How selecting cruise power affects determination of max attainable speed ?
The Whistling Death Flight Tables included a summary of cruise power effects, but in the various 3rd edition drafts one is referred to the (as-yet undistributed AFAIK) 3rd edition op-scale rules.
I have an aircraft which is:
Severely damaged
Carrying 1 step of engine power reduction
Selecting Cruise power
The A/C is in the LO band; max listed level speed is 6.5.
Clearly severe damage and one step power reduction combine to reduce max attainable by -1.5.
The effect of cruise power is harder to determine because it is apparently dependent on the order of application of other effects.
As corrected by errata, WD says that Cruise power reduces max attainable to the lesser of:
Max listed -1.5 (MH band or lower) or -1.0 (HI band or higher)
Max attainable -0.5
There are two methods to approach this:
If you do the cruise power adjustment first:
Lesser of (6.5 - 1.5 = 5.0) or (6.5 - 0.5 = 6.0); lesser value is 5.0
Severe damage and power loss further lower max attainable to 3.5.
If you do the cruise power adjustment last, then max listed is still 6.5 but max attainable is 5.0 due to other effects.
Lesser of (6.5 - 1.5 = 5.0) or (5.0 - 0.5 = 4.5); lesser value is 4.5; this already incorporates severe damage and power loss effects so max attainable is 4.5.
Can you provide guidance?
Power affects on max attainable are applied after all other affects. So 4.5 would be the correct answer. Case 2.
Applying affects in the order listed in rule 4 is a good guide.
JD
(http://games.groups.yahoo.com/group/FW_Referee_Central/message/1732) 13/04/2012
Loaded --> Max listed -0.5
Over loaded --> Max listed -1.0
Severely damaged --> Max listed -1.0
Engine power losses (see 11.3) --> Max listed -0.5 ea.
If at cruise power --> See Op-scale rules
If at idle or endurance power --> 1/2 of Max listed.
Power No. Mods. – Sum all engine powers first, then modify for step loss, severe damage, and load status in that order.
Charts prevail the rulebook.
Calculating idle power overspeed decel for a plane with a listed max attainable speed of 5.5 and with a disabled engine (3rd edition playtest rules).
4.3.1 says :
at idle or endurance power = 1/2 of Max listed.
This is how Rob did it.
Flight charts version 3.5.2 says :
Idle or End. power = 1/2 of Max attainable.
Is it max listed or max attainable ? Normaly charts prevail the rules.
Also, should we account for the disabled engine which is another 5 steps loss or -2.5.
This would put the max attainable at 5.5 -1 -2.5 = 2.0 which would go to 1.0 due to idle power.
I went back and looked at the Flight Tables evolution and up until version 3.5 it used ½ of max listed. Starting with version 3.5 it has used ½ max attainable.
It not as simple as saying it has severe damage and max attainable is max listed -1. We also need to account for the disabled engine which is another 5 steps loss or -2.5. This would put the max attainable at 5.5-1-2.5 = 2.0 which would go to 1.0 due to idle power.
In my opinion it appears that too much decel is being placed on the aircraft.
Hopefully JD can explain the intent of the rule change.
Rob R.
(https://groups.yahoo.com/neo/groups/FW_Fight_11/conversations/messages/8899) 11/04/2015
This was already brought up in prior playtesting. Flight rules version 3.5.3 (not yet released) reverts back to Max Listed phraseology. So Rob is doing it correctly and probably did so remembering the previous comments in another game. The change for now should be penned in to the 3.5.2 charts.
As a way to remember this, max attainable reductions only apply if you have a working engine and are capable of attaining speeds (accelerating).
Planes and gliders with no engines use max listed x 1/2 for idle (dead engine).
JD
(https://groups.yahoo.com/neo/groups/FW_Fight_11/conversations/messages/8900) 11/04/2015
G4M1 Betty unloaded with severe damage and 4 steps power loss.
Normal Max attainable = 5.0 at Mil, 4.0 at cruise
-1.0 severe damage
-1.0 engine damage
= 3.0 at Mil, 2.0 at cruise, 1.5 at idle
JD
(https://groups.yahoo.com/neo/groups/FW_TC_Darwin/conversations/messages/3326) 15/07/2015