A.P. 129 RAF Flying Training Manual, Part I - Landplanes

[fruitbat]

Still no source, i wonder why.......

[Crumpp]

Only in emergency or special operational conditions the aircraft is flow at the "maximum rpm/boost for level flight" (later called "all out") limits and not above.

Read above it.....


"rpm limitations are directly associated with similar limitations on boost pressures also defined in relation to the operational condition".........

(vi) It may only be exceeded momentarily during aerobatics, fighting manoeuvers, or when diving.

[Seadog]

Originally Posted by Crumpp

Read above it.....


"rpm limitations are directly associated with similar limitations on boost pressures also defined in relation to the operational condition".........

(vi) It may only be exceeded momentarily during aerobatics, fighting manoeuvers, or when diving.

Dowding:

"The use of the automatic boost cut out control enables the pilot to get an emergency boost of + 12lbs per sq. in, from the engine for 5 minutes when the circumstances demand it..."

(ii) Limit of 5 mins, for a maximum of 3,000 rpm at 6.25lb/sq. in. or more.
http://www.spitfireperformance.com/dowding.pdf

[41Sqn_Banks]

Originally Posted by Crumpp

Read above it.....


"rpm limitations are directly associated with similar limitations on boost pressures also defined in relation to the operational condition".........

(vi) It may only be exceeded momentarily during aerobatics, fighting manoeuvers, or when diving.

This is related only to "maximum r.p.m. for level flight", described in paragraph (a) of the (vi), not related to "maximum boost for level flight" described in paragraph (b).
Of course the violation in these condition is not intended. It's caused by the constant speed propeller that has a certain delay before it can counteracts a increase/decrease of engine speed.

[NZtyphoon]

Originally Posted by Crumpp

Read above it.....


"rpm limitations are directly associated with similar limitations on boost pressures also defined in relation to the operational condition".........

(vi) It may only be exceeded momentarily during aerobatics, fighting manoeuvers, or when diving.

This is a training manual from 1937 and is general to all aircraft types of the time, so what it has to do with Merlin engines with 100 octane and +12lbs boost in 1940 is anybody's guess. Anyway I'd really like to see the anecdotes - and I note the word anecdotes - about the +16 lbs on 87 Octane...

[fruitbat]

re the anecdotes,

http://www.youtube.com/watch?v=iIIuR...eature=related

[FlyingHistory]

I'm going to risk a newb. mistake of going back to the thread title, which was "A.P. 129 RAF Flying Training Manual, Part I - Landplanes". I have an unintentionally hilarious 1939 Hurricane manual, which is trying to explain how to deal with spins. It concludes with the following:

The instructions laid down in the Flying Training Manual Part I., Chapter III, paragraph 134, are applicable to the Hurricane, but should be amplified in light of the foregoing remarks.

I would love to get my hands on this paragraph 134, which probably says something like "get out of a spin before your altitude is too low." Does anyone have suggestions where to find it? I've got quite a collection of WW2 manuals, but mostly US.
Thanks.

[NZtyphoon]

Originally Posted by FlyingHistory

I'm going to risk a newb. mistake of going back to the thread title, which was "A.P. 129 RAF Flying Training Manual, Part I - Landplanes". I have an unintentionally hilarious 1939 Hurricane manual, which is trying to explain how to deal with spins. It concludes with the following:
I would love to get my hands on this paragraph 134, which probably says something like "get out of a spin before your altitude is too low." Does anyone have suggestions where to find it? I've got quite a collection of WW2 manuals, but mostly US.
Thanks.

If you send a personal message to 41_Sqn Banks, who originally posted the pages from the manual, he could most likely help.

[Glider]

At least no one has said 16 squadrons

Damn

[Al Schlageter]

Originally Posted by Glider

At least no one has said 16 squadrons

Damn

Yes we are all still waiting for the identification of those 16 squadrons.