Spit XIV cruse/combat/emergency settings?

[rogueblade]

Recently bought the Mk XIV and in technochat my engine is in emergency power when boost is <4 and rpm is 80-100%? 

What are the default/optimal Curse, Combat, Emergency settings for RPM and Boost (manifold pressure) in the XIV?

The in-game specs only state the max performance values at at 2750rpm.

[CountZero]

Max Cruising power (unlimited time): 2400 RPM, boost +7
International power (up to 1 hour): 2600 RPM, boost +9
Emergency Max All Out power (up to 5 minutes): 2750 RPM, boost +18

 

so if you go abow 2600 rpm OR +9lbs boost you will be in emergancy time.

 

if you go by % thats around 72-73%, that is max combat/international power, abow that % you go in emergancy mod. 

Also how mutch % you are in emergancy mode will effect how long your timer is, so you have 5min on 100% but if you for example use 85% youll have 15min and so on... but no mather how mutch power you use recharg is always 15min of flying without going in emergancy.

 

 

 

Edited April 27, 2021 by CountZero

[busdriver]

Additionally, from the Pilot Notes:

Takeoff: Slowly open the throttle to +9 pounds of Boost due to the tendency to swing. The PN states you can use +12 pounds after airborne, but +9 is sufficient.

Climb: The recommended climb schedule is 180 mph IAS up to 22,000 feet with a nominal power setting of 2600 rpm and +9 pounds of Boost. 

[Trooper117]

Here's some points on take off... (from my Air Ministry Mk XIV pilots notes... )

'Whenever possible open the throttle slowly up to +7 boost only. This is important as there is a strong tendency to swing to the right and to crab in the initial stages of the take-off run. If much power is used tyre wear is severe.'

 

'+12 boost may be used at heavy load, and should in any case be used on becoming airborne to minimise the possibility of lead fowling of the sparking plugs, but +7 boost is sufficient for a normal take-off.'

[busdriver]

3 minutes ago, Trooper117 said:

Here's some points on take off... (from my Air Ministry Mk XIV pilots notes... )

'Whenever possible open the throttle slowly up to +7 boost only. This is important as there is a strong tendency to swing to the right and to crab in the initial stages of the take-off run. If much power is used tyre wear is severe.'

 

'+12 boost may be used at heavy load, and should in any case be used on becoming airborne to minimise the possibility of lead fowling of the sparking plugs, but +7 boost is sufficient for a normal take-off.'

 

 

[Trooper117]

Well, I'm sitting here looking at my pilots notes for a Mk XIV with a Griffon 65 engine and it definitely says +7. (unless of course the Air Ministry got it wrong, lol!)

(That's in the PART II HANDLING section).

 

Edited April 27, 2021 by Trooper117

[busdriver]

2 minutes ago, Trooper117 said:

Well, I'm sitting here looking at my pilots notes for a Mk XIV with a Griffon 65 engine and it definitely says +7. (unless of course the Air Ministry got it wrong, lol!)

 

 

No doubt...mine is...

[Kurfurst]

53 minutes ago, rogueblade said:

Recently bought the Mk XIV and in technochat my engine is in emergency power when boost is <4 and rpm is 80-100%? 

What are the default/optimal Curse, Combat, Emergency settings for RPM and Boost (manifold pressure) in the XIV?

The in-game specs only state the max performance values at at 2750rpm.

[Trooper117]

Ah, yours is (Reprinted June 1945)... Mine is April 1946 and it's heavily amended in places, that's why there is a difference!

And mine is 'Air Publication 1565T, 2nd edition.

Edited April 27, 2021 by Trooper117

[Kurfurst]

My Spitty XIV doc is also April 1946, perhaps reprint? No amendments listed. 

[busdriver]

11 minutes ago, Trooper117 said:

Ah, yours is (Reprinted June 1945)... Mine is April 1946 and it's heavily amended in places, that's why there is a difference!

And mine is 'Air Publication 1565T, 2nd edition.

 

That makes sense, from a safety perspective. The tempo of operations is a great deal slower and pilots were probably less proficient. And the airplane could obviously get airborne with less power. Sorta the way turbojet airliners rarely use full power for takeoff in order to minimize the stress on the motors. 

Edited April 27, 2021 by busdriver

[Trooper117]

It's always the way in the armed forces... Training publications and pamphlets are produced, and over time as that particular weapon or piece of equipment is thoroughly used, any accidents evaluated, combat use evaluations etc, then those publications will be amended and changed and subsequent editions added. 

[rogueblade]

Cheers for info.

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