Mechanics of flight

Learning the art of catching thermals and understanding wind flow/direction, the use of rudder to control yaw, air speed,  increasing lift increases drag, fundamentals of flight.
The difference in pressure between the top and bottom surfaces results in the force we call lift. Aerodynamics divide the force produced by a glider's wings into two parts.  They call these “Lift” and “Drag”. Lift: The aerodynamic force produced by the wings perpendicular (at right angles) to the on coming airflow.  (beneficial) Drag: The aerodynamic force exerted on the wings parallel (in line) with the oncoming airflow.

RC DLG Slope Gliders

Ultralight handmade DLG HLG slope soaring radio controlled RC gliders

What is the purpose of lift? It is to hold an airplane up in the air by countering the effects of weight (gravity). The simple fundamentals of weight (W = mg) for officiant flight has been lost and overlooked in today’s model gliders and airplanes. The weight of an airplane plays a crucial role not only when it comes to the thrill factor of soaring but something as basic as fight time and thermal lift.  Most models are manufactured using molded EPO foam, which is extremely durable but at a cost, its mass.

Keeping the weight of RC gliders as low as possible gives the pilot the flexibility to virtually fly/glide in any given weather/landscape conditions. A glider with the least amount of weight has the potential to gain altitude with ease, a gliders dream.

Flight of theFireFly a 33.5" wingspan soaring rc glider.  Use any small 2-4 channel receiver. At 80+- grams and 33.5" wingspan, this here FireFly is the "floatiest" glider but yet aggressive. An hour of flight on a single 300mAh rechargeable battery.

Removable wing/tail using two nylon screws for easy carry. Pod is structurally stiffened with carbon fiberglass tow and epoxy. Magnetic hatch

DLG Glider Specs

  • 2x high/tau MG digital micro servos
  • 1S 300mAh lipo battery + plug
  • required: 2-5 channel micro receiver (spektrum, JR, futaba, FrSky, TARANIS, Turnigy, etc.)

RC Glider Specifications

  • wingspan: 33.5" (
  • length: 14" (431mm)
  • wing area: 203.8
  • wing loading: 2.61 oz./sq.ft.
  • flying weight: 3.2oz/91grams
  • airfoil: modified PW1211-PW98 w/2° washout


Click here to visit our Youtube channel for more video footage of our DLG and Slope Gliders.

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