<?xml version="1.0" ?>
<!--
  File:     WrightGR-2600.xml
  Author:   Aero-Matic v 0.7
  Date:     14 August 2005
  Version   1.1

  Inputs:
    name:           WrightGR-2600
    type:           piston
    power:          1600.0 hp
    augmented?      no
    injected?       no


  References :
  ==========
  - http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/MainFrame?OpenFrameSet
  (FAA certificate, TC704 - 25 january 1939, B-314) :

  Engine limits : * maximum except take-off (straight line manifold pressure variation) : 33.2 in. hg. 2100 rpm (1200 hp)
                  at 5400 ft, 35.0 in. hg. 2100 rpm (1200 hp) at sea level.
                  * take-off (2 minutes), 42.5 in. hg. 2400 rpm (1550 hp).

  - http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/MainFrame?OpenFrameSet
  (FAA certificate, TC704 - 2 may 1941 B-314A) :

  Engine limits : * maximum except take-off (straight line manifold pressure variation) : 35.8 in. hg. 2300 rpm (1350 hp)
                  at 6200 ft, 37.5 in. hg. 2300 rpm (1350 hp) at sea level.
                  * take-off (2 minutes), 43.5 in. hg. 2400 rpm (1600 hp).

  - http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/MainFrame?OpenFrameSet
  (FAA certificate, TC176 - Wright Double row Cyclone GR-260025) :

  Displacement : 2603 cu. in.

-->

<!-- choiced an engine of B-314A. -->

<piston_engine name="Wright Double Row Cyclone GR-2600 709C14AC1">

<!-- fakes displacement (2603) to increase the consumption and match the range :

     - one cannot change the volumetric efficiency.

     - in the FAA certificate the fuel capacity of 314A is 5688 gallons where 1 gallon = 6 lb !

     - the economic cruise speed is 110 kt indicated, or 130 kt true (KSFO - PHNL 2080 NM / 16 h),
     that is a range of 34.75 h = 5200 miles / 130 kt,
     or 5688 US gal / 34.75 h = 164 gallons/h for all engines, or 41 gallons/h per engine.

     The 314A (314) was unable to reach 5200 (3500) miles at the cruise speed of 160 kt.
-->

   <minmp> 6.0 </minmp>
   <maxmp> 43.5 </maxmp>                                    <!-- aeromatic 30.0 -->
   <displacement> 4600 </displacement>                      <!-- aeromatic 2560.00 -->
   <maxhp> 1600.00 </maxhp>
   <cycles> 2.0 </cycles>
   <idlerpm> 700.0 </idlerpm>
   <maxthrottle> 1.0 </maxthrottle>
   <minthrottle> 0.2 </minthrottle>

</piston_engine>
