What really happens in the Nordic combined jump: the phases, why the take-off decides everything and why combined athletes jump shorter than specialists.
**First, the most important sentence in this guide: here you learn to understand the jump, not to copy it.** Ski jumping is a high-risk sport that is learned exclusively under supervision on inspected hills — understanding and execution are two separate things, and this text delivers only the first.
The short technical answer: the jump is decided at take-off. The phases are in-run, take-off, transition into flight, flight, landing preparation and landing — and take-off plus transition count as the most important, because they set the initial conditions of the entire flight curve [1].
And the question everyone asks: why do combined athletes jump shorter than pure ski jumpers? Because they are heavier and take off more slowly. Compared with pure jumpers, combined athletes carry around 9 percent more body mass and reach about 17 percent less vertical velocity in jump imitation [3]. That is not a technical deficit but the price of the 10 kilometres still to come.
The jumper sits low and as aerodynamically as possible in the track. Goal: maximum speed at the take-off table with a completely quiet upper body. Nothing is won here, but a lot can be lost.
On the table the jumper has to solve five largely independent tasks at once: take-off energy, aerodynamics, accuracy, optimal angular momentum and arm movement [1]. Too much angular momentum and he tips forward; too little and he never reaches flight position.
This is where the height of the flight curve and the preservation of horizontal velocity are decided [1]. The V-style, introduced in 1985 by the Swede Jan Bokloev, generates around 30 percent more lift here than the old parallel ski position [2].
In flight the body works like a wing. The best lift-to-drag ratio sits at an angle of attack of roughly 25 to 30 degrees [2] — angled shallowly into the airflow, much like a hand held slightly tilted out of a car window.
Finally one leg is placed ahead of the other. The telemark landing allows the flight position to be held longer and is expected by the style judges [1]. It is also the moment when the most can go wrong [5].
This guide deliberately contains no jumping instructions. It explains phases and physics so you can see what you are looking at — nothing more. This page explains and motivates, it never replaces supervised training on the hill with a club and a qualified coach.
The path is always the same and never to be shortened: dry-land drills, then the smallest or plastic-matted hill, then larger hills — each step only after sign-off. The reason is in the numbers: the crash landing is the most common injury mechanism on the hill, the knee the most common injury site, and joint and ligament injuries account for roughly 45 to 49 percent of all ski jumping injuries [5].
Ski jumping is non-contact [5] — the risk comes out of your own execution. Which is exactly why supervision is not a formality but the safety mechanism of this sport.
Watch jumps once looking only at the take-off table, with the pause button. Ignore distance and landing. Pay attention only to whether the jumper is still calm at the moment of lift-off or already rotating.
Almost everything that looks spectacular afterwards was decided in that tenth of a second. Learn to read the take-off and you see the distance coming before the jumper has cleared the table — which is what makes this sport genuinely interesting to watch.
In six phases: in-run, take-off, transition into flight, flight, landing preparation and landing [1]. Take-off and transition are decisive because they set the flight curve; five tasks have to be solved simultaneously there — take-off energy, aerodynamics, accuracy, angular momentum and arm movement [1].
Because they are built for the cross-country race. Compared with pure jumpers they carry around 9 percent more body mass and reach about 17 percent less vertical velocity in jump imitation [3]. Since vertical velocity and mass together explain roughly 70 percent of jumping performance [4], the shorter distance is by design.
Considerably more lift. The V position introduced by Jan Bokloev in 1985 produces around 30 percent more lift than the earlier parallel ski position [2]. Combined with an angle of attack of roughly 25 to 30 degrees, this gives the best lift-to-drag ratio [2].
It is not a formal requirement, but the style judges expect it and it allows the flight position to be held longer [1]. Practically it also distributes the landing forces across two offset legs — and the landing is the moment when most injuries occur [5].
No, and that is not politeness. The crash landing is the most common injury mechanism on the hill and the knee the most common injury site [5]. Understanding you can get here; execution happens exclusively in a club, in strict progression and under supervision.
Adding the Second Half: What Changes When a Jumper or Skier Becomes a Combined Athlete