E6B Calculator: Wind Triangle and Flight Fuel Planner
Convert CAS to TAS, solve wind correction and groundspeed for up to three legs, and budget alternate fuel and reserves. Includes an animated wind triangle. Aviation training only.
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Convert CAS to TAS, solve wind correction and groundspeed for up to three legs, and budget alternate fuel and reserves. Includes an animated wind triangle. Aviation training only.
Size a five-segment duct tree by equal friction, calculate fitting and balancing losses, and match the system to a blower curve. Supports round and rectangular ducts.
Estimate appliance kWh, electricity units and bills from your own flat or slab rates. Compare fridge and inverter AC replacements using labels, duty cycles or seasonal ratings.
Estimate bricks or AAC blocks, cement bags and sand after deducting openings. Compare mortar, wall weight and your material costs with regional sizes and custom dimensions.
Check gravity and cantilever retaining walls for sliding, overturning and base bearing. Compare Rankine or Coulomb pressure, surcharge, groundwater and uplift.
Estimate bicycle chain links, check derailleur capacity, and compare gear inches, development and speed. Includes single-speed adjustment and a wrapped-chain schematic.
Build a house load schedule, balance single-phase circuits, and estimate demand, main breaker and supply kVA. Compare editable IEC-style factors with the NEC 220.82 optional-method structure.
Calculate steel bar weight and schedules for slabs, beams and columns. Get steel lengths per run, run/link counts, shape sketches and mass by diameter with editable detailing allowances.
Calculate displacement, static and dynamic compression ratios, and a boost comparison index. Explore gasket and head-milling changes with an animated cylinder section.
Estimate turkey roasting or brisket smoking time with conduction, evaporation, foil wrapping and carryover. Animate the temperature through a measured meat section.
Convert roof pitch and angles, calculate common and hip or valley rafter lengths, and lay out ridge, tail and birdsmouth cuts with a drawn cut sheet and animated assembly.
Compare DOL, star-delta, soft-starter and autotransformer starts. Estimate motor current, torque, acceleration time and supply dip, then check feeder drop and overload settings.
Calculate balanced three-phase kW, kVA and amps, convert motor hp, and solve unbalanced star or delta loads with neutral-current phasors and animated waveforms.
Calculate pulley ratio and RPM, belt length, adjusted centre distance, wrap, belt count and static shaft pull. Compare fan performance after a pulley change.
Match a PSC motor run capacitor or estimate its 90° current-split target from winding impedances. Compare µF, AC voltage ratings and animated winding-current phasors.
Compare printed shells and infill for load, stiffness and material use. Screening loads include a deflection limit; published benchmarks show where the model overpredicts.
Calculate concrete volume, whole bags, ready-mix orders and rebar grids. Estimate daily strength gain at the curing temperature and dates for your strength targets.
Estimate cement bags, sand, aggregate and free water for small nominal-mix concrete pours. Includes geometry, wastage, loose-volume recipes and metric/US results.
Size copper cables and DC fuses for inverters, solar battery circuits and car audio. Check voltage drop, thermal derating, fault interruption and alternator capacity.
Calculate Euler buckling load, Johnson intermediate-column strength and effective length for four end conditions. Explore steel, aluminium and timber presets, eccentric loading and animated buckling modes.
Trace slab, wall and beam loads through a house column grid. Estimate storey axial loads, short-column steel demand and footing area for preliminary planning.
Simulate seven days of power cuts and charging. See whether your inverter or IPS battery still covers day 3, with charger limits, charge taper and lead-acid or LiFePO₄ behaviour.
Size a portable power station from a timed load list. Check usable energy, startup surge, expansion batteries and wall, car or solar recharge limits.
Size battery backup and solar panels for a fridge, freezer or mini-split. Check compressor starting capacity and explore daily PV, cycling loads and battery charge.
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