He-111 Fuel Loading for bombing run

[=BLW=Euclides]

Hi..

 

What parameters do you guys use for calculate the fuel loading for a bombing run in HE111?

 

I've been considering 1 liter per Km. So, if the distance i will fly to go to the target and come back to base will be 300km, plus 50 km reserve fuel, i will need 350Liters of fuel.

 

Is that reasonable?

 

What do you guys do?

[69TD_Hajo_Garlic]

I mostly fly it on wol where I don’t need more than 500l for climb power used most of the flight and some fuel in reserve in case i spring a leak.   Wish I had the answer your looking for but I’m not entirely sure.  I’ve heard a full fuel load in the h6 can keep airborne for upwards of 8 hours but my flights hardly last longer than 30min.

 

[ZachariasX]

3 hours ago, =BLW=Euclides said:

Hi..

 

What parameters do you guys use for calculate the fuel loading for a bombing run in HE111?

 

I've been considering 1 liter per Km. So, if the distance i will fly to go to the target and come back to base will be 300km, plus 50 km reserve fuel, i will need 350Liters of fuel.

 

Is that reasonable?

 

What do you guys do?

Depends if you expect to make it back. In your setting, I‘d take at least 400 liters. Depends on wind and bomb load as well.

 

That said, on WoL I find anything more than 50 L just a fire hazard...  

[[DBS]Browning]

3 hours ago, =BLW=Euclides said:

Hi..

 

What parameters do you guys use for calculate the fuel loading for a bombing run in HE111?

 

I've been considering 1 liter per Km. So, if the distance i will fly to go to the target and come back to base will be 300km, plus 50 km reserve fuel, i will need 350Liters of fuel.

 

Is that reasonable?

 

What do you guys do?

 

This is reasonable, but may cause problems if you get a fuel leak.

I go with 2L/KM, although the 111 only uses 0.9L/km.

[=BLW=Euclides]

Thanks everyone for the answers

[CIA_Yankee_]

On 8/5/2019 at 1:37 PM, ZachariasX said:

Depends if you expect to make it back. In your setting, I‘d take at least 400 liters. Depends on wind and bomb load as well.

 

That said, on WoL I find anything more than 50 L just a fire hazard...  

 

Hum. Does the He111 have self sealing fuel tanks, with an inert gas system to keep fumes down? 

 

Because without those, having less fuel probalby makes you more combustible.

[ZachariasX]

13 minutes ago, 71st_AH_Yankee_ said:

Because without those, having less fuel probalby makes you more combustible.

Combustible is the word, yes. ?

[CrazyDuck]

On 8/5/2019 at 8:37 PM, ZachariasX said:

Depends if you expect to make it back. In your setting, I‘d take at least 400 liters. Depends on wind and bomb load as well.

 

That said, on WoL I find anything more than 50 L just a fire hazard...  

 

Ironically, planes are more prone to fuel fires and fuel tank explosions the less fuel they have in them! This is due to explosive mixture of fuel and air that forms in the empty portion of the fuel tank. In other words - completely full fuel tank is the safest!

 

@=BLW=Euclides, I don't know an accurate answer to your question, but we can have some math fun.

 

In reality, Jumo 211 had a specific consumption of about 330 g/h /kWh. Let's assume you fly most of the time at 80% of max. power output (about 1000 hp), which is about 800 HP or roughly 600 kW, this brings us to about 360 kg of fuel burned per hour (for two engines). Speeding at 360 kph, this brings you at exactly 1kg per km.  For number of liters you have to consider the density (which is about 0,75 kg per liter) which increases this number to 480 liters per hour. So yeah, for a ballpark estimation, 1 kg per 1 km sounds like a good method!

 

EDIT: This is one way only! If your target is 400 km away, I'd take about 1000 liters (2x400 + reserve).

 

 

Edited August 10, 2019 by CrazyDuck

[6./ZG26_Klaus_Mann]

I normally calculate 400l/h per Engine with all German Planes. with a Ju-88 most proper Flights, including a 25 Minute Climb, Cruise to Target, Drop and Return take at least an Hour, so I fly the 88 with 800l Minimum. If a Flight Takes me over more than 2/3rds of a Map or I fly with more than 3 other People I calculate 1:15 to 1:30, depending on Map and Season, in Summer on Kuban I will go with 1:30, on Moscow in Winter I calculate with 1:15h, either way it's gonna be 1000l ot 1200l.

 

For the He-111 I never take less than 1000l, because it is more likely to get Flak Hits and Leak, so I want some reserve to get to friendly Lines. The 111 has lower Fuel Consumption due to lower Cruise Settings, but is also slower, so you just look at the Flight, if it's a short one take 1000l, if it's a Long one tale 1200l and if it's a really, rally long one take 1600l.

[1./KG4_Blackwolf]

^ That.

Klaus beat me to it. At cruise it sips the fuel until you get hit. Always good to have some extra fuel for that.

[=BLW=Euclides]

I have been used 1/1 - kg/km. That usualy result in a takeoff with 10% fuel only... I never fly more than 350km.... so I used to tkoff with 400 kg of fuel.

The he111 can climb relative fast to 5000 meters with 2 1000kg bombs with that weight. 

With that fuel, I plan to approach to the target from an angle less than 90 degrees in relation to the home track. So, nobody see when I am approaching, or even from where, so fighters dont have time to climb to me. And at altitude of 5k, no flaks hit me and I can fly safely back to home.

 

Sorry about my bad english.