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RCUniverse Glossary





Total Words: 412
Words Found in Search: 17
Viewing Records: 1 - 17
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WordDefinition
HAKE (3D Trick)
HAKE = High Angle (of attack) Knife Edge. It is a slow moving Knife edge trick.


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Added by: MOJO65-9or10
Harrier
A flight maneuver that places the aircraft into a High Alpha Condition where the wing is aerodynamically stalled and lift is maintained by means of excess power.

Control authority is primarily maintained by the down wash of air over the flight controls. In this flight condition the plane is maneuvered around at slow speeds and appears to "hang" on the propeller.

Because the airplane appears to "hover" it is likened to the harrier jet...a fixed wing aircraft capable of vertical take off and landing.


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See also: AOA | Angle of Attack | 3D Added by: Leardriver
HDA
High Dollar ARF/ARC, this is another definition of any plane that comes from the manufacturer either partially completed to fully ready to fly.


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Added by: Ram-bro
Head Speed
The rotational speed of a helicopters rotor head, measured in RPM.


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Added by: deves
Header
the header is the short piece of tube that starts at the exhaust port and connects to the muffler.


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Added by: superrod
Heat
Also called a Qualifier.

Heats are a race or races to decide where drivers are ranked for the feature races of the event, which are called Mains.


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Added by: gerwen
Hinges
The devices that is used to connect moving flight surfaces to their non-moving counterparts (e.g. the connection between an elevator and a stabilizer).


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Added by: larrypaul
Hit
An RC term used in reference to a momentary or sustained radio interference between transmitter and receiver. Commonly used in the phrase "I got hit" meaning a loss of control of the aircraft because of radio interference. Some pilots tend to use the phrase "I got hit" to cover what is more commonly known as pilot error.


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Added by: BlackCloud
Horizontal Stabilizer
Located at the rear of an airplane or helicopter fuselage, this planar surface serves to keep the airplane stable on its pitch axis.


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See also: Pitch Axis Added by: mkranitz
Horn
A piece of hardware attached to a control as a lever point to receive control positioning from a pushrod or cable.


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Added by: grotto2
Horsepower
The ability for your motor to get the vehicle up to top speed. Unlike torque which is the get up and go power from a dead stop. Horsepower can be thought of as work done in a minute 33000 ft. lbs / 1 minute


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Added by: chadchm8
House thermal
The always there, always reliable thermal, that always seems to be found in the same region of sky at the club field, that all the locals know about and use to their overwhelming advantage in contests for beating the out-of-towners.


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Added by: dgliderguy
HSN
High speed needle. This needle found on nitro engines controls the maximum amount of fuel that can enter the engine at ANY throttle opening. It also serves to adjust the fuel/air mixture from part throttle to full throttle. In vehicles, proper adjustment of this needle will allow an engine to attain maximum rpm and horsepower without causing a lean condition. Adjustment of this needle should be done BEFORE adjusting the low speed needle.


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See also: Lean Mixture | LSN | Low End Needle Valve Added by: Nitronutt
Hub Carrier
The parts of the suspension system that hold the axles and bearings on which the whiles of the vehicle rotate. Also called "uprights".


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Added by: mkranitz
Huck it!
To throw down in some way in front of your bros, it usually involves flying out of your "comfort zone". Possible uses: "He hucked it on the deck", meaning "He did an extremely low torque roll".


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See also: DOD Added by: marcv
Hull
The main body of a boat or ship that keeps it afloat.

A displacement hull is designed to remain fully in the water throughout its entire range of speed.

A planing hull is most efficient once it reaches enough speed to climb out of its bow wave and plane on top of the water's surface.


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See also: Plane Added by: dauntlessfan
Hydro Lock
Phenomenom common to internal combustion engines, where the Air/Fuel mixture is too rich (e.g. too much fuel) and the unburned fuel is trapped between the cylinder head and the piston, causing the engine mechanism to lock due to excessive hydrolic pressure.

Common fix: remove glow plug, disconnect fuel line and crank engine using a starter or ratchet. Trying to run or start a flooded engine may cause permanent damage.


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See also: Lean Mixture | Rich Mixture Added by: FalconWings
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