PHPackages                             bjoernffm/e6b - PHPackages - PHPackages  [Skip to content](#main-content)[PHPackages](/)[Directory](/)[Categories](/categories)[Trending](/trending)[Leaderboard](/leaderboard)[Changelog](/changelog)[Analyze](/analyze)[Collections](/collections)[Log in](/login)[Sign up](/register)

1. [Directory](/)
2. /
3. bjoernffm/e6b

ActiveLibrary

bjoernffm/e6b
=============

E6-B flight computer emulation

1.4(7y ago)220[1 PRs](https://github.com/bjoernffm/e6b/pulls)MITPHPPHP >=5.6.0CI failing

Since Jan 6Pushed 6y ago1 watchersCompare

[ Source](https://github.com/bjoernffm/e6b)[ Packagist](https://packagist.org/packages/bjoernffm/e6b)[ Docs](https://github.com/bjoernffm/e6b)[ RSS](/packages/bjoernffm-e6b/feed)WikiDiscussions master Synced 2d ago

READMEChangelog (3)Dependencies (1)Versions (11)Used By (0)

E6-B Calculator Emulation
=========================

[](#e6-b-calculator-emulation)

[![Build Status](https://camo.githubusercontent.com/8ca9ed6b9adfdfc7b91151916b87adfc23e8ac623fbae7a76f264470487fe756/68747470733a2f2f7472617669732d63692e6f72672f626a6f65726e66666d2f6536622e7376673f6272616e63683d6d6173746572)](https://travis-ci.org/bjoernffm/e6b)[![StyleCI](https://camo.githubusercontent.com/ba8f402c6dc9d6c7d944a043d4f7f37b2429958fce0708ee727ec987e0cf7837/68747470733a2f2f6769746875622e7374796c6563692e696f2f7265706f732f39343631323839392f736869656c643f7374796c653d666c6174266272616e63683d6d6173746572)](https://github.styleci.io/repos/94612899)[![Codacy Badge](https://camo.githubusercontent.com/08de3ba6e5327439ae97f9c9813f8e40be699192b483e14f95dea219dd03479a/68747470733a2f2f6170692e636f646163792e636f6d2f70726f6a6563742f62616467652f47726164652f6537663734333334313062633434313262383739396130383761613133653734)](https://www.codacy.com/manual/bjoernffm/e6b)

This class provides a first and very basic version of an ordinary E6-B flight computer also nicknamed the "whiz wheel".

An E6-B calculator is a form of circular slide rule used in aviation and one of a very few analog computers in widespread use in the 21st century.

Usage
-----

[](#usage)

Imagine we want to fly a course of 220 degrees having a true airspeed of 110 kts. Wind comes from a direction of 270 degrees with a speed of 25 kts. So what's the resulting angle of correction, heading and groundspeed?

```