CROSSWIND LANDINGS

With a single runway like we have at Crystal and wind blowing straight across, standard landing patterns will involve either a headwind or a tailwind on base leg. Choose the headwind if you have an option, to allow more time for judging and executing the approach. When doing this, many pilots erroneously start their final turn early and then need to extend it throughout most of the approach. This is counterproductive, as it delays lining up and getting the windward wing down where it belongs for the actual landing. Instead, fly your base leg straight to the last turn, make it square, and give yourself more time on final to line up.

That base leg into the wind is where the problem of wind gradient may be greatest. A wide pattern might consume too much height too soon, leaving less than enough for final approach, so move your base leg (and maybe downwind leg as well) closer to the threshold. Then if it still looks questionable, angle the base leg in even further and change the aim point to a spot you know you can reach in normal landing configuration.

As you roll out of this turn to final, the wind under your upper (windward) wing can make lowering that wing and lining up with the runway difficult and time-consuming. This is serious. Many pilots instinctively fly a curved base/final leg in this situation, but that only delays leveling and lining up until the last, lowest moment – or prevents it completely. Whatever you do, retain enough height to make a square, comfortable final turn, allowing ample time to line up a straight approach with the windward wing low, as it always should be.

If you must fly the base leg with a tailwind, do start the final turn early to ensure that you don’t overshoot. It will take only a fraction of the normal time to reach that final turn, and an unwary pilot could turn too late and too high. Overshooting would mean having to face the wind again on a long, curved final approach with that same troublesome turn away from the wind coming just before touchdown.

CRAB OR SLIP?

On final approach in a crosswind, should you employ a slip or a crab to stay lined up? Each method has advantages and disadvantages. A slip may be easier for inexperienced pilots to handle, keeping the fuselage better aligned with the centerline of approach. (Always hold the windward wing low of course, whether using a sideslip for directional control or a forward slip for glide path control. If you slide off center in that direction, it’s easy to correct by leveling the wings and drifting downwind to the proper alignment.) The disadvantage of slipping at very low altitude is that a late recovery could bring the low wingtip dangerously close to obstacles near the threshold, runway lights, or even the ground.

Crabbing requires a subtle feel for the air and the ship. Its advantage is the wings remain horizontal, greatly reducing the chance of a ground loop. But the fuselage is traveling sideways over the ground, and must be redirected with rudder at the last moment to avoid side-loading the wheel and airframe. Try a compromise, using lesser degrees of both slip and crab, to minimize the disadvantages of each.

If you’re slightly off-line from the runway on final approach, with or without a crosswind, the simplest solution is best: bank (very soon and very briefly) in the direction you need to slide. This is an uncoordinated maneuver and therefore inefficient, but you’re trying to get down so that’s not important.

In crosswinds, simply rolling straight to a normal stop requires holding windward wing low and countering with opposite rudder. Turning off into the wind is easy but turning off downwind is sometimes not even possible. Directional control will erode as speed bleeds off, so try to accomplish any turn away from the wind while you still have sufficient airspeed for full control. At slow speed you’ll eventually weathervane off-line from your chosen heading, so be prepared to stop rather than careening out of control.

In gliders with skids or nose wheels, holding back stick during the slow-down phase of taxi makes it easier to steer by keeping weight off the nose. It’s important, though, to not haul back on the stick until you’re well below flying speed, so there’s no possibility of lifting off again. For 2-33s and similar craft, it’s possible to roll nearly to a stop before touching the skid down by using a high angle of attack and spoilers to slow the ship with aerodynamic drag instead of friction. Once you have the knack of ‘aero braking’ it’s easy to be precise about your stopping point this way, with very little use of wheel brake. This saves wear on the skid plate, and feels and sounds much better too. But! Be sure to put the skid or nose wheel down before either wing tip touches. Otherwise the downed wing will slow, pulling the ship into an awkward mini ground loop rocking the nose up and down on the skid, harmless but ugly.

Tail-draggers on the other hand need tail wheels held off for better steering control. If you use too much forward stick or too much wheel brake, though, you risk nosing over. Moderation, moderation!

In strong crosswinds loss of directional control at the end of taxi is inevitable. Plan for that and manage your energy so it occurs in a safe and convenient place – preferably not in the middle of a busy runway… Whatever happens prior to this point, unless you end up pointed straight into the wind you’ll always need fully crossed controls several seconds before stop.

In the most extreme crosswinds with only one strip available it may be safer to land diagonally, or even transverse to the strip There must be no other traffic present and you need a suitable run of smooth ground without obstructions, but at many airports this could be a viable option. If there are runway lights, missing them is your number two priority… (I’ve landed crosswise at Crystal twice, and was glad both times that the option was available!)

With increasing experience you’ll find it easier to rely on feel, executing each landing and taxi individually, one moment at a time. With sufficient skill, crosswinds are not scary, they’re fun!

CROSSWIND LANDINGS

With a single runway like we have at Crystal and wind blowing straight across, standard landing patterns will involve either a headwind or a tailwind on base leg. Choose the headwind if you have an option, to allow more time for judging and executing the approach. When doing this, many pilots erroneously start their final turn early and then need to extend it throughout most of the approach. This is counterproductive, as it delays lining up and getting the windward wing down where it belongs for the actual landing. Instead, fly your base leg straight to the last turn, make it square, and give yourself more time on final to line up.

That base leg into the wind is where the problem of wind gradient may be greatest. A wide pattern might consume too much height too soon, leaving less than enough for final approach, so move your base leg (and maybe downwind leg as well) closer to the threshold. Then if it still looks questionable, angle the base leg in even further and change the aim point to a spot you know you can reach in normal landing configuration.

As you roll out of this turn to final, the wind under your upper (windward) wing can make lowering that wing and lining up with the runway difficult and time-consuming. This is serious. Many pilots instinctively fly a curved base/final leg in this situation, but that only delays leveling and lining up until the last, lowest moment – or prevents it completely. Whatever you do, retain enough height to make a square, comfortable final turn, allowing ample time to line up a straight approach with the windward wing low, as it always should be.

If you must fly the base leg with a tailwind, do start the final turn early to ensure that you don’t overshoot. It will take only a fraction of the normal time to reach that final turn, and an unwary pilot could turn too late and too high. Overshooting would mean having to face the wind again on a long, curved final approach with that same troublesome turn away from the wind coming just before touchdown.

CRAB OR SLIP?

On final approach in a crosswind, should you employ a slip or a crab to stay lined up? Each method has advantages and disadvantages. A slip may be easier for inexperienced pilots to handle, keeping the fuselage better aligned with the centerline of approach. (Always hold the windward wing low of course, whether using a sideslip for directional control or a forward slip for glide path control. If you slide off center in that direction, it’s easy to correct by leveling the wings and drifting downwind to the proper alignment.) The disadvantage of slipping at very low altitude is that a late recovery could bring the low wingtip dangerously close to obstacles near the threshold, runway lights, or even the ground.

Crabbing requires a subtle feel for the air and the ship. Its advantage is the wings remain horizontal, greatly reducing the chance of a ground loop. But the fuselage is traveling sideways over the ground, and must be redirected with rudder at the last moment to avoid side-loading the wheel and airframe. Try a compromise, using lesser degrees of both slip and crab, to minimize the disadvantages of each.

If you’re slightly off-line from the runway on final approach, with or without a crosswind, the simplest solution is best: bank (very soon and very briefly) in the direction you need to slide. This is an uncoordinated maneuver and therefore inefficient, but you’re trying to get down so that’s not important.

In crosswinds, simply rolling straight to a normal stop requires holding windward wing low and countering with opposite rudder. Turning off into the wind is easy but turning off downwind is sometimes not even possible. Directional control will erode as speed bleeds off, so try to accomplish any turn away from the wind while you still have sufficient airspeed for full control. At slow speed you’ll eventually weathervane off-line from your chosen heading, so be prepared to stop rather than careening out of control.

In gliders with skids or nose wheels, holding back stick during the slow-down phase of taxi makes it easier to steer by keeping weight off the nose. It’s important, though, to not haul back on the stick until you’re well below flying speed, so there’s no possibility of lifting off again. For 2-33s and similar craft, it’s possible to roll nearly to a stop before touching the skid down by using a high angle of attack and spoilers to slow the ship with aerodynamic drag instead of friction. Once you have the knack of ‘aero braking’ it’s easy to be precise about your stopping point this way, with very little use of wheel brake. This saves wear on the skid plate, and feels and sounds much better too. But! Be sure to put the skid or nose wheel down before either wing tip touches. Otherwise the downed wing will slow, pulling the ship into an awkward mini ground loop rocking the nose up and down on the skid, harmless but ugly.

Tail-draggers on the other hand need tail wheels held off for better steering control. If you use too much forward stick or too much wheel brake, though, you risk nosing over. Moderation, moderation!

In strong crosswinds loss of directional control at the end of taxi is inevitable. Plan for that and manage your energy so it occurs in a safe and convenient place – preferably not in the middle of a busy runway… Whatever happens prior to this point, unless you end up pointed straight into the wind you’ll always need fully crossed controls several seconds before stop.

In the most extreme crosswinds with only one strip available it may be safer to land diagonally, or even transverse to the strip There must be no other traffic present and you need a suitable run of smooth ground without obstructions, but at many airports this could be a viable option. If there are runway lights, missing them is your number two priority… (I’ve landed crosswise at Crystal twice, and was glad both times that the option was available!)

With increasing experience you’ll find it easier to rely on feel, executing each landing and taxi individually, one moment at a time. With sufficient skill, crosswinds are not scary, they’re fun!

THUMBS UP

Yes, it’s been ‘soarable’ every day for a long time now, like every summer, but this season has delivered little of the TERRIFIC thermal conditions our area is known for — so far.  The coming weekend might make up for some of that, with a warming trend and light westerlies generating nearly perfect soaring conditions each day of the ‘foreseeable’ future.

SEE YOU SOON!

A SENSIBLE APPROACH

First, once committed to land, don’t trick yourself into doing something impractical or unsafe for the sake of holding to some arbitrary position and altitude. Keep things simple, so that if you do need to make some adjustment the solution will be clear.

Use crisp turns when turning base and final. There’s an insidious tendency for all of us to bank less than we need near the ground. Wide turns in the pattern consume much time and room, possibly carrying you beyond where you meant to be and shortening the time you have on straight legs to judge and recalibrate the approach. If you find you’ve started a steep turn too soon, rolling back to a flatter, longer turn is easy and safe.

Mathematically, 45-degree banks yield the most efficient change of direction, but in landing efficiency shouldn’t matter. In a coordinated turn the lower wing is already moving slower than the high wing, which gives it a higher angle of attack (closer to stall). Sailplanes’ longer wings and relatively slow speed make this difference extremely significant. That reluctance to bank tempts pilots to skid their turns down low, further slowing the slower wing and accelerating the faster one while altering the actual flight path very little. This is the classic prescription for a spin in any situation, especially turning into the wind at low altitude, with wind gradient increasing the difference in airspeed between the two wings. And if all this happens while turning final, you’ll be too near the ground for safe recovery from a spin!

In many emergency scenarios steep turns near the ground are vital. Full control in banks of 60+ degrees should be well within the capability of any proficient pilot. Such skill and confidence you must gain – and maintain. If you feel uneasy banking near the ground, realize that this anxiety itself is a real safety problem. There is no more important time than landing for a pilot’s actions to be effective instead of fearful. (And as with every other aspect of soaring, safety always supersedes standard procedure.)

This same instinctive reluctance to bank near the ground invites yet another common error: rolling out of the final turn with over-eager aileron and little or no rudder. The result, again, is adverse yaw toward the rising wing. By coming out of a left turn with excessive right stick and little or no right rudder, you cause an unwanted yaw to the left – into the turn you’re leaving, and away from where you want to go.

Though very steep turns may feel spooky, the only danger is failing to complete one before touch down. Don’t be afraid of steep banks, but do be afraid of skidding turns anywhere near the earth – whether it’s your landing field or a mountainside. Talk to yourself if it helps, but never skid turns. That’s what the yaw string is for. Use it!

Think of your base-to-final turn as the most dangerous point of every flight. With traffic potentially merging from every direction and a heightened probability of its being unseen, this is where the risk of collision is greatest. Also, if unseen traffic exists, there’s at least a fifty-fifty chance that YOU’RE IT! Failure to see traffic further out, opposite your final turn, means they’re now behind you on final – and you can only hope they’re not inching closer each moment. You’ll never know until…

Any self-respecting pilot wants to make spot landings, and any skilled pilot can… but only if they try. Learning to land accurately at a predetermined point is important, but over-control is not the way to do it. Steeper approaches are easier to judge than flatter ones, especially when a precise touchdown point is important. Of course a very flat approach is just bad strategy and a very steep approach (without flaps) makes stopping short nearly impossible.

Some pilots make awkward, long landings because they unlock the spoilers but don’t open them far enough to significantly steepen their approach. When you’re deploying spoilers for real, glance briefly at one wing to confirm how far they’re extended.

There is great temptation to micro-adjust on final approach, but that distorts judgment of the glide. Small atmospheric irregularities tend to average out if flown through with steady hands, but they seem to worsen when we jockey the controls. Some correction with spoilers may become necessary, but try to minimize large alterations of glide slope. As you near the ground it becomes more important to be steady, steady, STEADY, particularly in higher performance craft. Most runways provide ample room to touch down either short or long by hundreds of feet, so take it easy and let gravity do the work!

Okay, so what about crosswind landings? We’ll discuss them next time.