Author Topic: Do 217  (Read 3976 times)

Offline Karnak

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Re: Do 217
« Reply #60 on: September 14, 2013, 07:26:23 AM »
The US bombers are far better defended, that would still be their forte.
Better, yes, but not that much and the most important position favors the Greif, particularly given its higher speed.  The B-24J is also highly vulnerable to damage and the B-17G's bomb load is lighter than some medium bombers.  The single MG151/20 offers as much, or more, firepower than the dual .50s, and applies it in a more concentrated manner.

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Now the Lanc:

- It still had a better range/load rate than the Greif.
Range is irrelevant as there is no target in AH that the He177A-5 wouldn't be able to hit.  Not sure if the load rate would matter or not, but given the Lancaster's slower speed and much weaker defenses I can't see it being much of an issue.

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Frontal defense: The Greif has a 20mm on the low position with a very limited field of fire, and only a single 7,92mm to complement that on the top.  Its firepower vs dead angles.
Frontal defense in AH is mostly moot as attacks rarely come from that angle.  The Lancaster's two .303s are a waste of weight and drag.

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Top: Greif had 3x13mm in 2 turrets.
Much better than the two .303s on the Lanc.  While the 13mm MG131 is not as good as the Browning .50, it is far, far superior to the Browning .303.

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Bottom: The Greif has a single 13mm MG.
That won't likely down many fighters, but it is superior to the Lancaster's zero guns on the bottom.

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Tail: I would take the 2x13mm turret of the Lanc over the Greif casemate 20mm, it has just a very narrow field of fire that can be easily avoided.
The pitiful amount of ammo significantly neuters the Lancaster's dual .50 option and again, while the Lancaster's turret design is superior, the Greif's greater speed will help it to drag fighters into its 20mm cone of coverage.  How much ammo did it carry for the tail gun?

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On top of that the vulnerability of the Greif engines would have to be modeled, a couple hits and 50% of the power is gone, and the Greif cant fly on a single engine... at least the A3 IIRC.  It would be a very vulnerable aircraft in spite of its strong airframe.
Yes, it would be more fragile, but does that one weakness make up for being superior, or very superior, in every other category?

If the He177A-5 were added with a 5600kg payload I would expect to see it almost entirely replace the Lancaster and, at the least, significantly reduce the usage of the B-24J.
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Offline Butcher

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Re: Do 217
« Reply #61 on: September 14, 2013, 08:57:50 AM »
You wouldn't make this statement if you'd have any knowledge about the Me 163 and it's dangerous behaviours and even more dangerous fuel.

They should of researched better fuel then one which spontaneously explodes komets just from fuel vapors. Although Eric brown seemed to enjoy the aircraft even though the german ground crew were smarter then him.
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Offline jag88

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Re: Do 217
« Reply #62 on: September 14, 2013, 01:24:50 PM »
Here's something from aIRDOC He-177 by manfred griehl:

"Due to massive engine problems, and I.KG 100 losing 15 aircraft on three missions over england alone, there were almost as many losses due to the susceptible engine problems as there were to pilot error and now mostly inexperienced crews, not to mention the losses to enemy action". I Gruppe KG100 has been formed from teh I./KG 4 with 14 He 177A-3.  After heavy losses during the Battle of France the numbers available to KG 100 was reduced to 36. A large part of the Geschwader and its HQ units were disbanded with only a single Gruppe Active.
However the aircraft were exempted from daily operational and collected for a large force employment against allied ships and land targets but this operation never happened.

So 80% of the aircraft didn't even make it to the target, turned back due to excessive weight - engine failure, inexperienced crews and susceptible engine problems and its ok?

The B-29 is one thing, the He-177 was plagued its entire life span and couldn't even get 5 planes to a target area without problems.

I have no clue, sure whatever insult you want to throw around - fact is the me-163 was safer getting a pilot in the air and land then the He-177 was for a crew to fly in.

Sad fact is the HE-177 will be added in Aces high, If we had the Me-163 then the He-177 deserves its place along side of it.


Oh... because if an aircraft hastily thrown into service using inexperienced aircrew, undertrained ground crews and untested aircraft does bad it means it ALWAYS did as bad, right? And also means that the subsequent A5 model was just as bad as well, right?

Lets see, form Griehl:

"One positive aspect of the operations was that the operational safety and reliability of the He I77A-3 had been improved, doing away with the need for the usual six- and 12fi-hour control checks. The regular 25-, 50- and 75-hour inspections were now completely sufficient, with special attention being paid to servicing of the coupled powerplants after 50 flying hours.

According to the technicians, the He 177 service-ability rate of II/ KG 40 was frequently in the order of 80 per cent; a great improvement over the 30 per cent or so recorded during the Gruppe's training phase, when flying operations were noticeably affected by moisture in the air which led to frequent accidental earthing of onboard electrical equipment. In contrast to the situation with I/KG 40, only one aircraft assigned to II /KG 40 was lost due to powerplant failure. During operations against Great Britain there had been numerous power-plant problems, caused mainly by the undertrained aircrews overstraining the engines. On the positive side, the Bordeaux-Merignac-based Grippe had carried out the first He 177 long-range flight (lasting 12fi hours) and proposed to increase the aircraft's range still further by using 900-hr (198 Imp gal) underwing auxiliary fuel tanks. Despite this overload, but obviously helped by the even stressing of both powerplants during the long-range flights, it had proved possible to operate engines for up to 115 flying hours without any problems."

Here is the first hint for many of the problems. More:

"The Technical School of Luftflotte 2 responsible for training ground personnel at Fassberg had two He 177s for instructional purposes, these being the second A-0 built by Arado and an A-1. In June 1943, IV/ KG 40 also had only two He 177 training aircraft, both A-0s, to instruct its crews on this new long-range bomber. The number was increased during the second half of 1943 with the arrival of 12 Kehl-equipped and several other He 177s; but due to the aforementioned grounding of all He 177s between February and May, training could not restart until October. A good seven months had been lost.

Early in 1944, the training unit was transferred to Lechfeld. A more serious problem was the lack of operationally experienced aircrews for instructional purposes. Due to the high loss rate II/KG 40 could not transfer any experienced crews to IV/KG 40 until March 1944, when two crews were made available for this vital task. As a result of this personnel shortage, 24 aircrews had to be handed over to I and II / KG 40 after only 15 hours of instruction on the He 177. Not only that; none of the new crews could complete their 'special weapon' training while at IV/KG 40 for lack of a proper bombing range. On 14 April 1944 IV/KG 40 had a total of 35 He 177A-0 / -1 /-3s, of which only 13 were serviceable. There were six instructors to train the young crews on the Fw 200, and 10 others for the He 177 — a total of just 16 instructors for no less than 80 student crews! Matters were made worse by the low serviceability of the He 177s used for training purposes due to the lack of replacement power-plants, and the loss of new-build He 177s as a result of enemy air raids."

Now from Price:

"In many cases, the crews involved were relatively young and inexperienced. The largest number of returnees came From the KG 100 combat group, I/KG 100: no less than 14 of its crews abandoned their mission and returned home early. More than anything else, most of the pilots living He 177s initially had no idea about the bomber's prescribed engine revs and highest permissible climbing speeds. The inevitable resulting powerplant overstressing led to no less than seven crashes and engine fires. Other crews undercut the minimum permissible speed, stalled and crashed. Prior to that, problems had arisen due to the sudden move to a new base at short notice, which had left too little time for comprehensive servicing of the A-3s assigned."

And:

"During these operations, von Riesen's crews had little trouble from overheating engines. By now the various modifications had greatly reduced the possibility of this happening. Furthermore the root cause of so many of the fires –over-rough use of the throttles and holding high power settings for too long—was now well known: the KG I pilots had been advised of the danger and avoided it. When engine fires did occur, it was usually the result of engine mishandling by inexperienced pilots."

This last bit was regarding the KG1 missions over Russia during the summer of 1944, where they had up to 87 He-177 bombing a single target.  So not even 5 aircraft, huh?

By September 1944 II/KG100 had a 90% serviceability rate with their A5s, a far cry for previous months, but by then lack of fuel meant the bomber groups were grounded.

And where in your quote is excessive weight mentioned?  Or is that a notion that you just tried to slip through with no factual support...
« Last Edit: September 14, 2013, 01:47:59 PM by jag88 »
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Offline jag88

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Re: Do 217
« Reply #63 on: September 14, 2013, 01:43:19 PM »
Better, yes, but not that much and the most important position favors the Greif, particularly given its higher speed.  The B-24J is also highly vulnerable to damage and the B-17G's bomb load is lighter than some medium bombers.  The single MG151/20 offers as much, or more, firepower than the dual .50s, and applies it in a more concentrated manner.

I am very interested on hearing about the He-177s superior speed, please quote speed, height and weight.

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Range is irrelevant as there is no target in AH that the He177A-5 wouldn't be able to hit.  Not sure if the load rate would matter or not, but given the Lancaster's slower speed and much weaker defenses I can't see it being much of an issue.

Maybe, but take into account load configuration, 5600Kg can be reached only through 2x1800 and 2x1000Kg bomb load, if you want a more flexible load then external hard points would have to be used or limit the aircraft to only 6x500Kg, 48x70Kg, 12x250Kg or at best 4x1200Kg, but I have never seen the last load quoted anywhere (6x1000Kg is possible only using armour piercing bombs which are smaller than their HE equivalents).  Bomb bay configuration would present a major issue with the Greif, so unless you use that particular config the aircraft would carry 4000Kg and lower loads.

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Frontal defense in AH is mostly moot as attacks rarely come from that angle.  The Lancaster's two .303s are a waste of weight and drag.

Much better than the two .303s on the Lanc.  While the 13mm MG131 is not as good as the Browning .50, it is far, far superior to the Browning .303.
That won't likely down many fighters, but it is superior to the Lancaster's zero guns on the bottom.

Top and low defense is certainly far better and beyond discussion.

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The pitiful amount of ammo significantly neuters the Lancaster's dual .50 option and again, while the Lancaster's turret design is superior, the Greif's greater speed will help it to drag fighters into its 20mm cone of coverage.  How much ammo did it carry for the tail gun?

800 rounds, but take a look again at the angles of the 20mm, you have to be a moron to get into it.  And what was the loaded speed of the Greif again?

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Yes, it would be more fragile, but does that one weakness make up for being superior, or very superior, in every other category?

If the He177A-5 were added with a 5600kg payload I would expect to see it almost entirely replace the Lancaster and, at the least, significantly reduce the usage of the B-24J.

The 88 in my name has nothing to do with nazis, skinheads or any other type of half-wit, nor with the "ideas" they support.

Offline Karnak

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Re: Do 217
« Reply #64 on: September 14, 2013, 01:50:35 PM »
Perhaps I recalled wrong, but I was under the impression that its loaded speed was in the 320ish range at 20k, 30-40mph faster than the Lancaster.
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Offline Butcher

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Re: Do 217
« Reply #65 on: September 14, 2013, 02:09:50 PM »
Perhaps I recalled wrong, but I was under the impression that its loaded speed was in the 320ish range at 20k, 30-40mph faster than the Lancaster.


« Last Edit: September 14, 2013, 02:13:08 PM by Butcher »
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Offline Karnak

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Re: Do 217
« Reply #66 on: September 14, 2013, 02:29:24 PM »
(Image removed from quote.)
(Image removed from quote.)
So 310mph or 341mph, depending on what those lines mean.

261 or 277mph on the deck is also far, far faster than any of the free heavies in AH.
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Offline Butcher

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Re: Do 217
« Reply #67 on: September 14, 2013, 02:38:16 PM »
So 310mph or 341mph, depending on what those lines mean.

261 or 277mph on the deck is also far, far faster than any of the free heavies in AH.

those numbers come direct from the Heinkel factories, which sounds correct considering the normal procedure of a He-177 was to attack from 22k and dive away at speeds of 370mph to 400.
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Offline Tank-Ace

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Re: Do 217
« Reply #68 on: September 14, 2013, 02:55:29 PM »
Can anyone provide speed charts of the Do 217 and the Ju188?

I'm curious as to their speed curves and how they perform at low altitude. That really seems to be the most important thing in AH.
You started this thread and it was obviously about your want and desire in spite of your use of 'we' and Google.

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Offline jag88

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Re: Do 217
« Reply #69 on: September 14, 2013, 02:56:44 PM »
So 310mph or 341mph, depending on what those lines mean.

261 or 277mph on the deck is also far, far faster than any of the free heavies in AH.

Yeah nice numbers arent they?

Those are from Heinkel in 1942.  Problem is this:




These are the 1944 Luftwaffe numbers for the A3 and A5 with flame dampers in actual service, and unless I am reading it wrong it indicates 480Km/h at 6000m and only at 26t (3t of bombs), far form the 31t max of the type.  For the A3 loaded with 2 missiles and weight maxed at 31t it does not indicate max speed, only max cruise of 410Km/h at 5000m, which is 35Km/h slower than at 26t with the same ordnance.  One could venture a guess and claim 440Km/h as the max speed for the He-177A-3 fully loaded.  It is a guess only, but I doubt it or the A5 were far off that mark.

Now, in short range "A" configuration, the Greif would likely not be at max weight and simply trade 2t of fuel and its volume of the "B" configuration (as illustrated in the chart) for its equivalent bomb capacity and keep its 480Km/h max.
« Last Edit: September 14, 2013, 03:08:48 PM by jag88 »
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Offline Butcher

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Re: Do 217
« Reply #70 on: September 14, 2013, 03:36:56 PM »
Yeah nice numbers arent they?

Those are from Heinkel in 1942.  Problem is this:
One could venture a guess and claim 440Km/h as the max speed for the He-177A-3 fully loaded.  It is a guess only, but I doubt it or the A5 were far off that mark.

Now, in short range "A" configuration, the Greif would likely not be at max weight and simply trade 2t of fuel and its volume of the "B" configuration (as illustrated in the chart) for its equivalent bomb capacity and keep its 480Km/h max.

You are assuming the A5 is going to be added in Aces High, I have 9 manuals dating 1941-1944 for the A3 which if anything was added in aces high it would be the 177-A3.

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Offline Butcher

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Re: Do 217
« Reply #71 on: September 14, 2013, 04:25:35 PM »
These are the 1944 Luftwaffe numbers for the A3 and A5 with flame dampers in actual service,

I read somewhere He-177s did not fly night time attacks during Operation Steinbock because they didn't have Flame Dampers - if this is true (I'd have to look at Airdoc or one of the other books to show this was the case) I do recall this being said more then once regarding Steinbock.

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Offline jag88

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Re: Do 217
« Reply #72 on: September 14, 2013, 05:00:12 PM »
You are assuming the A5 is going to be added in Aces High, I have 9 manuals dating 1941-1944 for the A3 which if anything was added in aces high it would be the 177-A3.



Heh, since both models used the same engine and the A5 actually a derated DB610 at that, please be so kind as to indicate what the performance difference would be since most changes between the A3 and 5 were intended to improve reliability and ruggedness than anything else...

Good for you and your manuals, funny thing you declined to contest the data and chose to provide us with this intriguing piece of information...

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I read somewhere He-177s did not fly night time attacks during Operation Steinbock because they didn't have Flame Dampers - if this is true (I'd have to look at Airdoc or one of the other books to show this was the case) I do recall this being said more then once regarding Steinbock.

I see you remain determined to prove how little you know about the aircraft, its operational life or its performance. Impressive.

In any case I look forward to hearing about these day time Steinbock attacks.
« Last Edit: September 14, 2013, 05:03:32 PM by jag88 »
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Offline jag88

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Re: Do 217
« Reply #73 on: September 14, 2013, 05:11:51 PM »
A further note on the Greifs guns, it changed a lot as with many German aircraft.  In the document provided you can see the A5s with MG131s on BOTH frontal positions and I understand it was common for the Kehl//missile equipped aircraft to move the MG151/20 to the top position in order to give it a better field of fire, leaving the bottom vacant.

There were alsp aircraft with a 2xMG131 tailposition.
« Last Edit: September 14, 2013, 05:14:59 PM by jag88 »
The 88 in my name has nothing to do with nazis, skinheads or any other type of half-wit, nor with the "ideas" they support.