diff --git a/ChangeLog.md b/ChangeLog.md
index 1bb56d58..9bf715ac 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,11 @@
+#2.2.9
+  * Use SSL-enabled server for shortlinks
+  * Add falloff for weapons
+  * Use falloff when calculating weapon effectiveness in damage dealt
+  * Add engagement range slider to 'Damage Dealt' section to allow user to see change in weapon effectiveness with range
+  * Use better DPE calculation methodology
+  * Add total DPS and effectiveness information to 'Damage Dealt' section
+
 #2.2.8
   * Fix issue where filling all internals with cargo racks would include restricted slots
   * Use coriolis-data 2.2.8:
diff --git a/src/app/components/DamageDealt.jsx b/src/app/components/DamageDealt.jsx
index 01ba84b2..eb27dc20 100644
--- a/src/app/components/DamageDealt.jsx
+++ b/src/app/components/DamageDealt.jsx
@@ -4,6 +4,7 @@ import { Ships } from 'coriolis-data/dist';
 import ShipSelector from './ShipSelector';
 import { nameComparator } from '../utils/SlotFunctions';
 import { CollapseSection, ExpandSection, MountFixed, MountGimballed, MountTurret } from './SvgIcons';
+import Slider from '../components/Slider';
 
 /**
  * Generates an internationalization friendly weapon comparator that will
@@ -66,7 +67,9 @@ export default class DamageDealt extends TranslatedComponent {
       predicate: 'n',
       desc: true,
       against: DamageDealt.DEFAULT_AGAINST,
-      expanded: false
+      expanded: false,
+      range: 0.1667,
+      maxRange: 6000
     };
   }
 
@@ -74,8 +77,8 @@ export default class DamageDealt extends TranslatedComponent {
    * Set the initial weapons state
    */
   componentWillMount() {
-    const weapons = this._calcWeapons(this.props.ship, this.state.against);
-    this.setState({ weapons });
+    const data = this._calcWeapons(this.props.ship, this.state.against, this.state.range * this.state.maxRange);
+    this.setState({ weapons: data.weapons, totals: data.totals });
   }
 
   /**
@@ -86,8 +89,8 @@ export default class DamageDealt extends TranslatedComponent {
    */
   componentWillReceiveProps(nextProps, nextContext) {
     if (nextProps.code != this.props.code) {
-      const weapons = this._calcWeapons(this.props.ship, this.state.against);
-      this.setState({ weapons });
+      const data = this._calcWeapons(this.props.ship, this.state.against, this.state.range * this.state.maxRange);
+      this.setState({ weapons: data.weapons, totals: data.totals });
     }
     return true;
   }
@@ -96,30 +99,61 @@ export default class DamageDealt extends TranslatedComponent {
    * Calculate the damage dealt by a ship
    * @param  {Object} ship        The ship which will deal the damage 
    * @param  {Object} against     The ship against which damage will be dealt
+   * @param  {Object} range       The engagement range
    * @return {boolean}            Returns the per-weapon damage
    */
-  _calcWeapons(ship, against) {
-    let weapons = [];
+  _calcWeapons(ship, against, range) {
+    // Tidy up the range so that it's to 4 decimal places
+    range = Math.round(10000 * range) / 10000;
 
+    // Track totals
+    let totals = {};
+    totals.effectiveness = 0;
+    totals.effectiveDps = 0;
+    totals.effectiveSDps = 0;
+    let totalDps = 0;
+
+    let weapons = [];
     for (let i = 0; i < ship.hardpoints.length; i++) {
       if (ship.hardpoints[i].m) {
         const m = ship.hardpoints[i].m;
-        const classRating = `${m.class}${m.rating}${m.missile ? '/' + m.missile : ''}`;
-        const effectiveness = m.getPiercing() >= against.properties.hardness ? 1 : m.getPiercing() / against.properties.hardness;
-        const effectiveDps = m.getDps() * effectiveness;
-        const effectiveSDps = m.getClip() ?  (m.getClip() * m.getDps() / m.getRoF()) / ((m.getClip() / m.getRoF()) + m.getReload()) * effectiveness : effectiveDps;
+        if (m.getDamage() && m.grp !== 'po') {
+          let dropoff = 1;
+          if (m.getFalloff()) {
+            // Calculate the dropoff % due to range
+            if (range > m.getRange()) {
+              // Weapon is out of range
+              dropoff = 0;
+            } else {
+              const falloff = m.getFalloff();
+              if (range > falloff) {
+                const dropoffRange = m.getRange() - falloff;
+                // Assuming straight-line falloff
+                dropoff = 1 - (range - falloff) / dropoffRange;
+              }
+            }
+          }
+          const classRating = `${m.class}${m.rating}${m.missile ? '/' + m.missile : ''}`;
+          const effectiveness = (m.getPiercing() >= against.properties.hardness ? 1 : m.getPiercing() / against.properties.hardness) * dropoff;
+          const effectiveDps = m.getDps() * effectiveness * dropoff;
+          const effectiveSDps = (m.getClip() ?  (m.getClip() * m.getDps() / m.getRoF()) / ((m.getClip() / m.getRoF()) + m.getReload()) * effectiveness : effectiveDps) * dropoff;
+          totals.effectiveDps += effectiveDps;
+          totals.effectiveSDps += effectiveSDps;
+          totalDps += m.getDps();
 
-        weapons.push({ id: i,
-                       mount: m.mount,
-                       name: m.name || m.grp,
-                       classRating,
-                       effectiveDps,
-                       effectiveSDps,
-                       effectiveness });
+          weapons.push({ id: i,
+                         mount: m.mount,
+                         name: m.name || m.grp,
+                         classRating,
+                         effectiveDps,
+                         effectiveSDps,
+                         effectiveness });
+        }
       }
     }
-
-    return weapons;
+    totals.effectiveness = totals.effectiveDps / totalDps;
+    
+    return {weapons: weapons, totals: totals};
   }
 
   /**
@@ -135,8 +169,8 @@ export default class DamageDealt extends TranslatedComponent {
    */
   _onShipChange(s) {
     const against = Ships[s];
-    const weapons = this._calcWeapons(this.props.ship, against);
-    this.setState({ against, weapons });
+    const data = this._calcWeapons(this.props.ship, against);
+    this.setState({ against, weapons: data.weapons, totals: data.totals });
   }
 
   /**
@@ -208,14 +242,23 @@ export default class DamageDealt extends TranslatedComponent {
     return rows;
   }
 
+  /**
+   * Update current range
+   * @param  {number} range Range 0-1
+   */
+  _rangeChange(range) {
+    const data = this._calcWeapons(this.props.ship, this.state.against, this.state.range * this.state.maxRange);
+    this.setState({ range, weapons: data.weapons, totals: data.totals });
+  }
+
   /**
    * Render damage dealt
    * @return {React.Component} contents
    */
   render() {
-    const { language, tooltip, termtip } = this.context;
-    const { formats, translate } = language;
-    const { expanded } = this.state;
+    const { language, onWindowResize, sizeRatio, tooltip, termtip } = this.context;
+    const { formats, translate, units } = language;
+    const { expanded, maxRange, range, totals } = this.state;
 
     const sortOrder = this._sortOrder;
     const onCollapseExpand = this._onCollapseExpand;
@@ -227,16 +270,45 @@ export default class DamageDealt extends TranslatedComponent {
         <ShipSelector initial={this.state.against} currentMenu={this.props.currentMenu} onChange={this._onShipChange} />
         <table className='summary' style={{ width: '100%' }}>
           <thead>
-          <tr className='main'>
-            <td className='sortable' onClick={sortOrder.bind(this, 'n')}>{translate('weapon')}</td>
-            <td className='sortable' onClick={sortOrder.bind(this, 'edps')}>{translate('effective dps')}</td>
-            <td className='sortable' onClick={sortOrder.bind(this, 'esdps')}>{translate('effective sdps')}</td>
-            <td className='sortable' onClick={sortOrder.bind(this, 'e')}>{translate('effectiveness')}</td>
-          </tr>
+            <tr className='main'>
+              <td className='sortable' onClick={sortOrder.bind(this, 'n')}>{translate('weapon')}</td>
+              <td className='sortable' onClick={sortOrder.bind(this, 'edps')}>{translate('effective dps')}</td>
+              <td className='sortable' onClick={sortOrder.bind(this, 'esdps')}>{translate('effective sdps')}</td>
+              <td className='sortable' onClick={sortOrder.bind(this, 'e')}>{translate('effectiveness')}</td>
+            </tr>
           </thead>
           <tbody>
             {this._renderRows(translate, formats)}
           </tbody>
+          <tfoot>
+            <tr className='main'>
+              <td className='ri'><i>{translate('total')}</i></td>
+              <td className='ri'><i>{formats.round1(totals.effectiveDps)}</i></td>
+              <td className='ri'><i>{formats.round1(totals.effectiveSDps)}</i></td>
+              <td className='ri'><i>{formats.pct(totals.effectiveness)}</i></td>
+            </tr>
+          </tfoot>
+        </table>
+        <table style={{ width: '80%', lineHeight: '1em', backgroundColor: 'transparent', margin: 'auto' }}>
+          <tbody >
+            <tr>
+              <td style={{ verticalAlign: 'top', padding: 0, width: '2.5em' }} onMouseEnter={termtip.bind(null, 'PHRASE_ENGAGEMENT_RANGE')} onMouseLeave={tooltip.bind(null, null)}>{translate('engagement range')}</td>
+              <td>
+                <Slider
+                  axis={true}
+                  onChange={this._rangeChange.bind(this)}
+                  axisUnit={translate('m')}
+                  percent={range}
+                  max={maxRange}
+                  scale={sizeRatio}
+                  onResize={onWindowResize}
+                />
+              </td>
+              <td className='primary' style={{ width: '10em', verticalAlign: 'top', fontSize: '0.9em', textAlign: 'left' }}>
+                {formats.f2(range * maxRange / 1000)}{units.km}
+              </td>
+            </tr>
+          </tbody>
         </table></span> : null }
       </span>
     );
diff --git a/src/app/components/HardpointSlot.jsx b/src/app/components/HardpointSlot.jsx
index cc1d80ac..e4d75d6e 100644
--- a/src/app/components/HardpointSlot.jsx
+++ b/src/app/components/HardpointSlot.jsx
@@ -74,6 +74,7 @@ export default class HardpointSlot extends Slot {
           { m.getDps() && m.getEps() ? <div className={'l'} onMouseOver={termtip.bind(null, 'dpe')} onMouseOut={tooltip.bind(null, null)}>{translate('DPE')}: {formats.f1(m.getDps() / m.getEps())}</div> : null }
           { m.getRoF() ? <div className={'l'} onMouseOver={termtip.bind(null, 'rof')} onMouseOut={tooltip.bind(null, null)}>{translate('ROF')}: {formats.f1(m.getRoF())}{u.ps}</div> : null }
           { m.getRange() ? <div className={'l'}>{translate('range')} {formats.f1(m.getRange() / 1000)}{u.km}</div> : null }
+          { m.getFalloff() ? <div className={'l'}>{translate('falloff')} {formats.f1(m.getFalloff() / 1000)}{u.km}</div> : null }
           { m.getShieldBoost() ? <div className={'l'}>+{formats.pct1(m.getShieldBoost())}</div> : null }
           { m.getAmmo() ? <div className={'l'}>{translate('ammunition')}: {formats.int(m.getClip())}/{formats.int(m.getAmmo())}</div> : null }
           { m.getPiercing() ? <div className={'l'}>{translate('piercing')}: {formats.int(m.getPiercing())}</div> : null }
diff --git a/src/app/components/ModificationsMenu.jsx b/src/app/components/ModificationsMenu.jsx
index f38c8b1e..1a56180f 100644
--- a/src/app/components/ModificationsMenu.jsx
+++ b/src/app/components/ModificationsMenu.jsx
@@ -39,7 +39,9 @@ export default class ModificationsMenu extends TranslatedComponent {
     let list = [];
 
     for (let modName of Modifications.validity[m.grp]) {
-      list.push(<Modification key={ modName } ship={ ship } m={ m } name={ modName } onChange={ onChange }/>);
+      if (Modifications.modifications[modName].type != 'hidden') {
+        list.push(<Modification key={ modName } ship={ ship } m={ m } name={ modName } onChange={ onChange }/>);
+      }
     }
 
     return { list };
diff --git a/src/app/i18n/en.js b/src/app/i18n/en.js
index 0d0496de..091cb560 100644
--- a/src/app/i18n/en.js
+++ b/src/app/i18n/en.js
@@ -28,6 +28,7 @@ export const terms = {
   PHRASE_SG_RECOVER: 'Recovery (to 50%) after collapse',
   PHRASE_UNLADEN: 'Ship mass excluding fuel and cargo',
   PHRASE_UPDATE_RDY: 'Update Available! Click to refresh',
+  PHRASE_ENGAGEMENT_RANGE: 'The distance between your ship and its target',
 
   HELP_MODIFICATIONS_MENU: 'Click on a number to enter a new value, or drag along the bar for small changes',
 
@@ -123,6 +124,8 @@ export const terms = {
   'yaw': 'Yaw',
   'internal protection': 'Internal protection',
   'external protection': 'External protection',
+  'engagement range': 'Engagement range',
+  'total': 'Total',
 
   // Modifications
   ammo: 'Ammunition maximum',
diff --git a/src/app/shipyard/Module.js b/src/app/shipyard/Module.js
index 37879de6..36911b33 100755
--- a/src/app/shipyard/Module.js
+++ b/src/app/shipyard/Module.js
@@ -286,6 +286,20 @@ export default class Module {
     return this._getModifiedValue('range');
   }
 
+  /**
+   * Get the falloff for this module, taking in to account modifications
+   * @return {Number} the falloff of this module
+   */
+  getFalloff() {
+    if (this.getModValue('fallofffromrange')) {
+      return this.getRange();
+    } else {
+      const falloff = this._getModifiedValue('falloff');
+      const range = this.getRange();
+      return (falloff > range ? range : falloff);
+    }
+  }
+
   /**
    * Get the range (in terms of seconds, for FSDI) for this module, taking in to account modifications
    * @return {Number} the range of this module
diff --git a/src/app/shipyard/Ship.js b/src/app/shipyard/Ship.js
index 7a5313a5..1342ff20 100755
--- a/src/app/shipyard/Ship.js
+++ b/src/app/shipyard/Ship.js
@@ -947,51 +947,27 @@ export default class Ship {
     for (let slotNum in this.hardpoints) {
       const slot = this.hardpoints[slotNum];
       if (slot.m && slot.enabled && slot.m.getDps()) {
-        const dpe = slot.m.getDps() / slot.m.getEps();
+        const dpe = slot.m.getEps() === 0 ? 0 : slot.m.getDps() / slot.m.getEps();
         const dps = slot.m.getDps();
         const sdps = slot.m.getClip() ? (slot.m.getClip() * slot.m.getDps() / slot.m.getRoF()) / ((slot.m.getClip() / slot.m.getRoF()) + slot.m.getReload()) : dps;
 
         totalDpe += dpe;
         totalDps += dps;
         totalSDps += sdps;
-        if (slot.m.getDamageType() === 'E') {
-          totalExplDpe += dpe;
-          totalExplDps += dps;
-          totalExplSDps += sdps;
+        if (slot.m.getDamageType().indexOf('E') != -1) {
+          totalExplDpe += dpe / slot.m.getDamageType().length;
+          totalExplDps += dps / slot.m.getDamageType().length;
+          totalExplSDps += sdps / slot.m.getDamageType().length;
         }
-        if (slot.m.getDamageType() === 'K') {
-          totalKinDpe += dpe;
-          totalKinDps += dps;
-          totalKinSDps += sdps;
+        if (slot.m.getDamageType().indexOf('K') != -1) {
+          totalKinDpe += dpe / slot.m.getDamageType().length;
+          totalKinDps += dps / slot.m.getDamageType().length;
+          totalKinSDps += sdps / slot.m.getDamageType().length;
         }
-        if (slot.m.getDamageType() === 'T') {
-          totalThermDpe += dpe;
-          totalThermDps += dps;
-          totalThermSDps += sdps;
-        }
-        if (slot.m.getDamageType() === 'EK') {
-          totalExplDpe += dpe / 2;
-          totalKinDpe += dpe / 2;
-          totalExplDps += dps / 2;
-          totalKinDps += dps / 2;
-          totalExplSDps += sdps / 2;
-          totalKinSDps += sdps / 2;
-        }
-        if (slot.m.getDamageType() === 'ET') {
-          totalExplDpe += dpe / 2;
-          totalThermDpe += dpe / 2;
-          totalExplDps += dps / 2;
-          totalThermDps += dps / 2;
-          totalExplSDps += sdps / 2;
-          totalThermSDps += sdps / 2;
-        }
-        if (slot.m.getDamageType() === 'KT') {
-          totalKinDpe += dpe / 2;
-          totalThermDpe += dpe / 2;
-          totalKinDps += dps / 2;
-          totalThermDps += dps / 2;
-          totalKinSDps += sdps / 2;
-          totalThermSDps += sdps / 2;
+        if (slot.m.getDamageType().indexOf('T') != -1) {
+          totalThermDpe += dpe / slot.m.getDamageType().length;
+          totalThermDps += dps / slot.m.getDamageType().length;
+          totalThermSDps += sdps / slot.m.getDamageType().length;
         }
       }
     }
diff --git a/src/app/utils/CompanionApiUtils.js b/src/app/utils/CompanionApiUtils.js
index 11030548..234ed48d 100644
--- a/src/app/utils/CompanionApiUtils.js
+++ b/src/app/utils/CompanionApiUtils.js
@@ -305,6 +305,9 @@ function _addModifications(module, modifiers, blueprint, grade) {
     } else if (modifiers.modifiers[i].name === 'mod_weapon_burst_rof') {
       // For some reason this is a non-normalised percentage (i.e. 12.23% is 12.23 value rather than 0.1223 as everywhere else), so fix that here
       module.setModValue('burstrof', modifiers.modifiers[i].value * 100);
+    } else if (modifiers.modifiers[i].name === 'mod_weapon_falloffrange_from_range') {
+      // Obtain the falloff value directly from the range
+      module.setModValue('fallofffromrange', 1);
     } else {
       // Look up the modifiers to find what we need to do
       const modifierActions = Modifications.modifierActions[modifiers.modifiers[i].name];
diff --git a/src/app/utils/ShortenUrl.js b/src/app/utils/ShortenUrl.js
index ca7f05b4..e2f59614 100644
--- a/src/app/utils/ShortenUrl.js
+++ b/src/app/utils/ShortenUrl.js
@@ -38,7 +38,7 @@ function shortenUrlGoogle(url, success, error) {
   }
 }
 
-const SHORTEN_API_EDDP = 'http://eddp.co/u';
+const SHORTEN_API_EDDP = 'https://eddp.co/u';
 /**
  * Shorten a URL using EDDP's URL shortener API
  * @param  {string} url        The URL to shorten