       pedals and they handle the cyclic and collective pitch. You practice 
       pedal turns. Then you take the collective while the instructor controls 
       the cyclic and pedals. You go up, you go down. Maybe you land. Then you 
       take the cyclic and the instructor takes the other controls and ... 1 
       second later the helicopter is oscillating like crazy and you hear "I 
       have the controls" in your headset. Any good instructor will alert you to 
       the fact that you need to be very light on the controls: "you fly with 
       pressures, not movements." The instructor will also tell you that there 
       is a bit of lag between the time that you put in a control input and the 
       time that the helicopter reacts. What most instructors  
       
         
         
           
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             Focus your gaze 
               at least 1/2 mile in the distance if the sightlines in your 
               practice area are long enough.  
             
             
              
             As soon as the 
               helicopter is handed to you it will start to drift to the right. 
               The tail rotor is counterbalancing engine torque but at the same 
               time is pushing the machine to the right. Expect to hold a little 
               bit of left pressure on the cyclic to avoid this translational 
               drift.  
             
             
              
             Don't put 
               in and hold a control input pressure. 
               Suppose the helicopter is moving forward a bit. You press back on 
               the cyclic and hold that pressure. One second later the 
               helicopter has responded to the initial pressure by arresting its 
               forward creep. One second after that the helicopter has responded 
               to two seconds of continuous pressure by rushing backwards at a 
               frightening clip. If the helo is moving forward, press backwards 
               for a split-second then try to return the cyclic to a neutral 
               position. See if the helicopter stops creeping. If so, great. If 
               not, try another little stab of back pressure. Although every 
               second or two you are doing something with the cyclic, in any 
               given instant you need not be putting in any cyclic input. Nudge 
               the cyclic and then return to centre. Nudge and then return.
              
             
             
              
             After an hour or 
               two the instructor might be doing more harm than good in handling 
               the other two controls. Everything is cross-coupled so if he is 
               messing with the collective or the pedals it will require you to 
               take action with the cyclic. It is actually easier to handle all 
               three controls because at least the machine isn't doing 
               completely unpredictable things from your point of view. 
              
             
             
              
             Take a break 
               every 20 minutes by practicing takeoffs, trips around the 
               pattern, and approaches to landings. 
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