Приложения разработчика Graham Dyer в Android Market

CG Calc (v. 2.2)

Graham Dyer опубликовал приложение 2012-09-02
(обновлено 2014-09-26)

RC Model Aircraft Center of Gravity Calculator v2.2 (replaces v1.x)

(Note: please email if you have a problem or suggestion)

This may prevent your plane from crashing!

Measure and enter the tip chord length, the root chord length, the sweep length and YOUR required CG percentage (eg 25%) of your model airplane wing.

This app will calculate the POSITION of the Center of Gravity (CG or CoG or Balance Point) measured back from the leading edge at the wing root.

You can use inches, centimeters or millimeters.

A too rearward CG position can cause unrecoverable (sometimes fatal) instability!

25-30% recommended for most conventional wings, 12-18% for delta wings.

Please see also my RC-E Calculator which includes wing loading, flight time, prop thrust and other calculators:
<p>
<a href="https://play.google.com/store/apps/details?id=appinventor.ai_graham_dyer.RC_Ecalc_Pro&">
► RC E Calc Pro</a></p>


(This app requires the following permissions:
android.permission.INTERNET - to check for updates and so that the screen's background image property can be set to the URL of an image on the web if there is a background image
android.permission.WRITE_EXTERNAL_STORAGE - to move the app to EXT SD on your phone if neccessary.
android.permission.READ_PHONE_STATE - to check for incoming phone calls and then hide the app if neccessary.
android.permission.READ_EXTERNAL_STORAGE - access the app on EXT SD if neccessary.)

RCECalc (v. 1.1)

Graham Dyer опубликовал приложение 2011-05-19
(обновлено 2011-05-19)

RC Electric Calc v1.1 - A calculator for Radio Control (RC or R/C) electric powered model airplanes/helicopters using Lithium Polymer (LiPo) batteries. (Please also see the new, improved, feature-rich version 2.0: https://play.google.com/store/apps/details?id=appinventor.ai_graham_dyer.RC_Ecalc_Pro&)

(Please Note: EMAIL me if you have a problem, I CAN NOT respond to comments)

Calculate the following:
- Average Current Used (after battery recharge).
- Average Discharge Rate (C-rate).
- Expected Flight Time from a particular battery.
- Power in Watts (from Volts & Amps).
- Static thrust of a propeller in pounds or kilograms.

Disclaimer: This is not intended to be scientifically accurate, rather as an aproximate guide for when you're at the flying field.

Comments & suggestions (& donations) very welcome

Check out my CG Calculator v2 too, search for CG Calc.

(This app requires the following permissions:
android.permission.INTERNET - to check for updates
android.permission.WRITE_EXTERNAL_STORAGE - to move the app to EXT SD on your phone if neccessary.
android.permission.READ_PHONE_STATE - to check for phone calls while the app is running.
android.permission.READ_EXTERNAL_STORAGE - to move the app to INT storage if neccessary.)

* After you've recharged the battery use the mAh you put back into the battery with your charger.

** Thank you very much to the donaters for supporting this app!

CG Calc v1 (v. 1.1.2)

Graham Dyer опубликовал приложение 2010-12-22
(обновлено 2010-12-22)

This version = v1.x = DISCONTINUED

Please download RC Model Aircraft Center of Gravity Calculator v2.

RC Model Aircraft Center of Gravity Calculator v1.1 (Old)

This may prevent your plane from crashing!

You enter YOUR required CG percentage (ie 25%), measure and enter the tip chord, the root chord and the sweep of a model  plane and it will calculate the POSITION of the Center of Gravity (CG or COG) measured back from the leading edge at the wing root. Measured in inches, cm or mm.