UFO Crash Recovery - Revision history

Magic9mushroom: Undo revision 85333 by Petrus4 (talk) Most Battleships land (the only exception is Retaliation), and the limit on UFO recoveries is UFOs rather than time.

2018-06-27T10:37:29Z

Undo revision 85333 by Petrus4 (talk) Most Battleships land (the only exception is Retaliation), and the limit on UFO recoveries is UFOs rather than time.

← Older revision		Revision as of 10:37, 27 June 2018
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	When [[UFOs]] crash land (except the [[Small Scout]], which has no engine), there is a 75% chance that its [[UFO Power Source\|Power Source(s)]] will explode, which also destroys their [[Elerium-115\|Elerium]]. It is an extremely powerful [[Explosions\|explosion]], usually even stronger than a [[Blaster Bomb]]. Power Sources (PSs) explode with an average (rated) strength of 215 ± 35 HE (min 180, max 250('''!!''')). The actual equation used is 180+(Rnd#×70). A PS explosion is always enough to [[Explosions#Object_Destruction\|destroy]] any Elerium caught in its blast, and its blasts have a radius of 11 tiles (diameter 23), as wide as a Blaster.		When [[UFOs]] crash land (except the [[Small Scout]], which has no engine), there is a 75% chance that its [[UFO Power Source\|Power Source(s)]] will explode, which also destroys their [[Elerium-115\|Elerium]]. It is an extremely powerful [[Explosions\|explosion]], usually even stronger than a [[Blaster Bomb]]. Power Sources (PSs) explode with an average (rated) strength of 215 ± 35 HE (min 180, max 250('''!!''')). The actual equation used is 180+(Rnd#×70). A PS explosion is always enough to [[Explosions#Object_Destruction\|destroy]] any Elerium caught in its blast, and its blasts have a radius of 11 tiles (diameter 23), as wide as a Blaster.
	It is thus a great mystery how the Medium Scout has any survivors after the power source blows.		It is thus a great mystery how the Medium Scout has any survivors after the power source blows.

	In practical terms, the Medium Scout is probably the most efficient target for Elerium recovery. You won't often see a Battleship on the ground, and the Medium Scout is also small enough that you can get in and out quickly, which means that even if you've only got a 25% chance ''per ship'', you can get more chances in the same timeframe.

	In terms of Elerium recovery, all but the [[Supply ship\|Supply Ship]] fall into two easy categories:		In terms of Elerium recovery, all but the [[Supply ship\|Supply Ship]] fall into two easy categories:

Petrus4: /* Power Source Explosions and Elerium Recovery */

2017-11-09T22:45:51Z

Power Source Explosions and Elerium Recovery

← Older revision		Revision as of 22:45, 9 November 2017
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	When [[UFOs]] crash land (except the [[Small Scout]], which has no engine), there is a 75% chance that its [[UFO Power Source\|Power Source(s)]] will explode, which also destroys their [[Elerium-115\|Elerium]]. It is an extremely powerful [[Explosions\|explosion]], usually even stronger than a [[Blaster Bomb]]. Power Sources (PSs) explode with an average (rated) strength of 215 ± 35 HE (min 180, max 250('''!!''')). The actual equation used is 180+(Rnd#×70). A PS explosion is always enough to [[Explosions#Object_Destruction\|destroy]] any Elerium caught in its blast, and its blasts have a radius of 11 tiles (diameter 23), as wide as a Blaster.		When [[UFOs]] crash land (except the [[Small Scout]], which has no engine), there is a 75% chance that its [[UFO Power Source\|Power Source(s)]] will explode, which also destroys their [[Elerium-115\|Elerium]]. It is an extremely powerful [[Explosions\|explosion]], usually even stronger than a [[Blaster Bomb]]. Power Sources (PSs) explode with an average (rated) strength of 215 ± 35 HE (min 180, max 250('''!!''')). The actual equation used is 180+(Rnd#×70). A PS explosion is always enough to [[Explosions#Object_Destruction\|destroy]] any Elerium caught in its blast, and its blasts have a radius of 11 tiles (diameter 23), as wide as a Blaster.
	It is thus a great mystery how the Medium Scout has any survivors after the power source blows.		It is thus a great mystery how the Medium Scout has any survivors after the power source blows.

			In practical terms, the Medium Scout is probably the most efficient target for Elerium recovery. You won't often see a Battleship on the ground, and the Medium Scout is also small enough that you can get in and out quickly, which means that even if you've only got a 25% chance ''per ship'', you can get more chances in the same timeframe.

	In terms of Elerium recovery, all but the [[Supply ship\|Supply Ship]] fall into two easy categories:		In terms of Elerium recovery, all but the [[Supply ship\|Supply Ship]] fall into two easy categories:

Hobbes at 02:37, 23 July 2013

2013-07-23T02:37:08Z

← Older revision		Revision as of 02:37, 23 July 2013
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	[[Category: Missions]]		[[Category: Missions]]
	[[Category: Tactics]]		[[Category: Tactics]]
			[[Category:Enemy Unknown/UFO Defense]]

MikeTheRed: /* Supply Ship */ Don't know why I didn't add that right

2012-09-14T02:11:06Z

Supply Ship: Don't know why I didn't add that right

← Older revision		Revision as of 02:11, 14 September 2012
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	All three <u> 1.6%</u>		All three <u> 1.6%</u>
	100.0%		100.0%
	Due to its layout, the Supply Ship is also unique in another way. In other ships with adjacent PSs, all the other PSs are destroyed if just one of them explodes. In other words, only one can actually explode. But in the Supply Ship, the two end PSs can explode, and it's possible to have the damage from these two huge explosions superimposed in the mid area between the two PSs. This has a 50% chance of happening, via "two" ways (the first two lines in the table). If both of the PSs blew with high strength, there will be extensive roof damage, letting you see into the floor above (and raw dirt beneath). The left PS damages the pristine roof/floor tile to its damaged (a.k.a. "dead") tile with HE from 80 to 125, but doesn't have the 130 needed (260/2; it can't be over 255) to completely vaporize both the pristine tile ''and'' the damaged tile... and then the right PS blows and easily adds the 50 HE needed to vaporize a number of damaged tiles in the middle. The damage would be much more extensive if the inner UFO walls didn't prevent the first blast from damaging a lot more tiles; there may not have been any floor left in the middle of the second level, to go from one end of the UFO to the other on that level.		Due to its layout, the Supply Ship is also unique in another way. In other ships with adjacent PSs, all the other PSs are destroyed if just one of them explodes. In other words, only one can actually explode. But in the Supply Ship, the two end PSs can explode, and it's possible to have the damage from these two huge explosions superimposed in the mid area between the two PSs. This has a 56.3% chance of happening, via "two" ways (the first two lines in the table). If both of the PSs blew with high strength, there will be extensive roof damage, letting you see into the floor above (and raw dirt beneath). The left PS damages the pristine roof/floor tile to its damaged (a.k.a. "dead") tile with HE from 80 to 125, but doesn't have the 130 needed (260/2; it can't be over 255) to completely vaporize both the pristine tile ''and'' the damaged tile... and then the right PS blows and easily adds the 50 HE needed to vaporize a number of damaged tiles in the middle. The damage would be much more extensive if the inner UFO walls didn't prevent the first blast from damaging a lot more tiles; there may not have been any floor left in the middle of the second level, to go from one end of the UFO to the other on that level.

	For the record, PS explosions differ from other explosions in a couple of ways - although for all practical purposes, you'd never know the difference. For more info, see [[Explosions#UFO_Power_Sources]].		For the record, PS explosions differ from other explosions in a couple of ways - although for all practical purposes, you'd never know the difference. For more info, see [[Explosions#UFO_Power_Sources]].

MikeTheRed: /* Supply Ship */ clarify

2012-07-30T04:18:12Z

Supply Ship: clarify

← Older revision		Revision as of 04:18, 30 July 2012
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	All three <u> 1.6%</u>		All three <u> 1.6%</u>
	100.0%		100.0%
	~~For~~ the ~~record~~, ~~you will see some~~ of the ~~worst internal UFO damage in~~ Supply ~~Ships where both of~~ the ~~side~~ PSs have ~~blown up. This is because~~ the damage from ~~a Blaster+ explosion has been~~ superimposed ~~over the damage from another Blaster+ explosion,~~ in the mid area between the two. This has a 50% chance of happening, via "two" ways (the first two lines in the table). If both of the PSs blew with high strength, there will be extensive roof damage, letting you see into the floor above (~~or to the~~ raw dirt beneath).		Due to its layout, the Supply Ship is also unique in another way. In other ships with adjacent PSs, all the other PSs are destroyed if just one of them explodes. In other words, only one can actually explode. But in the Supply Ship, the two end PSs can explode, and it's possible to have the damage from these two huge explosions superimposed in the mid area between the two PSs. This has a 50% chance of happening, via "two" ways (the first two lines in the table). If both of the PSs blew with high strength, there will be extensive roof damage, letting you see into the floor above (and raw dirt beneath). The left PS damages the pristine roof/floor tile to its damaged (a.k.a. "dead") tile with HE from 80 to 125, but doesn't have the 130 needed (260/2; it can't be over 255) to completely vaporize both the pristine tile ''and'' the damaged tile... and then the right PS blows and easily adds the 50 HE needed to vaporize a number of damaged tiles in the middle. The damage would be much more extensive if the inner UFO walls didn't prevent the first blast from damaging a lot more tiles; there may not have been any floor left in the middle of the second level, to go from one end of the UFO to the other on that level.
	The left PS damages the pristine roof/floor tile to its damaged (a.k.a. "dead") tile with HE from 80 to 125, but doesn't have the 130 ~~need~~ to completely vaporize both the pristine tile ''and'' the damaged tile... and then the right PS blows and easily adds the 50 HE needed to vaporize a number of damaged tiles in the middle. The damage would be much more extensive if the inner UFO walls didn't prevent the first blast from damaging a lot more tiles; there may not have been any floor left in the middle of the second level, to go from one end of the UFO to the other on that level.

	For the record, PS explosions differ from other explosions in a couple of ways - although for all practical purposes, you'd never know the difference. For more info, see [[Explosions#UFO_Power_Sources]].		For the record, PS explosions differ from other explosions in a couple of ways - although for all practical purposes, you'd never know the difference. For more info, see [[Explosions#UFO_Power_Sources]].

MikeTheRed: /* Adjacent PSs */

2012-07-30T03:54:39Z

Adjacent PSs

← Older revision		Revision as of 03:54, 30 July 2012
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	If one blows, all Elerium is destroyed. So the chance that any Elerium is left, is the chance that not a single one blows - it's 0.25 raised to the number of PSs.		If one blows, all Elerium is destroyed. So the chance that any Elerium is left, is the chance that not a single one blows - it's 0.25 raised to the number of PSs.

	:[[Harvester]], 2 PSs: Average of 9 Elerium (6.25% chance, 100 Elerium)		:[[Harvester]], 2 PSs: Average of 6.25 Elerium (6.25% chance of 100 Elerium)
	:[[Terror ship\|Terror Ship]], 4 PSs: Average of 0.78 Elerium (0.39% chance, 200 Elerium)		:[[Terror ship\|Terror Ship]], 4 PSs: Average of 0.78 Elerium (0.39% chance of 200 Elerium)

	This is why the guts of a crashed Terror Ship are almost always a smoking crater... ~~there ''isn't'' a Blaster explosion (or worse),~~ only once every 256 crashes! (0.39%)		This is why the guts of a crashed Terror Ship are almost always a smoking crater... only once every 256 crashes (0.39%) is there not an explosion with the strength of a Blaster bomb (or worse)!

	=== Supply Ship ===		=== Supply Ship ===

Hajo: /* Supply Ship */

2009-07-25T13:40:15Z

Supply Ship

← Older revision		Revision as of 13:40, 25 July 2009
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	This one is an oddball, because if a side PS explodes it takes out the middle one (before it has a chance to explode), but just barely doesn't reach to the PS on the other side (the explosion radius is 11). Yet if the middle one explodes, it takes out all 3 PSs. So there are three possible scenarios with PSs left: only the left-most PS left, only the right-most PS left, or all 3 PSs left. But there are two ways to get to the right-most PS being left, and one of those ways has a higher chance of happening than the other.		This one is an oddball, because if a side PS explodes it takes out the middle one (before it has a chance to explode), but just barely doesn't reach to the PS on the other side (the explosion radius is 11). Yet if the middle one explodes, it takes out all 3 PSs. So there are three possible scenarios with PSs left: only the left-most PS left, only the right-most PS left, or all 3 PSs left. But there are two ways to get to the right-most PS being left, and one of those ways has a higher chance of happening than the other.

	The table below was first made by constructing a simple Yes/No table of the eight possible combinations for the 3 PSs blowing (Y) or not (N). Then I filled in by hand how many engines would be left. Then I constructed a simple odds table (75% chance if there was a Y for that PS, 25% if not), multiplied the three odds for a cumulative probability, and finally multiplied the cumulative probability by the number of engines left, times 50 for the Elerium PSs hold. As a last touch, I sorted on decreasing cumulative odds (i.e., probability):		The table below was first made by constructing a simple Yes/No table of the eight possible combinations for the 3 PSs blowing (Y) or not (N).
			Then I filled in by hand how many engines would be left.
			Then I constructed a simple odds table (75% chance if there was a Y for that PS, 25% if not), multiplied the three odds for a cumulative probability, and finally multiplied the cumulative probability by the number of engines left, times 50 for the Elerium PSs hold. As a last touch, I sorted on decreasing cumulative odds (i.e., probability):

	<u>PS Explodes</u> PSs <u>Odds for PS ...</u> Cum. E115		<u>PS Explodes</u> PSs <u>Odds for PS ...</u> Cum. E115
Line 48:		Line 50:
	'''''Totals''''' 1.000 14.06		'''''Totals''''' 1.000 14.06

	Notes: (1) If the left one blows, it kills the middle, even if it was "supposed to" blow, and the right PS remains, at a high-ish chance... but (2) if the left PS doesn't blow and the middle one does, they're all dead. Zero chance of any Elerium.		Notes:
			* (1) If the left one blows, it kills the middle, even if it was "supposed to" blow, and the right PS remains, at a high-ish chance... but
			* (2) if the left PS doesn't blow and the middle one does, they're all dead. Zero chance of any Elerium.

	So. The total cumulative probability is 100% (''check''). And the final answer is: '''14.06 Elerium is recovered from Supply Ships, on average'''. Here's what you'll tend to see:		So. The total cumulative probability is 100% (''check''). And the final answer is: '''14.06 Elerium is recovered from Supply Ships, on average'''.
			Here is what you'll tend to see:

	<u>PS(s) Left</u> <u>Likelihood</u>		<u>PS(s) Left</u> <u>Likelihood</u>
Line 58:		Line 63:
	All three <u> 1.6%</u>		All three <u> 1.6%</u>
	100.0%		100.0%
	For the record, you will see some of the worst internal UFO damage in Supply Ships where both of the side PSs have blown up. This is because the damage from a Blaster+ explosion has been superimposed over the damage from another Blaster+ explosion, in the mid area between the two. This has a 50% chance of happening, via "two" ways (the first two lines in the table). If both of the PSs blew with high strength, there will be extensive roof damage, letting you see into the floor above (or to the raw dirt beneath). The left PS damages the pristine roof/floor tile to its damaged (a.k.a. "dead") tile with HE from 80 to 125, but doesn't have the 130 need to completely vaporize both the pristine tile ''and'' the damaged tile... and then the right PS blows and easily adds the 50 HE needed to vaporize a number of damaged tiles in the middle. The damage would be much more extensive if the inner UFO walls didn't prevent the first blast from damaging a lot more tiles; there may not have been any floor left in the middle of the second level, to go from one end of the UFO to the other on that level.		For the record, you will see some of the worst internal UFO damage in Supply Ships where both of the side PSs have blown up. This is because the damage from a Blaster+ explosion has been superimposed over the damage from another Blaster+ explosion, in the mid area between the two. This has a 50% chance of happening, via "two" ways (the first two lines in the table). If both of the PSs blew with high strength, there will be extensive roof damage, letting you see into the floor above (or to the raw dirt beneath).
			The left PS damages the pristine roof/floor tile to its damaged (a.k.a. "dead") tile with HE from 80 to 125, but doesn't have the 130 need to completely vaporize both the pristine tile ''and'' the damaged tile... and then the right PS blows and easily adds the 50 HE needed to vaporize a number of damaged tiles in the middle. The damage would be much more extensive if the inner UFO walls didn't prevent the first blast from damaging a lot more tiles; there may not have been any floor left in the middle of the second level, to go from one end of the UFO to the other on that level.

	For the record, PS explosions differ from other explosions in a couple of ways - although for all practical purposes, you'd never know the difference. For more info, see [[Explosions#UFO_Power_Sources]].		For the record, PS explosions differ from other explosions in a couple of ways - although for all practical purposes, you'd never know the difference. For more info, see [[Explosions#UFO_Power_Sources]].

Jasonred: /* Power Source Explosions and Elerium Recovery */

2009-02-27T02:24:57Z

Power Source Explosions and Elerium Recovery

← Older revision		Revision as of 02:24, 27 February 2009
Line 7:		Line 7:

	When [[UFOs]] crash land (except the [[Small Scout]], which has no engine), there is a 75% chance that its [[UFO Power Source\|Power Source(s)]] will explode, which also destroys their [[Elerium-115\|Elerium]]. It is an extremely powerful [[Explosions\|explosion]], usually even stronger than a [[Blaster Bomb]]. Power Sources (PSs) explode with an average (rated) strength of 215 ± 35 HE (min 180, max 250('''!!''')). The actual equation used is 180+(Rnd#×70). A PS explosion is always enough to [[Explosions#Object_Destruction\|destroy]] any Elerium caught in its blast, and its blasts have a radius of 11 tiles (diameter 23), as wide as a Blaster.		When [[UFOs]] crash land (except the [[Small Scout]], which has no engine), there is a 75% chance that its [[UFO Power Source\|Power Source(s)]] will explode, which also destroys their [[Elerium-115\|Elerium]]. It is an extremely powerful [[Explosions\|explosion]], usually even stronger than a [[Blaster Bomb]]. Power Sources (PSs) explode with an average (rated) strength of 215 ± 35 HE (min 180, max 250('''!!''')). The actual equation used is 180+(Rnd#×70). A PS explosion is always enough to [[Explosions#Object_Destruction\|destroy]] any Elerium caught in its blast, and its blasts have a radius of 11 tiles (diameter 23), as wide as a Blaster.
			It is thus a great mystery how the Medium Scout has any survivors after the power source blows.

	In terms of Elerium recovery, all but the [[Supply ship\|Supply Ship]] fall into two easy categories:		In terms of Elerium recovery, all but the [[Supply ship\|Supply Ship]] fall into two easy categories:

Zombie: /* See Also */ Added Navbar.

2009-01-05T06:11:45Z

Zombie: Relinking.

2008-12-17T21:07:39Z

Relinking.

← Older revision		Revision as of 21:07, 17 December 2008
Line 8:		Line 8:
	When [[UFOs]] crash land (except the [[Small Scout]], which has no engine), there is a 75% chance that its [[UFO Power Source\|Power Source(s)]] will explode, which also destroys their [[Elerium-115\|Elerium]]. It is an extremely powerful [[Explosions\|explosion]], usually even stronger than a [[Blaster Bomb]]. Power Sources (PSs) explode with an average (rated) strength of 215 ± 35 HE (min 180, max 250('''!!''')). The actual equation used is 180+(Rnd#×70). A PS explosion is always enough to [[Explosions#Object_Destruction\|destroy]] any Elerium caught in its blast, and its blasts have a radius of 11 tiles (diameter 23), as wide as a Blaster.		When [[UFOs]] crash land (except the [[Small Scout]], which has no engine), there is a 75% chance that its [[UFO Power Source\|Power Source(s)]] will explode, which also destroys their [[Elerium-115\|Elerium]]. It is an extremely powerful [[Explosions\|explosion]], usually even stronger than a [[Blaster Bomb]]. Power Sources (PSs) explode with an average (rated) strength of 215 ± 35 HE (min 180, max 250('''!!''')). The actual equation used is 180+(Rnd#×70). A PS explosion is always enough to [[Explosions#Object_Destruction\|destroy]] any Elerium caught in its blast, and its blasts have a radius of 11 tiles (diameter 23), as wide as a Blaster.

	In terms of Elerium recovery, all but the [[Supply Ship]] fall into two easy categories:		In terms of Elerium recovery, all but the [[Supply ship\|Supply Ship]] fall into two easy categories:

	=== Isolated PSs ===		=== Isolated PSs ===
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	:[[Harvester]], 2 PSs: Average of 9 Elerium (6.25% chance, 100 Elerium)		:[[Harvester]], 2 PSs: Average of 9 Elerium (6.25% chance, 100 Elerium)
	:[[Terror Ship]], 4 PSs: Average of 0.78 Elerium (0.39% chance, 200 Elerium)		:[[Terror ship\|Terror Ship]], 4 PSs: Average of 0.78 Elerium (0.39% chance, 200 Elerium)

	This is why the guts of a crashed Terror Ship are almost always a smoking crater... there ''isn't'' a Blaster explosion (or worse), only once every 256 crashes! (0.39%)		This is why the guts of a crashed Terror Ship are almost always a smoking crater... there ''isn't'' a Blaster explosion (or worse), only once every 256 crashes! (0.39%)

← Older revision		Revision as of 06:11, 5 January 2009
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	==See Also==		==See Also==
	* [[Missions]]		{{Mission Types Navbar}}
	* [[UFO Ground Assault]]

	[[Category: Missions]]		[[Category: Missions]]
	[[Category: Tactics]]		[[Category: Tactics]]