Author Topic: A-20G: Dangerous dogfighter  (Read 1585 times)

Offline Widewing

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A-20G: Dangerous dogfighter
« on: October 10, 2003, 12:44:11 AM »
Over the past month (covering portions of two tours) I have been flying the A-20G quite a bit as a fighter-bomber. I have enjoyed quite a few sorties where I engaged in combat with all kinds of fighters, from 18k, right down to the deck.

I have been impressed with its maneuverability, being able to out-turn a considerable portion of the fighters encountered. Its performance in the role of fighter has surprised many enemies, with an Me 262, P-51s, 190s, La-7s, Spitfires, N1K2s and other types falling victim to a bomber they perceived as an easy kill.

I took a few minutes and examined wing loading and power loading and you may find the result interesting. I used weights and wing areas published in various books and documents, not usually the HTC figures which are only described as "normal combat weight", and therefore are, at best very general.

I shall be begin with the lowest wing loading thru the highest in those I calculated for. I used the fuel load I normally fly with, such as 50% for the P-51B and D and A6M5, 75% for 190s, 109s, P-47, P-38 and FM-2. I used 100% for Soviet fighters (short range means taking as much as possible more often that not). I used 25% for the A-20G as that is more than enough to fly two sectors and fight for 10 minutes (yes, the A-20 will fly as far on 25% as the La-7 will on 100%).

A6M5b: 23.9 pounds per square foot.
FM-2: 27.7
Spit Mk.IX: 32.8
P-51B: 37.3
La-7: 37.5
Yak-9U: 37.7
P-51D: 38.1
F4U-1D: 38.8
Bf 109G-6: 39.4
Bf 109G-10: 40.0
A-20G: 41.8
Bf 110G-2: 42.0
Fw 190A-5: 43.2
P-38L: 44.0
P-47D-25: 46.2
Fw 190D-9 46.8
Fw 190A-8 48.3

Power loadings for same weights are as follows:

Bf 109G-10: 3.86 lbs/hp
P-38L: 4.11
Fw 190D-9: 4.11
La-7: 4.24
Yak-9U: 4.27
Bf 109G-6: 4.52
Bf 110G-2: 4.64
A6M5b: 5.01
Fw 190A-5: 5.02
Spitfire Mk.IX: 5.11
FM-2: 5.34
P-51D: 5.58
P-51B: 5.67
Fw 190A-8: 5.72
F4U-1D: 5.80
P-47D-25: 6.02
A-20G: 6.07

My regards,

Widewing
My regards,

Widewing

YGBSM. Retired Member of Aces High Trainer Corps, Past President of the DFC, retired from flying as Tredlite.

Offline Strange

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A-20G: Dangerous dogfighter
« Reply #1 on: October 10, 2003, 09:04:11 AM »
Very interesting read Widewing.  I've always jokenly call the A-20 a twin engine Jug.  It's quite a shot to show someone up in the A-20 thats in a fighter.  I even killed a 38 once that had alt over me.

Only issue I have is the wing loading of the A-20. I do tend to snap the wings guess I'm use to my jug :D

Offline rshubert

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A-20G: Dangerous dogfighter
« Reply #2 on: October 10, 2003, 11:20:27 AM »
Yeah, I discovered the A-20 a few months ago in the CT.  Under the right conditions, she can definitely hold her own against any of the early-mid war fighters.

Two things I try to remember:  Keep the speed DOWN (fi it gets beyond about 375, the ailerons come off) and make turns nose low.  She is NOT very good in the vertical.

Offline JAWS2003

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Re: A-20G: Dangerous dogfighter
« Reply #3 on: October 10, 2003, 11:48:35 AM »
Quote
Originally posted by Widewing

A6M5b: 23.9 pounds per square foot.
FM-2: 27.7
Spit Mk.IX: 32.8
P-51B: 37.3
La-7: 37.5
Yak-9U: 37.7
P-51D: 38.1
F4U-1D: 38.8
Bf 109G-6: 39.4
Bf 109G-10: 40.0
A-20G: 41.8
Bf 110G-2: 42.0
Fw 190A-5: 43.2
P-38L: 44.0
P-47D-25: 46.2
Fw 190D-9 46.8
Fw 190A-8 48.3

Power loadings for same weights are as follows:

Bf 109G-10: 3.86 lbs/hp
P-38L: 4.11
Fw 190D-9: 4.11
La-7: 4.24
Yak-9U: 4.27
Bf 109G-6: 4.52
Bf 110G-2: 4.64
A6M5b: 5.01
Fw 190A-5: 5.02
Spitfire Mk.IX: 5.11
FM-2: 5.34
P-51D: 5.58
P-51B: 5.67
Fw 190A-8: 5.72
F4U-1D: 5.80
P-47D-25: 6.02
A-20G: 6.07

My regards,

Widewing



Widewing can you pls check the Ta-152 wing loading. That plane is flying like a fully loaded jug at low alt. I know, is a high alt fighter and is the king over 27k, but it's maneuverability at low alt is strange to me.

Offline F4UDOA

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A-20G: Dangerous dogfighter
« Reply #4 on: October 10, 2003, 12:28:23 PM »
WW,

I think some of your loading weights are off.

I have never understood why some of the twin engine bombers and fighter bombers in AH turn so well.

The A-20G might be an exception but most if not all have horrible wing loading and power to weight ratio's. Also do you know what the flight restrictions are on the A20? What is the max G limit?

Roll rate is the best way to defeat a fighter bomber in a dogfight. I try to scissor while while chopping throttle and then either spit S or loop. Either that or dive to high speed and force an overshoot with rolling maneuvers.

I really enjoy the dueling aspect of AH. I would luv to try a duel between a Mossie and A-20 or BF110. Would make a nice scenario too.

Offline F4UDOA

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A-20G: Dangerous dogfighter
« Reply #5 on: October 10, 2003, 12:35:38 PM »
The TA-152 is a very interested A/C that may be not so much porked but underutilized in AH, but I frankly haven't tested it to be sure.

When you fly it however you must remember that it has the best range without external tanks of any AH fighter. So unless your going cross country never take more then 50% fuel and in most cases 25%. It handles pretty well at that weight.

Also it has a great aspect ratio with it's wide wingspan that helps it in turns despite high wing loading. Unlike the P-38 it has no nacelles in the wings ruining airflow so it enjoys the full benifit of it's prodgious wings. The biggest problem with this A/C is the Kill me perk tag that draws so much attention. I think without that it could be one of the best in the game.

Offline Strange

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A-20G: Dangerous dogfighter
« Reply #6 on: October 10, 2003, 01:10:50 PM »
F4UDOA,

Do not quote me on this but I think it was 4 g's for the A-20 & A-26.  

I know during the Korean war its bigger sister the A-26 was limited to 3 g's due to wing failures at the wingspar due to excessive diving and pulling out from the target area.

I think even the A-20 suffered from this problem as well.

I'll see if I can better info tonight.. unless Widewing has the info right handy
« Last Edit: October 10, 2003, 01:13:05 PM by Strange »

Offline icemaw

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A-20G: Dangerous dogfighter
« Reply #7 on: October 10, 2003, 06:34:04 PM »
Acording to zenos warbirds airforce film our a20 is not correctly modeled. Acording to the training film it is not a fully aerobatic aircraft. With major bank and dive angle limits. I watched the film a while ago but as I recall it said exceed these limits and the wings are going bye bye period. Having never flown one or any aircraft for that matter what do I know. I would tend to believe army training films tho.
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Offline FUNKED1

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A-20G: Dangerous dogfighter
« Reply #8 on: October 10, 2003, 10:00:03 PM »
Hey Ice if you come to the Mini-Con you can ask an A-20G combat vet about it in person.  :D

Offline NoBaddy

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A-20G: Dangerous dogfighter
« Reply #9 on: October 10, 2003, 10:26:30 PM »
Quote
Originally posted by icemaw
Acording to zenos warbirds airforce film our a20 is not correctly modeled. Acording to the training film it is not a fully aerobatic aircraft. With major bank and dive angle limits. I watched the film a while ago but as I recall it said exceed these limits and the wings are going bye bye period. Having never flown one or any aircraft for that matter what do I know. I would tend to believe army training films tho.


Of course the C-47 isn't fully aerobatic in reality either. Doesn't seem to stop C-47 drivers :).
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Offline icemaw

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A-20G: Dangerous dogfighter
« Reply #10 on: October 10, 2003, 10:49:05 PM »
Cant argue with you there nobaddy.
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Offline Widewing

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A-20G: Dangerous dogfighter
« Reply #11 on: October 11, 2003, 04:12:53 PM »
Quote
Originally posted by F4UDOA
WW,

I think some of your loading weights are off.

I have never understood why some of the twin engine bombers and fighter bombers in AH turn so well.

The A-20G might be an exception but most if not all have horrible wing loading and power to weight ratio's. Also do you know what the flight restrictions are on the A20? What is the max G limit?

Roll rate is the best way to defeat a fighter bomber in a dogfight. I try to scissor while while chopping throttle and then either spit S or loop. Either that or dive to high speed and force an overshoot with rolling maneuvers.

I really enjoy the dueling aspect of AH. I would luv to try a duel between a Mossie and A-20 or BF110. Would make a nice scenario too.


As I said, weights are from various published sources. Calculating fuel weight is easy enough, if you use 50% of max. internal fuel, you simply multiply the number of gallons by 6 pounds. Subtract that from max. weight less under wing (or in bomb bay) ordnance.

Realize that this is takeoff weight, not the weight the aircraft enters combat with, so this is a mitigating factor not easily accounted for.

During WWII, the A-20/Boston proved very able to defend itself, with one A-20G-30-DO pilot getting credit for shooting down 4 Japanese aircraft (one Ki-84, one Ki-43, one G4M2 Betty and a Ki-30 light bomber/observation aircraft).

When fighting an aggessive A-20G, DON'T try to force it to overshoot. Havocs bleed E like mad with little effort. last week, I bounced a pair of F4U-1Ds at 17k. They ignored me as I was on a reciprical heading about 3k above them. What they didn't realize, but soon discovered was that I was flying high CAP south of our field (A41 on Fester's wonderful map). Pulling power to idle and using the rudder as a suedo airbrake, I dived below them. At full throttle, I rocketed up from underneath, obliterating one Corsair. Zooming up, I rolled inverted and started down after the second fighter, who was desperately dumping ordnance and pickling off rockets. Seeing my Havoc boring in on his tail, the F4U pilot rolled right, turned about 90 degrees and then reversed his turn. That was where he died. Seeing him roll right, I pulled nose high, added a big boot full of rudder while rolling inverted. His attempt to scissor came to instant grief. There's nothing I appreciate more than an enemy who thinks scissoring will accomplish anything. That's one of the easiest defensive maneuvers to counter, even when flying a twin-engine bomber (the A-20 has an enormous rudder, and combined with full aileron deflection, the big Havoc rolls much faster than anyone would ever expect).

Just last night, I fought a one on one with a Yak-9T beginning at 10k. He was trying to cherry pick a smoking P-47 being nursed home at about 6k. As the Yak driver angled in for a gun run, I met him halfway, running in hot from his left side. He broke towards me, pushing his nose down. I high yo-yo'd left and caught him with a snapshot that took off his left aileron. Going vertical, the Yak tried to shake me in a climb. My greater E convinced him that this wouldn't work and he pulled thru into a loop. Again, I followed in a lag pursuit around thru yet another loop. I pulled enough lead and obtained some strikes. On the way down, he rolled right entering a spiral dive. My next burst demolished the Yak. As with the F4Us, this guy failed to anticipate the threat until he was engaged.

As for Split-S'ing away from the A-20, you had better have a lot of separation prior, because the A-20 accelerates like a demon in a dive (just don't take it past 425 mph with any loading on the airframe). Yesterday, I was jousting with Yucca's Hurricane IIC and surprised him by attacking from a split-S, getting a good piece of the Hurri with a snapshot. Some cannon bird caught him before I could complete my chandelle reverse and I had to settle for an assist. Yucca had a good laugh at the strange sight of seeing a bomber maneuvering in the vertical hard after one of the best turn fighters in the game. Let's face it, that's something you don't see every day. Therein lies one great advantage; still being surprised even when you see the enemy by allowing a seemingly innocuous aircraft to gain a position of tactical advantage.

I also like flying the SBD as a fighter. Its maneuverability is such that it can hang with almost any fighter but the Zero. What it lacks is straight-line speed. On the other hand, the A-20G is faster (at about 345 mph) at and below 5k than a considerable number of the fighters in the game. I have chased down Hellcats and N1K2s with it. When flying with less than 25% fuel load, the A-20G climbs well too.

I expect that the A-20 is a very close match for the Bf 110G-2 and Mossy in terms of agility. However, both of those can escape in a prolonged dive. Yet, the A-20G has the huge advantage of being able to be flown from the F3 position, with its unlimited visibility. Fly with a gunner and the A-20G is even more dangerous.

I did some digging into the design and operational G limits built into the A-20G. Max. operational G is limited to 5g positive, 2.5g negative, with minimum design stress rated at 7g (absolute failure was partially determined by airframe fatigue as well as total load carried, but Douglas estimated 7.5g to actually cause structural failure on a factory-fresh A-20G). Remember, these are steady state loads, not peaks of short duration. It takes time for metal to yield. Nonetheless, more than a few A-20s came home with wrinkled skin and with gaps between panels. Earlier A-20s were not rated this high. Douglas strengthened the wings and tail of the A-20G in order to add racks for up to 2,000 pounds of bombs under the wings. Heavier gauge aluminum skin was employed on the vertical tail surfaces. War Weary aircraft would not likely survive prolonged exposure to even 5g and were typically placcarded for 3g maximum. Aircraft having suffered battle damage were also susceptable to structural failure should they be horsed around hard before repair. But, that's true for any combat aircraft.

Flying with just 25% fuel, no bombs but fully armed guns, the A-20G weighed in above 19,000 lbs. With 465 square feet of wing, its wing loading is very low for a twin-engine bomber. It was powered by a pair of Wright R-2600 engines rated at 1,600 hp each at takeoff (up to 1,750 hp overboosted with water injection).
Compare that to a P-38L with full internal fuel weighing in at 17,800 pounds and two Allison V-1710 engines rated at 1,600 hp (often tuned to Allisons rating of 1,725 hp) at takeoff, but just 327 square feet of wing. I refer to the A-20G as the P-38's fat, ugly sister. :D

My regards,

Widewing
« Last Edit: October 11, 2003, 04:39:37 PM by Widewing »
My regards,

Widewing

YGBSM. Retired Member of Aces High Trainer Corps, Past President of the DFC, retired from flying as Tredlite.

Offline BUG_EAF322

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A-20G: Dangerous dogfighter
« Reply #12 on: October 11, 2003, 09:51:34 PM »
No kidding.
:D

Offline mora

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A-20G: Dangerous dogfighter
« Reply #13 on: October 12, 2003, 05:16:02 AM »
It's best quality is twin .50s in the upper turret. If you are in trouble, just pull vertical and hit shift+x and kill the unsuspecting dweeb.

Offline Gixer

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A-20G: Dangerous dogfighter
« Reply #14 on: October 12, 2003, 07:08:00 AM »
It's best quality?? Like to see you pull that move off. Pretty sure I would take your wing off before you even made it to the turret. :-)


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Quote
Originally posted by mora
It's best quality is twin .50s in the upper turret. If you are in trouble, just pull vertical and hit shift+x and kill the unsuspecting dweeb.