<?xml version="1.0"?>


<!--Powerplant  2 - Pratt  Whitney R-1830-92 Twin Wasp turbosupercharged radials, rated at 1200 hp (894.59 kW) each-->
<!--
TAKE-OFF to 1000 ft rpm 2700     boost ins. Hg abs  48    boost 8.88
CLIMBING            rpm 2450     boost ins. Hg abs  40.5  boost 5.19
MAX RICH CONT       rpm 2250     boost ins. Hg abs  32.5  boost 1.26
MAX WEAK CONT       rpm 2250     boost ins. Hg abs  30    boost 0.03
COMBAT 5 MIN        rpm 2700     boost ins. Hg abs  45    boost 7.40
-->

<!--# Power output:

* 1,200 hp (895 kW) at 2,700 rpm for takeoff
* 700 hp (522 kW) at 2,325 rpm cruise power at 13,120 ft (4,000 m)

# Specific power: 0.66 hp/in3 (29.83 kW/l)
# Compression ratio: 6.7:1-->

<!--recalculated by Youcef ( grthteam) according to Spec above and template  from F4U-7-->

<piston_engine name="Pratt  Whitney R-1830-92">
    <minmp unit="INHG">          6.0 </minmp>
    <maxmp unit="INHG">         29.9 </maxmp>
    <displacement unit="IN3">1830</displacement>
    <bsfc>0.52</bsfc>
    <volumetric-efficiency>0.8</volumetric-efficiency>
    <ram-air-factor> 0.0 </ram-air-factor>
    <maxhp>1200.0</maxhp>
    <cycles>4.0</cycles>
    <idlerpm> 300.0 </idlerpm>
    <maxrpm> 2700   </maxrpm>
    <maxthrottle>    1.0 </maxthrottle>
    <minthrottle>    0.03 </minthrottle>
    <sparkfaildrop>  0.9 </sparkfaildrop>
    <turbocharged> 0.0 </turbocharged>
    <turbodelay> 0.0 </turbodelay>
    <boostmanual> 1.0 </boostmanual>
    <boostoverride> 0 </boostoverride>
    <boost-loss-factor> 1.8</boost-loss-factor>
    <numboostspeeds>   1</numboostspeeds>
    <supercharged> 1.0 </supercharged>
    <takeoffboost unit="INHG">18.68</takeoffboost>
    <ratedboost1 unit="INHG" >17.2</ratedboost1>
    <ratedpower1 unit="HP">1100</ratedpower1>
    <ratedrpm1>2700</ratedrpm1>
    <ratedaltitude1 unit="FT">12000</ratedaltitude1>
</piston_engine>
