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Acronyms
| @ | | short form for “at” in internet addresses- or “for” in sales Example 3 @ $5.00 – 3 for $5.00
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| & | | This is an ampersand and means “and per say and” can be used to replace “and” in a sentence
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| # | | After a number means pounds Ex. 5# is five pounds. Before a number means number Ex. #5 means number 5. On a telephone it is referred to as the “pound sign”.
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| / | | Can be used to replace “or”. Example: “in/out” means “in or out”
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| A | | In electrical formulae this is short for Amp- a measurement of current. It takes 1000 milliamps to make one amp. The symbol for amp in electrical formulae is “I”. Example: I=E/R (that is: Amps = Volts divided by Resistance in Ohms). Also see other symbols E-R- and P.
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| AAC | | Aluminum- Aluminum and Chrome
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| ABC | | Aluminum- Brass and Chrome- or Aero Bird Challenger
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| ABL | | Advanced Bimetallic Liner (in our engines- bimetallic is typically brass and nickel)
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| ABN | | Aluminum- Brass and Nickel
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| ABS | | Anti-lock Braking System
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| AC | | Alternating Current- or Aerodynamic Center (of the wing)
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| ACT | | Test to do before flying A=antenna (up)- C=controls (proper directions)- T=throttle (quick runup and idle)
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| AFAICT | | As Far As I Can Tell
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| AFR | | Adjustable Function Rate- used to adjust servo end points
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| AFS | | Active Flight Stabilization system
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| Aft | | Back of boat- plane etc.
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| Ailerons | | Control surfaces at back of wing. Note: When standing at back of plane looking forward- and the right aileron moves up- and left goes down- plane banks to right
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| Airfoil | | The curvature on a flying surface (wing- propeller etc.) that creates a lift or pull.
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| Analogue | | In test equipment a meter with a dial (needle) read out. In RC a mechanical change caused by voltage fluctuation. Example: electrical motor control output to the motor.
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| Angle of Attack | | The difference between a surface going flat into the wind- and going into the wind at an angle.
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| Anhedral | | Wings droop down- the opposite of dihedral
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| AOT | | Short for “as opposed to”
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| Angle of Incidence | | See incidence
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| APG | | Aileron Positioning Guide
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| Attachment | | A file attached to an email
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| ATRF | | Almost Ready To Fly a model that is mostly pre-assembled - see also Scratch Built- Kit Built- Plan Built- ARF and RTF
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| ATV | | Adjustable Travel Volume- limits servo travel distance either side of center- or All Terrain Vehicle. See EPA also.
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| AM | | Amplitude Modulation- an alternative transmission method to FM- not used very much
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| AMA | | American Modeler’s Association- Academy of Model Aeronautics
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| AR | | Aspect Ratio- relationship between the wing span and the wing chord
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| ARF or ARTF | | Almost Ready to Fly
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| ARC | | Almost Ready to Cover
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| AUW | | All Up Weight (total weight ready to fly. some include fuel- some don't... should include fuel though.)
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| AWARF | | All Wood Almost Ready-to-Fly
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| AWOL | | Absent Without Leave
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| BA | | British Association Thread designation
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| Bash or bashing | | To change or modify a model. Also- may mean to speak negatively about a thing or person.
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| BBS | | Bulletin Board System
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| BC or B/C | | In emails- short for “because”
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| bcnu | | In emails short for “Be Seein’ You”
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| BEC | | Battery Eliminator Circuit
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| Bevel | | To shape material to make an angle. Example: The front of ailerons where the hinge goes in are beveled (angled) to allow the aileron to pivot up and down at the hinge point without hitting the wing.
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| BF | | Short for “before” or Bayerische Flugzeugwerke Bavarian Aircraft Works - Willy Messerschmitt's company and makers of the Messerschmit ME109
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| bfn | | Short for “bye for now”
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| BL | | Brushless- refers to electric motors
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| Blog | | Stands for weblog. This is a personal newsletter- or point of view- updated regularly and available to any web surfer
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| BMEP | | Break Mean Effective Pressure
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| BMFA | | British Model Flying Association
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| BOB | | Best On Board (passenger) or Bomb On Board
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| Browser | | Software used to access the internet
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| BS | | Bull Stuff (or substitute “stuff” with your locally used word)
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| BTE | | Bruce Tharpe Engineering
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| btt | | Back To the Top- used to direct reader to the top of a forum or tell them to start over
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| BUHOR | | Big Ugly Hell On Rails
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| BUMP | | Any sort of text response to get the message to the top of a forum or active again
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| BYOB | | Bring Your Own (pick one) Bottle/Broad/Booze/Bedroll/Blanket/etc.
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| C(number) | | Capacity times the number. Example C10 is ten times the capacity of a battery in ma. C10 for a 3000 ma (3.0 amp) battery pack would be 30-000 ma- or 30.0 amps.
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| C/(number) | | Capacity divided by number. Usually used to describe battery charge rates. Example C/10 is the battery capacity in ma divided by 10. In the case of a 3000 ma (3.0 amp) pack this would be 300 ma
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| C/W | | Short for “complete with”
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| CA | | Cyanoacrylate Adhesive (a quick setting glue)
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| CAD | | Computer Aided Design
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| CAM | | Computer Aided Manufacturing
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| Carb | | Short for carburetor
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| CCPM | | Cyclic Collective Pitch Mixing- a mixing of three servos to control helicopter
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| CDMA | | Code Division Multiple Access- used with cell phones
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| CG | | Center of Gravity or Carl Goldberg (Models)
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| Charge or Charging | | To replenish or fill. In modeling- to put energy into batteries.
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| CIM | | Computer Integrated Manufacturing
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| Clevis | | A clip on connector between a control (push) rod and servo- control horn or throttle.
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| cm | | Short for centimeter. In emails its short for “call me”
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| Cockpit | | The area a pilot sits to control an aircraft.
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| Control Surface | | A surface that controls wind deflection for controlling movement- such as- aileron- elevator- rudder flaps etc.
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| Cos or cus | | Short form for “because”
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| CP | | Center of Pressure- or Coroplast (it’s like a plastic cardboard they make signs out of)
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| CRAFT | | Can't Remember A Frigging Thing (or substitute “frigging” with your own locally used words)
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| CR or C/R | | Compression Ratio
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| Crank | | Short for the “crank shaft” of an engine.
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| CRATT | | Coded Radio Airborne TeleType
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| CRS | | Can’t Remember Stuff (or substitute “stuff” with your locally used word)
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| Crow | | When flaps go down and ailerons go up- gliders usually use this as an air brake
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| Current | | The moving of electrons through an electrical device. Designated as I one unit is A (ampere)
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| cw2cu | | Short for “can’t wait to see you”
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| CYA | | Cover Your Aft (substitute “Aft” with your locally used)
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| DAW | | Dave's Aircraft Works (bought out by http://skykingrcproducts.com/ )
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| DC | | In electricity - Direct Current- or when referring to Radio Control radio receivers – Dual Conversion
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| Dead Stick | | Motor stopped and flying (gliding) without power
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| DGA | | Damn Good Airplane (or Aircraft)
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| Dialed in | | The model is perfectly tuned
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| Diameter | | In regards to propellers- the distance from tip to tip of a propeller
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| Digital | | In RC- a change related to pulse width- example servo movement- the longer the pulse the more movement. In everyday life a display that has numbers or can be read.
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| Dihedral | | Wings that angle upwards from the body of the plane (wing root) to wing tip. Looking at the wing from the front of the plane- it would look like a flattened “V”
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| Dive Brake | | Surfaces on a wing to create a drag to slow airspeed when deployed.
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| Dope | | A type of paint used while covering aircraft- there are two types Nitrate (not fuel proof) and Butyrate (fuel proof). Nitrate dope can paint over Butyrate dope- but Butyrate can not cover over Nitrate.
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| DR or D/R | | Dual Rate- usually a switch on the transmitter to allow longer/shorter servo travel
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| DRRC | | Driving Radio Control Canada magazine
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| DSC | | Direct Servo Control- control of servos by a cord from transmitter without transmitting a signal
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| DSQ. | | . Disqualified or disqualification
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| Dynamic Soaring | | Using the up and downdrafts of a slope to build speed with a glider.
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| E | | Electrical symbol for voltage. Example formula: E=IR (that is: Volts = Amps divided by Resistance in Ohms). Also see other symbols I-R-A- and P.
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| EBT | | Earnings Before Taxes
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| ECM | | Electronic Counter Measures
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| EFI | | Electronic Fuel Injection
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| EGT | | Exhaust Gas Temperature
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| Elevator | | Horizontal control surface at back of plane. Note: When back of elevator goes up- plane goes up.
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| Elevons | | When aileron and elevator functions are combined. Example - delta wing aircraft
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| EMAS | | Engineered Materials Arresting System- barriers to slow down vehicles
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| EMC | | Electromagnetic Compliant
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| Energy | | Designated as E and is the result of Power times Time usually expressed in Joules(j) or kilowatt Hours(kWh)
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| EPA | | End Point Adjustment. See ATV also.
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| EPP | | Enhanced Poly Propylene
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| E Props | | Electric Propellers- used on electric planes blades are not as wide- and hubs are larger than SF Props. Usually used on outdoor electric planes.
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| ETA | | Estimated Time of Arrival
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| E-TOC | | Electric Tournament of Champions
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| ESC | | Electric Speed Control
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| Expo | | Short for expotential- in Radio Control it is the ratio of the transmitter stick movement to the servo movement. Typically more stick movement- for small servo movement thus finer control
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| FADEC | | Full Authority Digital Engine Control
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| FAI | | Fédération Aéronautique Internationale
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| FAQ | | Frequently Asked Questions
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| FCC | | Federal Communication Commission
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| FFL | | French Foreign Legion
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| FIDO | | Forget It- Drive On (or substitute “forget” with your locally used word
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| Fin | | The vertical stabilizer- that is- the tall- thin- upright nonmoving part of an aircraft’s the tail assembly.
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| Flame | | To insult or vent disapproval
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| Flaperons | | Ailerons that can be used both as ailerons and/or flaps
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| Flight Simulator | | In radio control- a program used on a personal computer to simulate flying a model aircraft with joysticks or a radio control transmitter.
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| Flute | | The veins in coroplast (the plastic cardboard) that is used in making SPAD model aircraft
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| FM | | Frequency Modulation- most common method of transmission used today for Radio Control
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| FMS | | Flight Management System
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| FNV | | Front Needle Valve- usually high speed adjustment when located on carburettor
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| FOAD | | Fly Off and Die. (Substitute “Fly” with locally used words)
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| FOD | | Foreign Object Damage or Foreign Object Debris
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| FOS | | Full Of Stuff (Substitute “Stuff” with locally used words)
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| Forward | | to the front of boat- plane etc.
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| FRED | | Friggen Ridiculous Electronic Device (Substitute “Friggen” with locally used words)- also means Flashing Rear End Device on trains.
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| Frequency | | The amount of repetitions in a specific amount of time. Designated as f- one unit in electricity is Hz (hertz)
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| FRRC | | Flying radio Control Canada magazine
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| FS | | For Sale or Fail Safe- usually a preset position for servos to move to when radio transmission is lost
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| FSK | | Freqency shift keying
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| FUBAR | | Fouled Up Beyond All Recognition (Substitute Fouled with locally used words)
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| Fuselage | | The main body of an aircraft
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| G | | Gravity force factor. Example 1G = normal weight- 2G = two times weight
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| g2g | | Short for “got to go”
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| Gas | | short for “gasoline”- example a fuel for automobiles
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| GG | | Gotta Go or Gorilla Glue (a polyurethane glue- another common brand name is Elmer’s Pro Bond)
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| Glow Plug | | A screw in plug- usually at the top of a glow engine- with a platinum coil that requires heat to ignite alcohol to start the combustion process- once started- the heat from subsequent combustion keeps the coil hot and the engine working.
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| Glow Engine | | An engine that relies a glow element to operate.
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| GMS | | Gemtec Machinery Systems (makers of GMS engines)
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| Gopher | | short for “go for”- or a menu driven system to get information
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| GPS | | Global Positioning System- an electronic system to find a location or position
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| gyab | | Give Yourself A Break
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| HDG | | Heading as in runway approach heading
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| Hertz | | A unit of frequency defined as one cycle per second
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| HIS | | Horizontal Situation Indicator
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| Hover | | To suspended an object in one place using an internal or external power source.
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| Hotliner | | A high speed electric assisted glider
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| HS | | High Speed or Hobby Shop
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| HSN | | High Speed Needle- high speed adjustment on a carburetor
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| HTML | | Hyper Text Mark-up Language
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| Hydro | | short for electricity- or in SCUBA compressed air tanks (used for starting jets )short for Hydrostatic testing and must be done every 5 years
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| I | | Current in amps (Example formula: I=E/R)
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| IFF | | Identification Friend or Foe
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| IFR | | Instrument Flight Rules
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| IIRC | | If I Recall Correctly
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| ILS | | Instrument Landing System
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| IMAC | | International Miniature Aerobatic Club
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| IMHO | | In My Humble Opinion or In My Honest Opinion
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| IMNSHO | | In My Not So Humble Opinion
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| In The Bones | | A plane that has been build and framework completed- but is not covered yet
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| Incidence | | The difference in between a surface (wing) being parallel to the center line of the aircraft and a wing offset from the center line. If the front of the wing is up- its positive- if down its negative.
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| IPR | | Intelligent Power Reduce
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| IRCHA | | International Radio Controlled Helicopter Association
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| ISP | | Internet Service Provider
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| JMHO | | Just My Humble Opinion or Just My Honest Opinion
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| J | | Joule- a unit of work/energy
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| JIT | | Just In Time- usually to receive parts just in time for manufacturing- thus reducing inventory
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| Joule | | The work done when the force of 1 newton goes 1 meter
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| JSF | | Joint Strike Fighter (F35)
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| Kb | | Voltage constant (Volt/1000rpm)
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| KISS | | Keep It Simple Stupid
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| Knife Edge | | To fly a model “on its side”- the wings are vertical to the ground instead of horizontal
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| Kt | | Torque constant (oz-In/A)
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| Kv | | Kilovolt or 1-000 volts. With electric aircraft motor specifications Kv means 1-000 RPM (revolutions per minute) per volt
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| kWh or kW-hr | | Kilowatt Hours a measurement of how many thousands of watts used per hour
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| Lawn Dart | | A model aircraft with its nose buried in the ground- or a model airplane fuselage that lost its wings mid flight.
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| LSI | | Large Scale Integration
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| Kit Built | | To build a model from a kit see also Scratch Built- Plan Built- ARF- ARTF and RTF
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| LCA | | Landing Craft- Assault
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| LCD | | Liquid Crystal Display
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| LCI | | Landing Craft- Infantry
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| LH | | Left hand side (in reference to ships and airplanes - left hand side of pilot facing forward)
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| LiPo- or Li-Po- or Li-Poly | | Lithium Polymer battery
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| Li-ion | | Lithium Ion Battery
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| LMFAO | | Laughing My “Freaking” “Aft” Off- (substitute freaking and aft for locally used words”
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| LOA | | Length Over All- in model aircraft usually measured from tip of nose cone to end of rudder
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| LOL | | Lots Of Laughs- or Laugh Out Loud- or Lots Of Luck
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| Low Wing | | An aircraft with the wing on the lower part of the fuselage.
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| Loop | | An inside loop is a maneuver where an aircraft goes into a vertical circle using up elevator (an outside loop uses down elevator).
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| LSN | | Low Speed Needle- low speed needle valve adjustment on a carburetor- usually affects low and intermediate speed (transition) adjustment
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| Lurker | | A person who visits- and reads- bulletin boards and forums but never posts anything
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| LVC | | Low Voltage Cutoff circuit
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| ma | | Milliamp- one thousands of an amp
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| MAAC | | Model Aeronautics Association of Canada
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| MAC | | Mean Aerodynamic Chord (I think this is the center of gravity/balance point?)
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| mah | | Milliamps per hour- milliamps times hours- one thousands of an amp. Milliamps is a current rating used to determine the number of milliamps used- or stored- for one hour
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| MASH | | Mobile Army Surgical Hospital
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| mbrsd | | Short for “embarrassed”
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| MCP | | Mousse Can Pipes (mufflers made from hair styling mousse cans)
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| MD | | Stamped on side of K&B engine – means Model Direct- a direct sales promotion engine sold in late 90’s
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| ME | | Short for Messerschmit the ME-109 was designed by Willy Messerschmitt
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| MECOA | | The Model Engine Company of America
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| MK | | Monokote or Mark (as in Mark II)
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