E-flite UMX Whipit DLG BNF Basic EFLU3150 数据表

9

Consult local laws and ordinances before choosing 
a location to fl y your aircraft. 

We recommend fl ying your aircraft outside in calm 
conditions. Always avoid fl ying near houses, trees, 
wires and buildings. You should also be careful to 
avoid fl ying in areas where there are many people, 
such as busy parks, schoolyards or soccer fi elds. 
For additional tips on fl ying, refer to the product 
page at horizonhobby.com.

When hand-launching your aircraft alone, hold the 
aircraft in one hand and the transmitter in the other. 

For fi rst fl ights, glide to check the trim. Hold the 
aircraft on the underside and throw the aircraft 
directly into the wind, angled slightly up (5 to 
10 degrees above the horizon). Once the trim is 
adjusted, begin exploring the fl ight envelope of 
the aircraft.

This aircraft may be launched side-arm, with or 
without a full 360-degree discus launch. The aircraft 
may be launched right- or left-handed. Grip the 
wing with the end of the carbon rod between thumb 
and forefi nger. Avoid twisting your wrist and try to 
keep your arm straight when launching.

Tip: In a computerized transmitter, program a mix 
of elevator and/or rudder with launch fl ight mode 
to get straight hand launches with your launching 
style. Start with a 5% mix, then adjust upwards to 
get to desired results. 

Your aircraft can ascend on thermals and other 
updrafts to prolong its fl ight. There are many ways 
to stay aloft with a sailplane, such as ridge lifts and 
thermals. A thermal is simply a column of rising 
warm air. Once you get your aircraft into the air, 
watch your aircraft for a response to thermals.

If the airplane randomly rolls on its own, it is likely 
that you only fl ew through the edge of the thermal, 

causing one side of the airplane to rise, rather than 
the entire airplane. Enter the thermal by turning 
your aircraft directly into it, circling to stay in the 
center of the thermal. Slow your forward speed by 
increasing up elevator trim so that your aircraft is 
moving just faster than stall (minimum sink speed). 
Make easy banking turns to fi nd the area of highest 
lift (the thermal’s core).

When you fi nd the core of lift, tighten your turns to 
stay near this position. Sometimes thermals drift 
downwind. It is best that you search for thermals 
upwind, so that you can follow a thermal downwind 
if it is pushed downwind.

With practice, you will fi nd it easier to locate and 
anticipate the movement of thermals. Although 
thermals cannot be seen, you can see dust, insects 
or birds riding an updraft. Air movement of a 
thermal may be felt, so movement in an otherwise 
calm spot may show you the location of a nearby 
thermal. A shift in the wind (in a light breeze) can be 
airfl ow into a thermal.

Make sure to land into the wind. Due to the high 
lifting effi ciency of the sailplane design, landing 
requires a large landing area. While on your 
downwind leg, remember that the sailplane glides 
much better than other aircraft. You will need to 
setup for landing lower and with a more shallow 
descent than you may be used to. As you are 
on approach for landing, ensure that the model 
is descending slowly, but also not accelerating. 
Maintain this descent and speed, and, as the model 
nears the ground (approximately 6 inches (15 cm)), 
slowly apply a small amount of up elevator. 

NOTICE: Crash damage is not covered under the 
warranty.

Repair the aircraft using foam-compatible CA 
(cyanoacrylate adhesive) or clear tape. Only use 
foam-compatible CA, as other types of glue can 
damage the foam. When parts are not repairable, 
see the Replacement Parts List for ordering by 
item number.

For a listing of all replacement and optional parts, 
refer to the list at the end of this manual.

NOTICE: When you are fi nished fl ying, never leave 
the aircraft in direct sunlight or in a hot, enclosed 
area such as a car. Doing so can damage the foam.