• Update Membership System V5.3/2.1

• SSL / https: usage of Secured Server Certificate - please change your bookmark to https://... to use secured connection.
• Service Update (share initiates a reload of the page, export thrust@speed, motor search works now with MS Edge too)
• new: Swedish translation available
• eCalc - easy: Prop-KV-Wizard available, transfering settings from/to expert view
• xcopterCalc - easy: Final Release

• eCalc uses now encrypted HTTPS only. The main motivation for HTTPS is authentication of eCalc's website and protection of the privacy and integrity of the exchanged data.

• Update Membership System V5.1/2.0

• Service Update
• automatic detection of language according system settings if parameter "lang" is not set.
• Output of Wattmeter and Logger readings
• Thermal model refined for improved temperature prediction of large motors
• link to Toolbox inserted
• propCalc: Estimated speed in level flight added to the Motor Partial Load table
• propCalc - easy: Final Release V1.00. Complete removal of Gauges if google widgets not available (e.g. in china)
• xcopterCalc - easy: Beta Version of a basic calculator. The easy view calculates a subset of the known (expert) eCalc and is more convenient to use on devices with small displays like smartphones
• eCalc - easy: in-App capability added (for commercial users)

cgCalc Version 1.03 released (german translation) - to cgCalc

xcopterCalc & heliCalc Hot Fix - underpowered copter did not show a result - problem solved.

cgCalc Version 1.02 released (Canard calculation problem with large canard solved) - to cgCalc

cgCalc Version 1.0 released - to cgCalc

wingDesigner⁴ Version 1.0 released - to wingDesigner⁴

wingDesigner Version 1.0 released - to wingDesigner

• xcopterCalc: Hot Fix - White labeling for partners (Range Esimator) corrected

• Service Update with korean language
• Usabiity: Remarks will be color coded - critical = red / informational = blue
• xcopterCalc: Range Estimator, Copter Visualization (Wizard & Gauge Bar), calculation of Total Disc Area
• propCalc: New remark for hard hand launching and unable to maintain vertical climb speed
• propCalc - easy: Beta Version of a basic calculator. The easy view calculates a subset of the known (expert) eCalc and is more convenient to use on devices with small displays like smartphones phones.

• Update Membership System V4.6/2.0

• Server migration for future requirements

• Service Update (cursor wait, unified source code language)
• All Calculators: improved search, max. discharge range now 10%...100%
• xcopterCalc: Prop Dimensions as well in mm, new Power-Weight-Ratio [W/kg, W/lbs] for maximum and hover, max Speed now based on max AUW rpm, improved rotor failure prediction for coax configuration.
• propCalc: Prop Dimensions as well in mm

• Service Update
• xcopterCalc: refined calculation modell for coaxial multicopter improves hover and flight time values

• Service Update (usability improved:automatic Project Name selection, Component Selection in Demo will be transfered when logging in)
• All Calculators: the capacity discharge percentage for flight time calculations is not anymore fix 85%. It may be selected between 70%...100%. All flight times are now based on "used capacity" (=Discharged % of total capacity)
• propCalc: new Prop-Kv-Wizard helps to find a resonable Prop Pitch / Motor KV combination even faster,
  Search a specific motor directly from the Prop-KV-Wizard
• xcopterCalc: definition for accessories (e.g. camera) regarding weight and current consumption if supplied by flight battery,
  Prop-KV-Wizard calculates additionaly required power and ESC size,
  Search a specific motor directly from the Prop-KV-Wizard
• propCalc, fanCalc: Considering wiring extension
• heliCalc: Mixed Flight Time is based on geometric mean value (not anymor on arithmetic mean value)

• Service release
• All Calculators: The Demo Version will show up with all components, but ~75% will be disabled. Nevertheless to new user it's even more convenient to check the required component is already in the database.

• Bug Fix for users with restricted access to Google. The new Quick Check Gauges uses Google Widgets. As some countries (e.g. china) do restrict the access to Google the Quick Check Gauges are not available within those countries - sorry.
• Bug Fix for motors fitted with a gear box x.xx:1 (were shown as 0.xx:1 instead of x.xx:1)

• Service Update
• Introduction of Quick Check Gauges for a quick overview
• share finction (in stad of generateLink)
• propCalc: Motor Partial Load Table formating (grey below stall, bold at max. efficiency)
• xcopterCalc: introduction of Thrust-Weigh-Ratio

• Service Update, new with italian translation
• Define a Project Name
• Calculation export to CSV-File (readable with Excel or other spreadsheed software)
• xcopterCalc: the warning regarding the "propeller blade stall" depends now also on the disc load. The warnung apears for a pitch to diameter ratio between 0.667 for medium to heavy copters and ~0.9 for very light weight race copters, definition of the tilt limitation of the FCU for better estimate of the max. forward speed in level flight
• heliCalc: Hover Calculation with a defined constant Headspeed

• Service Update
• all Calculators: refined Motormodel for even more accurate efficency.
• xcopterCalc:
  - Engine Failure Prediction for Coax-Configuration
  - acheavable vertical climb rate
  - refined Throttle Calculation with better accurarcy below 60%
  - hover rpm calculation
  - Propeller - KV - Wizard
• propCalc: Partial Motor Load Table

• Service Update
• all Calculators: Calculation of Battery energy, new language: dutch
• xcopterCalc: Introduction of Coax Calculation final version, Engine Failure Prediction - resistent, controlable, uncontrolable
• propCalc, fanCalc: Thrust at a specific Flight Speed, estimates for max speed in level flight, for vertical flight and max rate of climb, Speed for undue Prop Stall
  new calculation for mixed flight time - not anymore based on on half max current, it's now based on the Thrust-Weight-Ratio