In radio-controlled aircraft
is a term used to describe a fast sailplane
with an electric motor
. The range of what is often described as a hotliner varies from a sailplane with ailerons
to 3000 watt
planes. General characteristics of a hotliner are:
- Sailplane with at least aileron and elevator control
- Electric motor
- Ability to climb at an angle of 70 degrees or more, usually vertical climbs.
Hotliners have been around since the early 1990s and became popular almost a decade later.
Hans-Dieter Levin first proposed this term in his test of the Aeronaut Sinus
in a German magazine
. Originally, it was an electric sailplane with remotely controlled ailerons, capable of flying faster than the models of the period which only had rudder
and elevator controls. Levin tested his Sinus
with a Speed 600 motor and an 8x4.5?(diameter(inches)/pitch(incher per revolution)
) prop and a 7 cell NiCad
battery pack. In this configuration a climb at more than 70° was not possible. However, the term, hotliner, has since evolved to mean models with a fast climb rate. Aileron-equipped electric models which are not so fast are called warmliners
Typically hotliners are launched at full throttle and reach a high altitude. From here the pilot cuts the motor and starts a series of maneuvers.
Video of a Hotliner
Bandit Hotliner doing high speed dives