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Reality Theory: Engineering & Control Theory edit
- 3D printing
- 3D printing processes
- 5 Whys
- Absorption refrigerator
- Abutment
- AC motor
- AC power plugs and sockets
- AC-to-AC converter
- ACARS
- Accelerometer
- Acceptance sampling
- Access management
- Accessory drive
- Acre
- Action (firearms)
- Active cooling
- Active fire protection
- Active protection system
- Active radar homing
- Active redundancy
- Actuator
- Adaptive control
- Adjustable-speed drive
- Aerial bomb
- Aerial lift
- Aerial refueling
- Aerial tramway
- Aerodrome
- Aerodynamic heating
- Aeronautics
- Aerospace engineering
- Aerostat
- Afterburner
- Aileron
- Air barrier
- Air brake (aeronautics)
- Air compressor
- Air conditioning
- Air filter
- Air gun
- Air handler
- Air launch
- Air mass (solar energy)
- Air pump
- Air raid shelter
- Air source heat pumps
- Air traffic control
- Air-to-air missile
- Air-to-surface missile
- Airbag
- Airborne collision avoidance system
- Airborne early warning and control
- Airbreathing jet engine
- Airbus A320 family
- Airbus A330
- Airbus A380
- Aircraft
- Aircraft cabin
- Aircraft carrier
- Aircraft design process
- Aircraft engine
- Aircraft flight control system
- Aircraft maintenance
- Aircraft pilot
- Aircraft principal axes
- Aircraft registration
- Aircrew
- Airflow
- Airfoil
- Airframe
- Airlock
- Airport
- Airport terminal
- Airship
- Airspeed
- Airspeed indicator
- Airway (aviation)
- Air–fuel ratio
- AK-47
- Alcohol fuel
- Alkaline battery
- All-terrain vehicle
- Alley
- Alternative fuel vehicle
- Alternator
- Alternator (automotive)
- Altimeter
- Ammunition
- Amphibious aircraft
- Anchor
- Angkor Wat
- Anti-aircraft warfare
- Anti-ship missile
- Anti-tank guided missile
- Antifreeze
- Anvil
- Aquaplaning
- Arc flash
- Arc lamp
- Arc welding
- Arch
- Arch bridge
- Arch dam
- Architect
- Architectural acoustics
- Architectural drawing
- Architectural engineering
- Architectural lighting design
- Architectural plan
- Armature (electrical)
- Armor-piercing bullet
- Armor-piercing shell
- Armored car (military)
- Armored car (valuables)
- Armoured fighting vehicle
- Arquebus
- Arrow
- Arrowhead
- Arterial road
- Articulated bus
- Articulated robot
- Artificial sunlight
- Artillery
- ASIMO
- Aspect ratio (aeronautics)
- Assault rifle
- Assembly line
- Assisted take-off
- Atrium (architecture)
- Attack aircraft
- Attic
- Autocannon
- Autogas
- Autogyro
- Automated guided vehicle
- Automatic dependent surveillance – broadcast
- Automatic door
- Automatic firearm
- Automatic identification system
- Automatic meter reading
- Automatic number-plate recognition
- Automatic transmission
- Automatic vehicle location
- Automation
- Automobile handling
- Automobile repair shop
- Automobile safety
- Automotive battery
- Automotive design
- Automotive electronics
- Automotive engine
- Automotive engineering
- Autonomous car
- Autonomous cruise control system
- Autonomous robot
- Autonomous underwater vehicle
- Autopilot
- Autorotation
- Autothrottle
- Availability
- Availability factor
- Avenue (landscape)
- Aviation
- Aviation accidents and incidents
- Aviation fuel
- Aviation safety
- Avionics
- Axial-flow pump
- Axle
- Azimuth thruster
- Baby transport
- Back-fire
- Backdraft
- Backhoe
- Backstepping
- Balcony
- Ball bearing
- Ballast
- Ballast tank
- Ballistics
- Balloon (aeronautics)
- Baluster
- Bang–bang control
- Bank vault
- Banked turn
- Barbecue grill
- Barbed tape
- Barbed wire
- Barge
- Barricade
- Base load
- Basement
- Bastion
- Bastion fort
- Bathroom
- Bathtub
- Baton (law enforcement)
- Battering ram
- Battery charger
- Battery electric vehicle
- Battle axe
- Battleship
- Bayonet
- Beam (structure)
- Beam bridge
- Bearing (mechanical)
- Bed
- Bedroom
- Bellows
- Belt (firearms)
- Belt (mechanical)
- Bench (furniture)
- Bending
- Bending (metalworking)
- Bending moment
- Bermuda rig
- Bicycle
- Bicycle and motorcycle dynamics
- Bicycle chain
- Bicycle drivetrain systems
- Bicycle frame
- Bicycle handlebar
- Bicycle pedal
- Bioenergy
- Biofuel
- Biomass
- Biplane
- Bituminous waterproofing
- Black ice
- Black start
- Blade
- Blade pitch
- Blanking and piercing
- Blended wing body
- Blender
- Blow molding
- Blowgun
- Blowtorch
- Blueprint
- Boardwalk
- Boat
- Boat building
- Boathouse
- Boeing 737
- Boeing 747
- Boeing 777
- Boeing 787 Dreamliner
- Boeing B-52 Stratofortress
- Boiler
- Boiler (power generation)
- Boiler explosion
- Boiling water reactor
- Bollard
- Bolt action
- Bomb
- Bomb disposal
- Bomb shelter
- Bombard (weapon)
- Bomber
- Booby trap
- Boosted fission weapon
- Bore (engine)
- Boring (manufacturing)
- Boundary representation
- Bow and arrow
- Bow saw
- Bow shape
- Bowstring
- Box truck
- Brake
- Brazier
- Brazing
- Breakdown (vehicle)
- Breechloader
- Breeder reactor
- Brickwork
- Bridge
- Bridge (nautical)
- Brig
- Brigantine
- Broom
- Brownout (electricity)
- Brush
- Brushed DC electric motor
- Brushless DC electric motor
- Bucket
- Building
- Building automation
- Building code
- Building envelope
- Building implosion
- Building insulation
- Building science
- Built environment
- Bulk carrier
- Bulk material handling
- Bulkhead (partition)
- Bulldozer
- Bullet
- Bungalow
- Bunker
- Bunker buster
- Buoyancy compensator (aviation)
- Burj Khalifa
- Bus
- Bus station
- Bus stop
- Busbar
- Business jet
- Buttress
- Cab (locomotive)
- Cabin (ship)
- Cabin pressurization
- Cabinetry
- Cable layer
- Cable transport
- Cable-stayed bridge
- Caliber
- Calipers
- Cam
- Camber (aerodynamics)
- Camp bed
- Candle
- Cannon
- Canoe
- Cant (road/rail)
- Cantilever
- Cantilever bridge
- Capacity factor
- Caplock mechanism
- Capsizing
- Car
- Car alarm
- Car body configurations
- Car body style
- Car classification
- Car controls
- Car crusher
- Car layout
- Car platform
- Car suspension
- Car wash
- Caravan (towed trailer)
- Caravel
- Carbine
- Carburetor
- Cargo ship
- Carpentry
- Carrack
- Carriage
- Carriageway
- Cart
- Cartridge (firearms)
- Carvel (boat building)
- Cascading failure
- Caster
- Casting
- Casting (metalworking)
- Castle
- Catalytic converter
- Catamaran
- Catapult
- Causeway
- Ceiling
- Central heating
- Centre stick
- Centrifugal fan
- Centrifugal governor
- Centrifugal pump
- Cessna 172
- Chaff (countermeasure)
- Chain
- Chain drive
- Chain-link fencing
- Chair
- Chairlift
- Channel Tunnel
- Charging station
- Chariot
- Chassis
- Chest (furniture)
- Chest of drawers
- Child safety seat
- Chilled beam
- Chiller
- Chimney
- Chisel
- Chord (aeronautics)
- Chrysler Building
- Circuit breaker
- Cirrus SR22
- Citadel
- Citroën DS
- City
- City block
- Civil engineering
- Cladding (metalworking)
- Clamp (tool)
- Classical control theory
- Clinker (boat building)
- Closet
- Clothes dryer
- Clothes iron
- Club (weapon)
- Clutch
- Coach (bus)
- Coach (carriage)
- Coachbuilder
- Coal-fired power station
- Coaxial rotors
- Cockpit
- Cockpit display system
- Coefficient of performance
- Coffee percolator
- Coffeemaker
- Coffin corner (aerodynamics)
- Cog (ship)
- Cogeneration
- Coilgun
- Coke (fuel)
- Collector road
- Collision avoidance system
- Colonnade
- Colosseum
- Column
- Combination lock
- Combined cycle power plant
- Combustion chamber
- Combustor
- Common rail
- Commutator (electric)
- Compactor
- Compartment (ship)
- Compass (drawing tool)
- Composite aircraft
- Composite armour
- Compound engine
- Compound steam engine
- Compressed-air energy storage
- Compression molding
- Compression ratio
- Compressor
- Compressor stall
- Computational fluid dynamics
- Computer-aided design
- Concentrated solar power
- Concentric tube heat exchanger
- Concorde
- Concrete masonry unit
- Concrete mixer
- Concrete slab
- Condenser (heat transfer)
- Condition monitoring
- Configuration management
- Constant air volume
- Constant speed drive
- Construction
- Construction 3D printing
- Construction aggregate
- Construction site safety
- Construction surveying
- Construction worker
- Constructive solid geometry
- Container ship
- Containment building
- Continuous track
- Continuously variable transmission
- Contrail
- Control car
- Control chart
- Control engineering
- Control knob
- Control loop
- Control panel (engineering)
- Control rod
- Control room
- Control system
- Control theory
- Control valve
- Controllability
- Controlled flight into terrain
- Controlled-access highway
- Convection heater
- Convertible
- Conveyor belt
- Conveyor system
- Cook stove
- Cooker
- Cooling tower
- Corner case
- Corrective maintenance
- Cottage
- Couch
- Counter-battery radar
- Countersteering
- Counterweight
- Course (architecture)
- Courtyard
- Crab claw sail
- Crane (machine)
- Crank (mechanism)
- Crankshaft
- Crew resource management
- Cross slope
- Crossbow
- Crosswind
- Crowbar (tool)
- Cruise control
- Cruise missile
- Cruise ship
- Crystalline silicon
- CTOL
- Cubic metre
- Culvert
- Cupboard
- Curb
- Current limiting
- Current transformer
- Cutter (boat)
- Cutting
- Cutting tool (machining)
- Cycling
- Cylinder (engine)
- Dagger
- Dam
- Damp proofing
- Damper (flow)
- Dart (missile)
- Dashboard
- Data-driven control system
- Daylighting
- DC motor
- DC-to-DC converter
- Dead man's switch
- Deck (building)
- Deck (ship)
- Deconstruction (building)
- Deep foundation
- Deep-cycle battery
- Defensive wall
- Deflection (engineering)
- Dehumidifier
- Deicing
- Demand factor
- Demand response
- Demolition
- Dependability
- Depth charge
- Depth gauge
- Derailment
- Describing function
- Desk
- Destroyer
- Destructive testing
- Detonator
- Dial (measurement)
- Die (manufacturing)
- Die casting
- Diesel engine
- Diesel fuel
- Diesel locomotive
- Differential (mechanical device)
- Diffuser (thermodynamics)
- Digital control
- Digital protective relay
- Dinghy
- Dining room
- Direct stiffness method
- Direct-drive mechanism
- Directed-energy weapon
- Directional stability
- Director (military)
- Dishwasher
- Dispatchable generation
- Distributed control system
- Distributed generation
- Distribution board
- Diving bell
- Diving chamber
- Dock (maritime)
- Dome
- Domestic robot
- Door
- Door breaching
- Door handle
- Door security
- Dormitory
- Double-decker bus
- Double-track railway
- Douglas DC-3
- Dowel
- Downtime
- Draft (hull)
- Dragline excavator
- Drain (plumbing)
- Drain rods
- Drain-waste-vent system
- Drainage gradient
- Draw plate
- Drawer (furniture)
- Drawing (manufacturing)
- Dredging
- Drill
- Drilling
- Drilling and blasting
- Drive shaft
- Drive wheel
- Drivetrain
- Driveway
- Driving
- Droop speed control
- Dropped ceiling
- Dry cell
- Dry dock
- Dry dung fuel
- Dry toilet
- Drywall
- Dual carriageway
- Dual control theory
- Duct (flow)
- Dugout (shelter)
- Dump truck
- Dust explosion
- Dustpan
- Dynamic braking
- Dynamic demand (electric power)
- Dynamo
- Earth oven
- Earth shelter
- Earth structure
- Earthing system
- Earthquake engineering
- Earthworks (engineering)
- Eaves
- Edge case
- Edged and bladed weapons
- Efficient energy use
- Egyptian pyramids
- Eiffel Tower
- Ejection seat
- Electric aircraft
- Electric battery
- Electric bicycle
- Electric boat
- Electric car
- Electric energy consumption
- Electric fence
- Electric generator
- Electric heating
- Electric light
- Electric locomotive
- Electric motor
- Electric motorcycles and scooters
- Electric power
- Electric power conversion
- Electric power distribution
- Electric power system
- Electric power transmission
- Electric resistance welding
- Electric stove
- Electric switchboard
- Electric vehicle
- Electric vehicle battery
- Electrical busbar system
- Electrical conduit
- Electrical enclosure
- Electrical fault
- Electrical grid
- Electrical room
- Electrical safety testing
- Electrical substation
- Electrical treeing
- Electrical wiring
- Electrician
- Electricity delivery
- Electricity generation
- Electricity meter
- Electrification
- Electroforming
- Electromagnetic lock
- Electronic control unit
- Electronic lock
- Electroshock weapon
- Electrostatic generator
- Elevator
- Embankment (earthworks)
- Embankment dam
- Emergency brake (train)
- Emergency exit
- Emergency landing
- Emergency locator beacon
- Emergency position-indicating radiobeacon station
- Emergency power system
- Empennage
- Empire State Building
- Energy conservation
- Energy conversion efficiency
- Energy demand management
- Energy efficiency in transport
- Energy hierarchy
- Energy principles in structural mechanics
- Energy quality
- Energy recovery
- Energy return on investment
- Energy storage
- Energy supply
- Engine
- Engine configuration
- Engine control unit
- Engine displacement
- Engine knocking
- Engine power
- Engine room
- Engine tuning
- Engine-generator
- Engineer
- Engineering
- Engineering design process
- Engineering drawing
- Engineering fit
- Engineering tolerance
- Environmental control system
- Escalator
- Esplanade
- Ethanol fuel
- Euler–Bernoulli beam theory
- Eurofighter Typhoon
- Evacuation slide
- Evaporative cooler
- Evaporator
- Evaporator (marine)
- Excavator
- Exhaust gas
- Exhaust gas recirculation
- Exhaust system
- Exothermic welding
- Explosive detection
- Explosive device
- Explosive weapon
- Explosives engineering
- Extension cord
- External ballistics
- External combustion engine
- Extrusion
- Factor of safety
- Factory
- Factory system
- Fail-safe
- Failure analysis
- Failure mode and effects analysis
- Failure mode, effects, and criticality analysis
- Failure rate
- Fallingwater
- Fallout shelter
- Fan (machine)
- Fan coil unit
- Fan heater
- Farmhouse
- Fast-neutron reactor
- Fathom
- Fault detection and isolation
- Fault tolerance
- Fault tree analysis
- Feed forward (control)
- Feedback
- Feedback linearization
- Fence
- Ferris wheel
- Ferry slip
- Fighter aircraft
- File (tool)
- Filing (metalworking)
- Filing cabinet
- Filling station
- Fin
- Fire alarm system
- Fire engine
- Fire escape
- Fire extinguisher
- Fire hose
- Fire hydrant
- Fire lance
- Fire protection
- Fire safety
- Fire sprinkler system
- Fire station
- Fire triangle
- Fire-control system
- Firearm
- Firearm maintenance
- Firearm malfunction
- Firebox (steam engine)
- Firefighting
- Firefighting apparatus
- Fireplace
- Fireproofing
- Firestop
- Firewood
- Fixed-wing aircraft
- Fixture (tool)
- Flameout
- Flap (aeronautics)
- Flare
- Flare (countermeasure)
- Flash fire
- Flashlight
- Flashover
- Flatbed trolley
- Flexibility method
- Flexible-fuel vehicle
- Flight
- Flight control surfaces
- Flight deck
- Flight dynamics (fixed-wing aircraft)
- Flight envelope
- Flight instruments
- Flight management system
- Flight planning
- Flight recorder
- Flight simulator
- Flight test
- Flintlock
- Flintlock mechanism
- Float (nautical)
- Flood barrier
- Floodgate
- Floodlight
- Floor
- Floor plan
- Flooring
- Flow conditioning
- Flow measurement
- Flue
- Flue gas
- Flue-gas desulfurization
- Fluid coupling
- Fluid power
- Fluid–structure interaction
- Fluorescent lamp
- Flush toilet
- Fly-by-wire
- Flying car (aircraft)
- Flying wing
- Flywheel
- Flywheel energy storage
- Food processor
- Foot (unit)
- Footbridge
- Footpath
- Forces on sails
- Ford Model T
- Ford Mustang
- Fore-and-aft rig
- Forensic engineering
- Forge
- Forging
- Forklift
- Forming (metalworking)
- Fortification
- Fortified tower
- Forward kinematics
- Fossil fuel
- Fossil fuel power station
- Fouling
- Foundation (engineering)
- Four-engined jet aircraft
- Four-wheel drive
- Framing (construction)
- Free surface effect
- French drain
- Frequency changer
- Fuel
- Fuel cell
- Fuel cell vehicle
- Fuel economy in aircraft
- Fuel economy in automobiles
- Fuel efficiency
- Fuel fraction
- Fuel gas
- Fuel injection
- Fuel oil
- Fuel pump
- Fuel tank
- Full state feedback
- Furlong
- Furniture
- Fuse (electrical)
- Fuse (explosives)
- Fused grid
- Fuselage
- Fusion power
- Fuze
- Fuzzy control system
- Gablefront house
- Galleon
- Galley
- Garage (residential)
- Garbage disposal unit
- Gas balloon
- Gas explosion
- Gas leak
- Gas lighting
- Gas stove
- Gas tungsten arc welding
- Gas turbine
- Gas-discharge lamp
- Gasoline
- Gate
- Gate (airport)
- Gatling gun
- Gauge (firearms)
- Gauge (instrument)
- Gear
- Gear stick
- Gear train
- General Dynamics F-16 Fighting Falcon
- Geometric dimensioning and tolerancing
- Geothermal heat pump
- Geothermal power
- Gimbal
- Girder
- Giza pyramid complex
- Glass cockpit
- Glider (aircraft)
- Gliding flight
- Glow stick
- Go-kart
- Golden Gate Bridge
- Gondola lift
- Governor (device)
- GPS aircraft tracking
- Grade separation
- Graduation (instrument)
- Grapeshot
- Gravity dam
- Great Wall of China
- Green building
- Grenade
- Grenade launcher
- Grid code
- Grid energy storage
- Grid plan
- Gridlock
- Grinding (abrasive cutting)
- Grinding machine
- Ground (electricity)
- Ground and neutral
- Ground effect (aerodynamics)
- Ground propulsion
- Ground speed
- Ground-coupled heat exchanger
- Guard rail
- Guggenheim Museum Bilbao
- Guidance system
- Guided bomb
- Gun
- Gun barrel
- Gun safety
- Gun turret
- Gunfire locator
- Gyrodyne
- Gyroscope
- H-infinity methods in control theory
- Hacksaw
- Hagia Sophia
- Halberd
- Hall
- Hamiltonian (control theory)
- Hamilton–Jacobi–Bellman equation
- Hammer
- Hand cannon
- Hand tool
- Handcuffs
- Handgun
- Handle
- Handrail
- Hangar
- Harbor
- Hard hat
- Harpoon
- Hatchback
- Head-up display
- Headlamp
- Headwind and tailwind
- Hearth
- Heat exchanger
- Heat pipe
- Heat pump
- Heat recovery ventilation
- Heat shield
- Heating element
- Heating oil
- Heating, ventilation, and air conditioning
- Heavy equipment
- Hectare
- Helicopter
- Helicopter deck
- Helicopter flight controls
- Helicopter height–velocity diagram
- Helicopter rotor
- Helipad
- Hierarchical control system
- Hierarchy of hazard controls
- High availability
- High voltage
- High-lift device
- High-rise building
- High-speed rail
- High-voltage cable
- High-voltage direct current
- Highway
- Hinge
- Hoist (device)
- Hole
- Home appliance
- Home automation
- Home security
- Hood (car)
- Hook
- Horse and buggy
- Horse-drawn vehicle
- Horsecar
- Horsepower
- Hose
- Hot air balloon
- Hot tub
- Hot-wiring
- House
- House numbering
- Housebarn
- Houseboat
- Hoverboard
- Hovercraft
- Howitzer
- Hull (watercraft)
- Human power
- Human-powered land vehicle
- Human-powered transport
- Human-powered watercraft
- Humanoid robot
- Humidifier
- Hut
- HVAC
- Hybrid electric vehicle
- Hybrid vehicle
- Hydraulic engineering
- Hydraulic jump
- Hydraulic motor
- Hydraulic pump
- Hydraulic rescue tools
- Hydraulics
- Hydroelectricity
- Hydrofoil
- Hydroforming
- Hydrophone
- Hydropower
- Hyperloop
- Hypersonic flight
- I-beam
- I-house
- Icebox
- Icebreaker
- Igloo
- Ignition system
- Ignitron
- Immobiliser
- Impeller
- Improvised explosive device
- Inboard motor
- Incandescent light bulb
- Incendiary device
- Inch
- Indicated airspeed
- Indoor air quality
- Indoor positioning system
- Induction coil
- Induction cooking
- Induction heater
- Induction motor
- Industrial and multiphase power plugs and sockets
- Industrial control system
- Industrial engineering
- Industrial robot
- Inertial measurement unit
- Inertial navigation system
- Infant bed
- Infiltration (HVAC)
- Inflatable boat
- Infrared heater
- Infrared homing
- Infrared lamp
- Injection moulding
- Injection pump
- Injector
- Input-to-state stability
- Inspection
- Instrument approach
- Instrument meteorological conditions
- Insulated glazing
- Insulated-gate bipolar transistor
- Intelligent electronic device
- Intelligent transportation system
- Interchange (road)
- Interchangeable parts
- Interlock (engineering)
- Internal ballistics
- Internal combustion engine
- Internal combustion engine cooling
- Intersection (road)
- Inverse kinematics
- Inverter compressor
- Investment casting
- Ironclad warship
- Ishikawa diagram
- Iterative learning control
- Jack (device)
- Jackhammer
- Jackscrew
- Javelin
- Jet aircraft
- Jet airliner
- Jet bridge
- Jet engine
- Jet fuel
- Jet pack
- Jet Ski
- Jetboat
- Jetty
- Jibe
- Jig (tool)
- Joist
- Jump start (vehicle)
- Junction (rail)
- Junction (traffic)
- Junction box
- Kayak
- Keel
- Kerosene lamp
- Ketch
- Kettle
- Key (lock)
- Key control
- Keycard lock
- Kick scooter
- Kick start
- Kill switch
- Kilometre
- Kilometres per hour
- Kinematic chain
- Kinematic diagram
- Kinematics equations
- Kinetic energy penetrator
- Kitchen
- Kite
- Knife
- Knot (unit)
- Knurling
- Laborer
- Ladder
- Lamination
- Lance
- Land mine
- Land transport
- Landing
- Landing gear
- Lane
- Lantern
- Large aircraft
- Laser cutting
- Laser guidance
- Laser rangefinder
- Lashed-lug boat
- Latch
- Lateen
- Lathe
- Laundry room
- Leading-edge slat
- Lead–acid battery
- Lead–lag compensator
- Leak
- Leak detection
- Leakage inductance
- Leaning Tower of Pisa
- LED lamp
- Leg mechanism
- Legged robot
- Lethal autonomous weapon
- Level crossing
- Lever action
- Lever tumbler lock
- LIDAR traffic enforcement
- Lifeboat (shipboard)
- Lifebuoy
- Lifting body
- Light aircraft
- Light fixture
- Light pollution
- Light switch
- Light-water reactor
- Lightbulb socket
- Lighter
- Lighting
- Lightning rod
- Limit state design
- Limit switch
- Limousine
- Line shaft
- Linear actuator
- Linear–quadratic regulator
- Linear–quadratic–Gaussian control
- Linkage (mechanical)
- Liquid fuel
- List of house types
- List of maritime disasters in the 20th century
- List of submarine incidents since 2000
- Lists of rail accidents
- Lithic reduction
- Lithium battery
- Lithium polymer battery
- Lithium-ion battery
- Lithium–sulfur battery
- Living room
- Load balancing (electrical power)
- Load factor (aeronautics)
- Load following power plant
- Load management
- Loader (equipment)
- Loading dock
- Lobby (room)
- Lock (security device)
- Lock (water navigation)
- Lock and key
- Lock picking
- Locker
- Lockheed C-130 Hercules
- Lockheed Martin F-22 Raptor
- Locomotive
- Lofting
- Log cabin
- Logbook
- Loitering munition
- Long gun
- Longbow
- Longhouse
- Longitudinal static stability
- Longship
- Lost-wax casting
- Louvre Palace
- Low-energy house
- Lubrication
- Luxury car
- Machine
- Machine (mechanical)
- Machine element
- Machine gun
- Machine press
- Machine tool
- Machining
- Magazine (firearms)
- Maglev
- Magnetohydrodynamic converter
- Magnetohydrodynamic drive
- Magnetohydrodynamic generator
- Magnetometer
- Main battle tank
- Mains electricity
- Maintenance (technical)
- Major appliance
- Mallet
- Mandrel
- Manhattan Project
- Manhole
- Manipulator (device)
- Manoeuvring thruster
- Mansion
- Manual transmission
- Manufacturing engineering
- Marina
- Marine engineering
- Marine propulsion
- Marine radar
- Marine steam engine
- Maritime transport
- Masonry
- Mast (sailing)
- Master keying
- Match
- Matchlock
- Material handling
- Material-handling equipment
- Mean time between failures
- Mean time to recovery
- Mean time to repair
- Mechanic
- Mechanical arm
- Mechanical efficiency
- Mechanical engineering
- Mechanical floor
- Mechanical room
- Mechanism (engineering)
- Median strip
- Megalith
- Melee weapon
- Menhir
- Merchant ship
- Merchant vessel
- Mercury-arc valve
- Metacentric height
- Metal detector
- Metal fabrication
- Metal lathe
- Metal spinning
- Metalworking
- Metalworking hand tool
- Metro station
- Microgrid
- Micrometer
- Microwave oven
- Mile
- Miles per hour
- Military aircraft
- Military engineering
- Military light utility vehicle
- Military robot
- Military technology
- Military vehicle
- Mill (grinding)
- Milling (machining)
- Mini
- Minivan
- Missile
- Missile guidance
- Mixed-mode ventilation
- Mixer (appliance)
- Moat
- Mobile home
- Mobile manipulator
- Mobile robot
- Mode of transport
- Model predictive control
- Molding (process)
- Molotov cocktail
- Monohull
- Monoplane
- Mooring
- Mop
- Moped
- Mortar (weapon)
- Mother ship
- Motion control
- Motion simulator
- Motor controller
- Motor fuel
- Motor oil
- Motor vehicle
- Motorboat
- Motorcycle
- Motorcycle engine
- Motorcycle frame
- Motorcycle handlebar
- Motorcycle suspension
- Motorcycle transmission
- Motorcycling
- Motorized bicycle
- Motorized scooter
- Motor–generator
- Mountain bike
- Moveable bridge
- Moving parts
- Moving walkway
- MOX fuel
- Multi-cylinder engine
- Multi-function display
- Multi-junction solar cell
- Multi-valve
- Multihull
- Multiplane (aeronautics)
- Multiple rocket launcher
- Multiple unit
- Multiple-barrel firearm
- Multiple-unit train control
- Multiple-vehicle collision
- Multirotor
- Multistorey car park
- Multiway switching
- Musket
- Muzzle flash
- Muzzle velocity
- Muzzleloader
- Nail gun
- Napalm
- Narrow-body aircraft
- Natural building
- Natural gas vehicle
- Natural ventilation
- Nautical mile
- Naval architecture
- Naval mine
- Naval ram
- Navigation system
- Negative feedback
- Neon lamp
- Neon lighting
- Neuschwanstein Castle
- Neutron bomb
- New Urbanism
- Newcomen atmospheric engine
- Nickel–cadmium battery
- Nickel–metal hydride battery
- Noise barrier
- Noise control
- Noise pollution
- Non-lethal weapon
- Nondestructive testing
- Nonlinear control
- Nose cone
- Notre-Dame de Paris
- Nozzle
- Nuclear and radiation accidents and incidents
- Nuclear engineering
- Nuclear fuel
- Nuclear fuel cycle
- Nuclear marine propulsion
- Nuclear meltdown
- Nuclear power
- Nuclear power plant
- Nuclear propulsion
- Nuclear reactor
- Nuclear reactor core
- Nuclear reactor safety system
- Nuclear reprocessing
- Nuclear safety and security
- Nuclear weapon
- Nuclear weapon design
- Nuclear weapons testing
- Numerical control
- Numerical relay
- Nut driver
- Oar
- Oblique projection
- Observability
- Ocean liner
- Octane rating
- Off-road vehicle
- Offshore wind power
- Oil heater
- Oil lamp
- Oil tanker
- One-line diagram
- Open-channel flow
- Open-loop controller
- Open-wheel car
- Operating temperature
- Operational availability
- Optimal control
- Optimal projection equations
- Ornithopter
- Outboard motor
- Outgassing
- Outrigger boat
- Oven
- Overcurrent
- Overdrive (mechanics)
- Overhead line
- Overhead power line
- Overillumination
- Overpass
- Overspeed
- Oxy-fuel welding and cutting
- Paddle
- Padlock
- Paint roller
- Palace of Versailles
- Palace of Westminster
- Pallet jack
- Pallet racking
- Panthéon
- Parachute
- Parallel manipulator
- Parasite aircraft
- Parking
- Parking lot
- Parking meter
- Parking space
- Parthenon
- Partial discharge
- Passenger car (rail)
- Passenger ship
- Passing loop
- Passive cooling
- Passive fire protection
- Passive house
- Passive solar building design
- Patio
- Paver (vehicle)
- Pavilion
- Payload
- Peak demand
- Peaking power plant
- Pedestrian
- Pedestrian crossing
- Pedestrian zone
- Pedway
- Pellet (air gun)
- Pellet fuel
- Per-unit system
- Perceptual control theory
- Percussion cap
- Permeability (spatial and transport planning)
- Personal flotation device
- Personal transporter
- Personal watercraft
- Petrol engine
- Petronas Towers
- Phase converter
- Photoelectrochemical cell
- Photovoltaic system
- Photovoltaics
- Physical security
- Pickup truck
- PID controller
- Pier
- Pier (architecture)
- Pike (weapon)
- Pile driver
- Pin tumbler lock
- Pipe (fluid conveyance)
- Pipe flow
- Pipecutter
- Pipeline transport
- Piping and plumbing fitting
- Pistol
- Piston
- Piston valve (steam engine)
- Pit (nuclear weapon)
- Pit latrine
- Pitot-static system
- Plain bearing
- Plan (drawing)
- Plane (tool)
- Planer (metalworking)
- Plant (control theory)
- Plasma arc welding
- Plasma cutting
- Plasma torch
- Plasterwork
- Plate heat exchanger
- Platform mound
- Plenum space
- Pliers
- Plug-in electric vehicle
- Plug-in hybrid
- Plumb bob
- Plumber
- Plumber's snake
- Plumbing
- Plumbing fixture
- Plunger
- Pneumatic motor
- Pneumatic tool
- Pneumatics
- Pocketknife
- Point of sail
- Pole building framing
- Pole weapon
- Polishing
- Polishing (metalworking)
- Polyphase system
- Pontoon bridge
- Pontryagin's maximum principle
- Poppet valve
- Porch
- Port
- Portcullis
- Portico
- Positive feedback
- Pothole
- Pound (mass)
- Power cable
- Power cord
- Power electronics
- Power engineering
- Power inverter
- Power MOSFET
- Power outage
- Power plant engineering
- Power semiconductor device
- Power station
- Power steering
- Power strip
- Power supply
- Power tool
- Power transmission
- Power-flow study
- Power-system automation
- Power-system protection
- Power-to-weight ratio
- Powered aircraft
- Powered exoskeleton
- Powered lift
- Powertrain
- Pre-ignition
- Precision-guided munition
- Predictive maintenance
- Prefabricated building
- Prefabrication
- Pressure measurement
- Pressure regulator
- Pressure sensor
- Pressure switch
- Pressurized water reactor
- Primary cell
- Process control
- Process variable
- Programmable logic controller
- Projectile
- Projectile motion
- Propeller
- Propeller (aeronautics)
- Propelling nozzle
- Propfan
- Proportional control
- Propulsion
- Propulsive efficiency
- Protective relay
- Prototype
- Protractor
- Pseudospectral optimal control
- Pulse detonation engine
- Pulsejet
- Pump
- Pump action
- Pump-jet
- Pumped-storage hydroelectricity
- Punch (tool)
- Push start
- Push-button
- Push–pull train
- Pyramid
- Quadcopter
- Quadruple glazing
- Quick-firing gun
- R-value (insulation)
- Radar altimeter
- Radar cross-section
- Radar gun
- Radar picket
- Radburn design housing
- Radial engine
- Radiant heating and cooling
- Radiator
- Radiator (engine cooling)
- Radiator (heating)
- Radio control
- Radome
- Raft
- Rafter
- Rail profile
- Rail transport
- Rail yard
- Railgun
- Railroad car
- Railroad switch
- Railway air brake
- Railway brake
- Railway electrification system
- Railway platform
- Railway signal
- Railway signalling
- Rain gutter
- Raised floor
- Ramjet
- Rammed earth
- Rampart (fortification)
- Ranch-style house
- Range Rover
- Ranged weapon
- Rangefinder
- Ratchet (device)
- Raygun
- Reactive armour
- Real-time locating system
- Reamer
- Rechargeable battery
- Reciprocating engine
- Recloser
- Recoil
- Recoilless rifle
- Rectifier
- Recumbent bicycle
- Redline
- Redundancy (engineering)
- Refrigeration
- Refrigerator
- Regenerative brake
- Regenerative heat exchanger
- Regulator (automatic control)
- Relaxed stability
- Relay
- Reliability engineering
- Relief valve
- Remote control vehicle
- Remote manipulator
- Remote terminal unit
- Remotely operated underwater vehicle
- Renewable energy
- Repeating rifle
- Residual-current device
- Retaining wall
- Reticle
- Retreating blade stall
- Retroreflector
- Rev limiter
- Reverse engineering
- Revolutions per minute
- Revolver
- Revolving door
- Rickshaw
- Ride height
- Rifle
- Rifling
- Rigging
- Riverboat
- Road
- Road hierarchy
- Road junction
- Road map
- Road roller
- Road surface
- Road surface marking
- Road traffic control
- Road traffic safety
- Road transport
- Roadster (automobile)
- Roadworks
- Robot
- Robot end effector
- Robot kinematics
- Robot locomotion
- Robotic arm
- Robotic sensing
- Robotic vacuum cleaner
- Robotics
- Robust control
- Rocket artillery
- Rocket launcher
- Rocket-powered aircraft
- Rocket-propelled grenade
- Roller chain
- Roller coaster
- Rolling (metalworking)
- Rolling-element bearing
- Rollover (fire)
- Roof
- Roof shingle
- Roof tiles
- Room
- Room air distribution
- Roomba
- Root cause analysis
- Rotary actuator
- Rotary cannon
- Rotary converter
- Rotary engine
- Rotor (electric)
- Rotorcraft
- Round shot
- Roundabout
- Rowing
- Rozière balloon
- Rubber bullet
- Rudder
- Ruler
- Runaway train
- Running rigging
- Runway
- Safe
- Safe deposit box
- Safe room
- Safe-cracking
- Safety engineering
- Safety reflector
- Safety testing of explosives
- Safety valve
- Safety-critical system
- Sail
- Sail plan
- Sailboat
- Sailing
- Sailing ballast
- Sailing ship
- Saint Basil's Cathedral
- Sand casting
- Sandbag
- Sawmill
- SCADA
- Scaffolding
- Schooner
- Scissors
- Scooter (motorcycle)
- Scramjet
- Scrap
- Screwdriver
- Scroll compressor
- Scrubber
- Sea lane
- Seaplane
- Searchlight
- Seat belt
- Secret passage
- Security alarm
- Sedan (automobile)
- Segway PT
- Seismic base isolation
- Selective fire
- Self-contained breathing apparatus
- Self-destruct
- Self-propelled artillery
- Self-tuning
- Semi-active radar homing
- Semi-automatic firearm
- Semi-automatic transmission
- Semi-trailer
- Semi-trailer truck
- Sensitivity (control systems)
- Separation barrier
- Separation principle
- Separation principle in stochastic control
- Serial manipulator
- Service (motor vehicle)
- Service robot
- Serviceability (structure)
- Servo (radio control)
- Servomechanism
- Servomotor
- Setpoint (control system)
- Seven basic tools of quality
- Sewn boat
- Shackle
- Shaft (civil engineering)
- Shaft (mechanical engineering)
- Shallow foundation
- Shaped charge
- Shaper
- Shear (sheet metal)
- Shear strength
- Shear wall
- Shearing (manufacturing)
- Shed
- Shelf (storage)
- Shell (projectile)
- Shell and tube heat exchanger
- Ship
- Ship breaking
- Ship class
- Ship identifier
- Ship model basin
- Ship motions
- Ship resistance and propulsion
- Ship stability
- Ship tracks
- Shipbuilding
- Shipwrecking
- Shipyard
- Shock absorber
- Short circuit
- Shot (pellet)
- Shotgun
- Shoulder-fired missile
- Shovel
- Shower
- Shutdown (nuclear reactor)
- Side-stick
- Sidewalk
- Siding
- Siege engine
- Sight (device)
- Signalling block system
- Signalling control
- Silencer (firearms)
- Single carriageway
- Single point of failure
- Single-cylinder engine
- Single-input single-output system
- Single-phase electric power
- Single-track railway
- Single-wire earth return
- Sink
- Site plan
- Skid (aerodynamics)
- Skid (automobile)
- Skylight
- Skyscraper
- Skyway
- Sled
- Sledgehammer
- Sliding door
- Sliding mode control
- Sling (weapon)
- Slip (aerodynamics)
- Slip (vehicle dynamics)
- Sloop
- Small appliance
- Small engine
- Smart city
- Smart grid
- Smart highway
- Smart key
- Smart meter
- Smoke hole
- Smoke screen
- Smoothbore
- Sniper rifle
- Snow cave
- Snow chains
- Snow removal
- Snowmobile
- Snowplow
- Solar cell
- Solar cell efficiency
- Solar chimney
- Solar energy
- Solar gain
- Solar panel
- Solar power
- Solar simulator
- Solar thermal collector
- Solar thermal energy
- Solar tracker
- Solar water heating
- Soldering
- Soldering iron
- Solid fuel
- Solid modeling
- Sonic weapon
- Sophia (robot)
- Sound barrier
- Soundproofing
- Space frame
- Space heater
- Span (engineering)
- Spark plug
- Spark-ignition engine
- Spear
- Spear-thrower
- Speargun
- Speed bump
- Speedometer
- Spent fuel pool
- Spent nuclear fuel
- Spike strip
- Spillway
- Spin (aerodynamics)
- Spire
- Spirit level
- Spline (mechanical)
- Split-level home
- Split-phase electric power
- Spoiler (aeronautics)
- Spoke
- Sponge (tool)
- Sport utility vehicle
- Sports car
- Spot welding
- Spring (device)
- Sprocket
- Square rig
- St Paul's Cathedral
- St. Peter's Basilica
- Stack effect
- Stack interchange
- Stage station
- Stagecoach
- Stairs
- Stall (fluid mechanics)
- Stamping (metalworking)
- Stamping press
- Stanchion
- Standing rigging
- Staple gun
- Starter (engine)
- Starting fluid
- State observer
- State-space representation
- Statistical process control
- Stator
- Statue of Liberty
- Stealth aircraft
- Stealth ship
- Stealth technology
- Steam engine
- Steam generator (nuclear power)
- Steam locomotive
- Steam turbine
- Steamboat
- Steamroller
- Steamship
- Steel frame
- Steering
- Steering wheel
- Stepper motor
- Stewart platform
- Stilt house
- Stirling engine
- Stochastic control
- Stone (unit)
- Stone circle
- Stone tool
- Stonehenge
- Storey
- Storm cellar
- Stove
- Strain gauge
- Streamliner
- Street
- Street gutter
- Street light
- Street or road name
- Stress testing
- Stress–strain analysis
- Stroke (engine)
- Structural analysis
- Structural dynamics
- Structural element
- Structural engineering
- Structural integrity and failure
- Structural load
- Structural mechanics
- Structural steel
- Structural support
- Structural system
- Structure fire
- Strut
- Stun grenade
- Subcritical reactor
- Submachine gun
- Submarine
- Submarine hull
- Submarine power cable
- Submersible
- Subway (underpass)
- Suction cup
- Supercharger
- Supercritical water reactor
- Superheater
- Superinsulation
- Supermaneuverability
- Supermarine Spitfire
- Supersonic aircraft
- Surface finish
- Surface finishing
- Surface roughness
- Surface-to-air missile
- Surge protector
- Suspension bridge
- Sustainable architecture
- Sustainable development
- Sustainable energy
- Sustainable urbanism
- Swarm robotics
- Swept wing
- Swimming pool
- Swing (seat)
- Swiss Army knife
- Switch
- Switchblade
- Switched-mode power supply
- Switchgear
- Sword
- Sydney Opera House
- Synchronous motor
- Synthetic fuel
- Systems engineering
- T-beam
- Table (furniture)
- Tachometer
- Tacking (sailing)
- Tail rotor
- Taj Mahal
- Takeoff
- Takeoff and landing
- Tandem rotors
- Tank
- Tanker (ship)
- Tap (valve)
- Tape measure
- Taser
- Technical drawing
- Telemetry
- Teleoperation
- Telerobotics
- Telescopic sight
- Tensile structure
- Terminal ballistics
- Terrace (building)
- Terrain awareness and warning system
- Tesla Model S
- Thermal energy storage
- Thermal insulation
- Thermal lance
- Thermal mass
- Thermal power station
- Thermal-neutron reactor
- Thermobaric weapon
- Thermoelectric cooling
- Thermoelectric generator
- Thermoforming
- Thermonuclear weapon
- Thermostat
- Thin-film solar cell
- Thorium fuel cycle
- Thorium-based nuclear power
- Threading (manufacturing)
- Three Gorges Dam
- Three-phase
- Three-phase electric power
- Throttle
- Thrust lever
- Thrust reversal
- Thrust vectoring
- Thrust-to-weight ratio
- Thyratron
- Thyristor
- Tie (engineering)
- Tile
- Tiltrotor
- Tiltwing
- Timber framing
- Time lock
- Time-delay combination locks
- Timing belt (camshaft)
- Tire
- TNT equivalent
- Toaster
- Toilet
- Ton
- Tool
- Toolbox
- Toothed belt
- Torch
- Torpedo
- Torque converter
- Tow truck
- Towed array sonar
- Tower
- Tower house
- Towing
- Town square
- Toyota Prius
- Track (rail transport)
- Track gauge
- Tracking system
- Traction (engineering)
- Traction engine
- Traction motor
- Tractor unit
- Traffic
- Traffic barrier
- Traffic calming
- Traffic collision
- Traffic cone
- Traffic congestion
- Traffic enforcement camera
- Traffic engineering (transportation)
- Traffic flow
- Traffic light
- Traffic sign
- Trailer (vehicle)
- Train
- Train station
- Train wreck
- Tram
- Tram stop
- Tranquillizer gun
- Transformer
- Transformer types
- Transit bus
- Transit map
- Transitional ballistics
- Translational lift
- Transmission (mechanics)
- Transmission tower
- Transport
- Transportation forecasting
- Transportation planning
- Trap (plumbing)
- Trapdoor
- Treadwheel
- Trebuchet
- Tree house
- Tricycle
- Trigger (firearms)
- Trimaran
- Triple modular redundancy
- Trolleybus
- Trombe wall
- Troubleshooting
- Trowel
- Truck
- Truck driver
- True airspeed
- Trunk (car)
- Truss
- Truss bridge
- Tugboat
- Tuned mass damper
- Tunnel
- Tunnel boring machine
- Tunnel construction
- Turbine
- Turbo generator
- Turbocharger
- Turboexpander
- Turbofan
- Turbojet
- Turbomachinery
- Turboprop
- Turbopump
- Turboshaft
- Turning
- Turnstile
- Turret
- Twinjet
- Ultrasonic testing
- Underfloor air distribution
- Underfloor heating
- Underground city
- Undersea tunnel
- Underwater habitat
- Unguided bomb
- Uninterruptible power supply
- Unit injector
- Universal motor
- Unmanned aerial vehicle
- Unmanned combat aerial vehicle
- Unmanned ground vehicle
- Unmanned surface vehicle
- Unmanned underwater vehicle
- Unmanned vehicle
- Unpowered aircraft
- Urban area
- Urban decay
- Urban density
- Urban design
- Urban ecology
- Urban green space
- Urban heat island
- Urban park
- Urban planning
- Urban renewal
- Urban sprawl
- Urbanism
- Urbanization
- Utility frequency
- Utility pole
- Utility tunnel
- V speeds
- Vacuum chamber
- Vacuum cleaner
- Vacuum engineering
- Vacuum forming
- Vacuum pump
- Valve
- Valvetrain
- Van
- Vapor-compression refrigeration
- Variable air volume
- Variable renewable energy
- Variable-frequency drive
- Variometer
- Vault (architecture)
- Vehicle
- Vehicle armour
- Vehicle emissions control
- Vehicle frame
- Vehicle identification number
- Vehicle inspection
- Vehicle location data
- Vehicle recycling
- Vehicle registration plate
- Vehicle tracking system
- Vehicle-to-grid
- Ventilation (architecture)
- Ventilative cooling
- Veranda
- Verification and validation
- Vernier scale
- Vessel traffic service
- Vibration control
- Vibration isolation
- Vibrator (mechanical)
- Villa
- Vise
- Visual meteorological conditions
- Voith Turbo-Transmissions
- Volkswagen Beetle
- Voltage converter
- Voltage regulation
- Voltage regulator
- Voltage spike
- Vortex ring state
- VTOL
- Wagon
- Wagonway
- Wake turbulence
- Walkability
- Walking vehicle
- Walkway
- Wall
- War hammer
- Warded lock
- Wardrobe
- Warhead
- Warship
- Washing machine
- Waste heat
- Waste heat recovery unit
- Watchtower
- Water cannon
- Water heating
- Water jet cutter
- Water landing
- Water metering
- Water turbine
- Water wheel
- Watercraft
- Waterline
- Watermill
- Waterproofing
- Watt steam engine
- Wattle and daub
- Weapon
- Weapon mount
- Weighing scale
- Welding
- Westminster Abbey
- Wharf
- Wheel
- Wheel clamp
- Wheelbarrow
- Wheelchair ramp
- Wheellock
- Whiteprint
- Wide area synchronous grid
- Wide-body aircraft
- Willys MB
- Winch
- Wind farm
- Wind power
- Wind tunnel
- Wind turbine
- Windmill
- Window
- Windscreen wiper
- Windshield
- Windward and leeward
- Wing
- Wing configuration
- Wing loading
- Wingspan
- Wingtip vortices
- Winter service vehicle
- Wire stripper
- Wire wheel
- Wood carving
- Wood finishing
- Wood flooring
- Wood fuel
- Wood grain
- Wood-burning stove
- Woodturning
- Woodworking
- Woodworking joints
- Workbench
- Working fluid
- World energy consumption
- Wrecking ball
- Wrecking yard
- Wrench
- Yacht
- Yawl
- Yoke (aeronautics)
- Zero-emissions vehicle
- Zero-energy building
- Zinc–carbon battery