BOMwiki the bill-of-materials encyclopedia
30,441,948 parts mapped · 192,925 items

Change #32

Accepted by sd on 2026-09-16 03:07. It is live on the pages below; each page's History tab shows the resulting revision.

Change #32 · Deepen the helicopter bill of materials: fasteners, wiring, hoses and fittings, engine internals and hardware counted as parts accepted

by sd · 2026-09-16 03:07 · 78 nodes

New: Hex Bolt helicopter-hex-bolt

  • Created Hex Bolt (part): "Flanged hex bolt, M8 to M24, used throughout the structure, covers and equipment mounts."

New: Hex Nut helicopter-hex-nut

  • Created Hex Nut (part): "Flanged or nyloc hex nut mating the bolts."

New: Washer helicopter-washer

  • Created Washer (part): "Flat or spring washer under bolt heads and nuts."

New: Cable Tie & Clamp helicopter-cable-tie

  • Created Cable Tie & Clamp (part): "Tie, P-clip or saddle clamp securing wiring, hoses and lines to the structure."

New: Insulated Wire (cut length) helicopter-wire

  • Created Insulated Wire (cut length) (part): "One cut-to-length insulated conductor in the harness, terminated at both ends."

New: Crimp Terminal helicopter-crimp-terminal

  • Created Crimp Terminal (part): "Tin-plated terminal crimped to a wire end and seated in a connector or on a stud."

New: Fuse helicopter-fuse

  • Created Fuse (part): "Blade, midi or cartridge fuse protecting one circuit."

New: Airframe Rivet helicopter-rivet

  • Created Airframe Rivet (part): "Solid or blind rivet joining skins, frames and stringers."

New: Fuselage Frame helicopter-frame

  • Created Fuselage Frame (part): "Formed or machined transverse frame of the cabin structure or tail boom."

New: Stringer & Longeron helicopter-stringer

  • Created Stringer & Longeron (part): "Longitudinal stiffener riveted to the skin."

New: Fairing & Cowling helicopter-fairing

  • Created Fairing & Cowling (part): "Removable composite fairing or engine cowling panel with quick-release latches."

New: Access Panel helicopter-access-panel

  • Created Access Panel (part): "Removable inspection panel with camloc or screw fasteners."

New: Latch & Camloc helicopter-latch

  • Created Latch & Camloc (part): "Quarter-turn fastener or latch on a cowling, door or panel."

New: Bonding Jumper helicopter-bonding-jumper

  • Created Bonding Jumper (part): "Braided strap electrically bonding a panel or component to the airframe."

New: Door Hinge & Latch helicopter-door-hardware

  • Created Door Hinge & Latch (part): "Hinge, latch, stay and jettison mechanism for one cabin door."

New: Seat Belt & Harness helicopter-seat-belt

  • Created Seat Belt & Harness (part): "Four-point harness with inertia reel for one seat."

New: Interior Trim Panel helicopter-interior-trim

  • Created Interior Trim Panel (part): "Lightweight moulded lining panel inside the cabin."

New: Soundproofing Blanket helicopter-soundproofing

  • Created Soundproofing Blanket (part): "Quilted insulation blanket behind the cabin lining."

New: Floor Panel helicopter-floor-panel

  • Created Floor Panel (part): "Honeycomb sandwich floor panel with tie-down fittings."

New: Cargo Tie-Down Fitting helicopter-tie-down

  • Created Cargo Tie-Down Fitting (part): "Recessed ring in the floor for cargo restraint."

New: Horizontal Stabilizer helicopter-horizontal-stabilizer

  • Created Horizontal Stabilizer (part): "Fixed tailplane on the tail boom with end plates."

New: Vertical Fin helicopter-vertical-fin

  • Created Vertical Fin (part): "Fin at the end of the tail boom carrying the tail rotor."

New: Tail Rotor Guard helicopter-tail-rotor-guard

  • Created Tail Rotor Guard (part): "Tubular guard below the tail rotor."

New: Blade Attachment Bolt helicopter-blade-bolt

  • Created Blade Attachment Bolt (part): "Precision bolt and bushing retaining a rotor blade in its grip."

New: Elastomeric Bearing helicopter-elastomeric-bearing

  • Created Elastomeric Bearing (part): "Laminated rubber and steel bearing allowing blade flap, lead-lag and feathering."

New: Droop Stop helicopter-droop-stop

  • Created Droop Stop (part): "Stop limiting blade droop at rest and low rotor speed."

New: Rotor Brake helicopter-rotor-brake

  • Created Rotor Brake (part): "Disc brake on the transmission stopping the rotor after shutdown."

New: Mast Bearing helicopter-mast-bearing

  • Created Mast Bearing (part): "Large bearing supporting the rotor mast in the transmission housing."

New: Driveshaft Hanger Bearing helicopter-hanger-bearing

  • Created Driveshaft Hanger Bearing (part): "Bearing and support hanging the tail rotor driveshaft along the boom."

New: Flexible Coupling helicopter-flex-coupling

  • Created Flexible Coupling (part): "Thomas or diaphragm coupling between driveshaft sections."

New: Transmission Mount helicopter-transmission-mount

  • Created Transmission Mount (part): "Strut or elastomeric mount transferring rotor loads into the cabin roof structure."

New: Chip Detector helicopter-chip-detector

  • Created Chip Detector (part): "Magnetic plug that warns of metal particles in the gearbox oil."

New: Torque & Speed Sensor helicopter-torque-sensor

  • Created Torque & Speed Sensor (part): "Sensor on the transmission input reporting torque and rotor speed."

New: Compressor Blade helicopter-compressor-blade

  • Created Compressor Blade (part): "One rotor blade of the axial or centrifugal compressor."

New: Compressor Stator Vane helicopter-compressor-vane

  • Created Compressor Stator Vane (part): "One stationary vane of the compressor."

New: Turbine Blade helicopter-turbine-blade

  • Created Turbine Blade (part): "One blade of the gas-generator or power turbine."

New: Turbine Nozzle Vane helicopter-turbine-vane

  • Created Turbine Nozzle Vane (part): "One stationary vane directing gas onto a turbine stage."

New: Fuel Nozzle helicopter-fuel-nozzle

  • Created Fuel Nozzle (part): "Atomising nozzle spraying fuel into the combustor."

New: Igniter Plug helicopter-igniter

  • Created Igniter Plug (part): "High-energy spark igniter in the combustor."

New: Engine Mount helicopter-engine-mount

  • Created Engine Mount (part): "Strut and fitting attaching the engine to the deck."

New: Exhaust Duct helicopter-exhaust-duct

  • Created Exhaust Duct (part): "Stainless exhaust duct and ejector."

New: Air Inlet & Particle Separator helicopter-inlet

  • Created Air Inlet & Particle Separator (part): "Engine air inlet with inertial particle separator or barrier filter."

New: Engine Oil Tank & Cooler helicopter-engine-oil-system

  • Created Engine Oil Tank & Cooler (part): "Engine oil tank and air-cooled oil cooler with blower."

New: Engine Sensor helicopter-engine-sensor

  • Created Engine Sensor (part): "N1, N2, torque, temperature, pressure and vibration sensors."

New: Engine Bolt & Stud helicopter-engine-bolt

  • Created Engine Bolt & Stud (part): "Fasteners in the engine and its installation."

New: Control Rod helicopter-control-rod

  • Created Control Rod (part): "Push-pull rod in the flight control run."

New: Bellcrank & Lever helicopter-bellcrank

  • Created Bellcrank & Lever (part): "Pivoting lever changing the direction of a control run."

New: Rod End Bearing helicopter-rod-end

  • Created Rod End Bearing (part): "Spherical rod end at each end of a control rod."

New: Hydraulic Line helicopter-hydraulic-line

  • Created Hydraulic Line (part): "Rigid or flexible line in the servo hydraulic system."

New: Trim Actuator helicopter-trim-actuator

  • Created Trim Actuator (part): "Electric actuator providing force trim on a control axis."

New: Hydraulic Filter & Accumulator helicopter-hydraulic-filter

  • Created Hydraulic Filter & Accumulator (part): "Filter and accumulator in the servo hydraulic system."

New: Circuit Breaker helicopter-circuit-breaker

  • Created Circuit Breaker (part): "Resettable breaker on the overhead or console panel."

New: Exterior Light helicopter-position-light

  • Created Exterior Light (part): "Position, anti-collision, landing or search light."

New: Pitot Tube & Heater helicopter-pitot-heater

  • Created Pitot Tube & Heater (part): "Heated pitot probe."

New: Antenna helicopter-antenna

  • Created Antenna (part): "VHF, GPS, transponder, ELT or radar altimeter antenna."

New: Transponder & ADS-B helicopter-transponder

  • Created Transponder & ADS-B (part): "Mode S transponder with ADS-B out."

New: Emergency Locator Transmitter helicopter-elt

  • Created Emergency Locator Transmitter (part): "Crash-activated distress beacon."

New: Audio Panel & Intercom helicopter-audio-panel

  • Created Audio Panel & Intercom (part): "Audio selector and intercom for crew and passengers."

New: Headset helicopter-headset

  • Created Headset (part): "Noise-attenuating headset with microphone."

New: Radar Altimeter helicopter-radar-altimeter

  • Created Radar Altimeter (part): "Radio altimeter for low-level flight."

New: Fuel Line helicopter-fuel-line

  • Created Fuel Line (part): "Rigid or flexible fuel line with fittings."

New: Fuel Quantity Probe helicopter-fuel-probe

  • Created Fuel Quantity Probe (part): "Capacitance probe in the tank."

New: Fuel Shutoff Valve helicopter-fuel-valve

  • Created Fuel Shutoff Valve (part): "Electrically operated firewall shutoff valve."

New: Skid Shoe helicopter-skid-shoe

  • Created Skid Shoe (part): "Replaceable wear shoe under the skid tube."

New: Skid Damper helicopter-skid-damper

  • Created Skid Damper (part): "Damper preventing ground resonance."

New: Ground Handling Wheel Fitting helicopter-ground-wheel-fitting

  • Created Ground Handling Wheel Fitting (part): "Fitting for the removable ground handling wheels."

New: Fire Extinguisher & First Aid Kit helicopter-fire-extinguisher

  • Created Fire Extinguisher & First Aid Kit (part): "Cabin fire extinguisher and first aid kit."

Fuselage helicopter-fuselage

  • Added helicopter-frame × 28
  • Added helicopter-stringer × 64
  • Added helicopter-rivet × 7200
  • Added helicopter-fairing × 12
  • Added helicopter-access-panel × 22
  • Added helicopter-latch × 60
  • Added helicopter-bonding-jumper × 40
  • Added helicopter-door-hardware × 4
  • Added helicopter-seat-belt × 5
  • Added helicopter-interior-trim × 20
  • Added helicopter-soundproofing × 24
  • Added helicopter-floor-panel × 8
  • Added helicopter-tie-down × 8
  • Added helicopter-horizontal-stabilizer × 1
  • Added helicopter-vertical-fin × 1
  • Added helicopter-tail-rotor-guard × 1
  • Added helicopter-hex-bolt × 900: "structural and equipment fasteners"
  • Added helicopter-hex-nut × 700
  • Added helicopter-washer × 900

Main Rotor System helicopter-main-rotor

  • Added helicopter-blade-bolt × 8
  • Added helicopter-elastomeric-bearing × 4
  • Added helicopter-droop-stop × 4
  • Added helicopter-rotor-brake × 1
  • Added helicopter-mast-bearing × 2
  • Added helicopter-hex-bolt × 60
  • Added helicopter-hex-nut × 60

Tail Rotor System helicopter-tail-rotor

  • Added helicopter-hanger-bearing × 5
  • Added helicopter-flex-coupling × 4
  • Added helicopter-hex-bolt × 40
  • Added helicopter-hex-nut × 40

Main Transmission / Gearbox helicopter-main-transmission

  • Added helicopter-transmission-mount × 4
  • Added helicopter-chip-detector × 3
  • Added helicopter-torque-sensor × 2
  • Added helicopter-hex-bolt × 48

Turboshaft Engine helicopter-engine

  • Added helicopter-compressor-blade × 210
  • Added helicopter-compressor-vane × 160
  • Added helicopter-turbine-blade × 96: "two stages"
  • Added helicopter-turbine-vane × 60
  • Added helicopter-fuel-nozzle × 12
  • Added helicopter-igniter × 2
  • Added helicopter-engine-mount × 3
  • Added helicopter-exhaust-duct × 1
  • Added helicopter-inlet × 1
  • Added helicopter-engine-oil-system × 1
  • Added helicopter-engine-sensor × 14
  • Added helicopter-engine-bolt × 260
  • Added Ball Bearing × 6: "shaft bearings"
  • Added Oil Seal × 6

Flight Control System helicopter-flight-controls

  • Added helicopter-control-rod × 24
  • Added helicopter-bellcrank × 16
  • Added helicopter-rod-end × 48
  • Added helicopter-hydraulic-line × 12
  • Added helicopter-trim-actuator × 3
  • Added helicopter-hydraulic-filter × 2
  • Added helicopter-hex-bolt × 120
  • Added helicopter-hex-nut × 120

Electrical System helicopter-electrical

  • Connector quantity 6 → 180
  • Added helicopter-wire × 1200
  • Added helicopter-crimp-terminal × 2400: "two per wire"
  • Added helicopter-circuit-breaker × 60
  • Added Relay × 20
  • Added helicopter-position-light × 7
  • Added helicopter-pitot-heater × 1
  • Added helicopter-antenna × 8
  • Added helicopter-cable-tie × 360

Avionics & Cockpit Suite helicopter-avionics

  • Added helicopter-transponder × 1
  • Added helicopter-elt × 1
  • Added helicopter-audio-panel × 1
  • Added helicopter-headset × 5
  • Added helicopter-radar-altimeter × 1
  • Added Connector × 40

Fuel System helicopter-fuel-system

  • Added helicopter-fuel-line × 8
  • Added helicopter-fuel-probe × 2
  • Added helicopter-fuel-valve × 1
  • Added helicopter-hex-bolt × 24

Landing Skid Gear helicopter-landing-skids

  • Added helicopter-skid-shoe × 4
  • Added helicopter-skid-damper × 2
  • Added helicopter-ground-wheel-fitting × 2
  • Added helicopter-hex-bolt × 32

Helicopter helicopter

  • Added helicopter-fire-extinguisher × 1

Machine findings

  • Fuselage: 25 direct children (dominant function: Fasten or join) — worth checking for integration or standardization
  • Turboshaft Engine: 21 direct children (dominant function: Convert energy) — worth checking for integration or standardization
  • Flight Control System: 13 direct children (dominant function: Human interface) — worth checking for integration or standardization
  • Main Rotor System: 12 direct children (dominant function: Process material) — worth checking for integration or standardization
  • Electrical System: 12 direct children (dominant function: Connect electrically) — worth checking for integration or standardization
  • Helicopter: 11 direct children (dominant function: Transmit motion) — worth checking for integration or standardization
  • Main Transmission / Gearbox: 11 direct children (dominant function: Sense or measure) — worth checking for integration or standardization
  • Avionics & Cockpit Suite: 11 direct children (dominant function: Communicate signal) — worth checking for integration or standardization
  • Tail Rotor System: 8 direct children (dominant function: Transmit motion) — worth checking for integration or standardization
  • Fuel System: 8 direct children (dominant function: Store energy) — worth checking for integration or standardization
  • Landing Skid Gear: 7 direct children (dominant function: Fasten or join) — worth checking for integration or standardization
  • Helicopter functions after this change: Support structure, Connect electrically, Fasten or join
  • Fuse functions after this change: Process material