The Ju-87 was a bit of a turtle though - anything that slow without armour would have lasted seconds when the interceptors came rolling in (or AA opened up).
I've been following this discussion and been very interested by all the points (excellent posts by pretty much everyone imo

). Up until the info on the Hs-132, I was on the 'why would you worry about Jet CAS', but the Hs-132 is a fairly specific role where the jet engine make sense - presumably designed to be fast enough to avoid too much trouble from interceptors while carrying a payload to drop on an Allied invasion fleet.
Granted, it's not a 'CAS' in the A-10 sense, but in WW2 the role of a 'CAS' as we understand it hadn't fully 'coalesced', so a CAS in HoI terms is really an aircraft that delivers a payload to enemy ground units from relatively low heights - the idea that a CAS was loitering on station for hours was starting to be used (particularly later in the war), but it wasn't the only way to do it at that stage (or, indeed, in Korea/Vietnam, as per Porkmann's excellent posts above).
So if we define CAS more in a WW2 sense (where it covers everything from Ju-87 dive-bombers to Typhoons and P-47s with low level rocket attacks, to Mosquitoes, Hs-129s and so on), then an aircraft like the Hs-132, if it was adapted to a ground-attack rather than naval attack role (would the Hs-132 as originally designed be more a jet NAV than CAS?) could potentially qualify, and make sense - sense, in this case, that Germany wanted to deliver a payload, and bombers flying at prop speeds would never make it through Allied air patrols. In that context, even if it's a crazy, expensive thing to do, is it worth having in the game?
Well, I think anyone who read the at least the wiki entries can come to an understanding that the Hs-132 was a succesor fo the Ju-87 but just jet powered. The english wiki is listing only the "need to counter an invasion fleet", but the german one is more specific about that it was thought about a succesor of Ju-87 overall initially and the need to counter an invansion fleet might be added later to get more pressure on the responsible persons.
GER wiki:
Nachdem sich das Sturzkampfflugzeug Ju 87 mit zunehmender Dauer des Krieges als zu langsam und damit verwundbar gegenüber Jagdflugzeugeabwehr und Flak erwies, wurden im Reichsluftfahrtministerium (RLM) Überlegungen für ein Nachfolgemodell angestellt. Ausschlaggebend für die Wiederaufnahme des Konzepts waren die guten vormaligen Bekämpfungserfolge der Ju 87 bei Punktzielen. Mit den damals modernsten Mitteln sollte ein neues Muster entwickelt werden. Dafür sollten auch die gerade in der Entwicklung befindlichen Strahltriebwerke zum Einsatz gelangen. Die Entwurfsabteilung von Henschel stellte sich die folgenden Aufgaben:
hohe Horizontalgeschwindigkeit
höchste Sturzgeschwindigkeit bis dicht über das Ziel
kleinste Abmessungen
möglichst großer Schutz für den Piloten
Nach diesen Vorgaben begannen ab Anfang 1944 die ersten Entwurfsarbeiten für ein kleines Sturzkampfflugzeug mit Strahlantrieb. Zusätzlich sollten auch Tiefangriffe im Bahnneigungsflug möglich sein. Nach Windkanalversuchen und wegen der guten Wartungsmöglichkeiten wählte man eine Auslegung, ähnlich der Heinkel He 162, bei der das Triebwerk auf dem Rumpfrücken angeordnet ist.
-> google translate with some adjustments to understand it better.
After the dive bomber Ju 87 with increasing duration of the war was seen too slow and thus proved vulnerable against fighters and anti-aircraft defense, (RLM) were given consideration for a successor to the Reich Aviation Ministry. The main reason for the resumption of the concept of (dive bombing) was the good former successes of the Ju 87 on point targets. With the then modern means a new model should be developed. This also should use the jet engines currently in development.
The design department of Henschel turned out the following tasks:
high horizontal velocity
highest dive speed up to close above the target
smallest dimensions
greatest possible protection for the pilot
Following these guidelines in early 1944 the first design work for a small dive bomber jet propulsion begun. In addition, low-level attacks should be possible. After wind tunnel tests and because of good maintenance practices an similar design to the Heinkel He 162 was choosen, in which the engine is mounted on top of the fuselage...
So Hs-132 is a direct succesor of Ju-87 while just using the tech/experience at hand by that time.
A FW-190, P-47, Harrier Hurricane and so on was for sure designed as a fighter. And also reused as a fighter bomber in a CAS role later.
So they developed around that existing frame to suit it better for CAS need. So I would rather like to have a subclass fo the initial fighter modell and be able to make a subclass out of it like fighter-bomber.
Then we have the so called CAS only developments like IL-2/Ju87/Hs129 or the jet powered Hs132/Junkers EF 126..
Having sub-class out of them like NAV duty ->also interesting for adopted to CAG role.
Ju-87 and IL-2 are both designed as a ground attack plane like A-10. So in that regard they're equal. I agree of course that technological difference and experience of the development time differed of course.
Doesn't the question of whether jet CAS makes sense for HoI4 also depend on how the tech tree is implemented? If the layout of the tech tree is the same for all countries, with the specific model names and pictures being only "skins", then it's hard to justify a jet CAS slot on the Hs-132 unless suitable counterparts can also be found for at least a few of the other majors.
I don't think so. I think that all shold have the possibilities to do historical choices if they go down that route that was taken historically.
So if you develop as allies the a-bomb and do that historically then all is fine.
If you as GER spent the same amount on research and can field "ahistorcial" the a-bomb, then all is fine in my view too.
Think about a player doing ahistorical good with ITA or JAP and go for the a-bomb. Should they not be able to research them?
The sidequestion of this thread was if jet-cas were about being fielded in the timeframe of this game and the simple answer is: YES!
And on side two of this thread Sacer posted two links to some GER projects, one is a destroyer plane(successor of Me-210 types) and the other is indeed a planned succesor of Ju-87, just take a look at this plane!:
Could be thought to be a fake but the designer Prof. Dr. -Ing. Karl Leist was indeed involved in ww2 in designing jet planes.
Also most info about that topic(jet planes projects of ww2) seems not to be in then net by now..
A pic from the projected Ju-EF126 wich looks similar to the Hs-132:
Again:
The continually flaw in this discussion is here imo that by some the after war development/need and in war development/need is mixed as also neglecting the fact that a jet cas was about to be build by at least one country, so it is historically like the Me262 is. In ww2 we also had just 2 countries use jet planes overall(GER/ENG) and that is in the game. Also the game is likely going up to '48. SO by then the jets would have been much better if research was done with the speed/need that war is giving.
Some people now insist nonetheless that it is not a good idea to field and have jet cas in the game.
We can of course have different opinions on things like if we want to be able to build superheavy armour or superheavy battleships in the game etc.. In the end SHBB were build and SHARM was projected and tested by FRA and GER but never saw combat usage. So scrap that too. Some say yes, others say no: give me the possibiity to go that route too if it was historically possible and a country was about to do it.
Same as for jet cas, projected historically, let me have the chance to use it in the game. You can research them, you can build them, when/if is up to you.
The question arose if also jet cas was possible around by that time, and they were.
So we as the player should have the possibilities to go down that route(wich was historically done) and research, build and use such.
If an allied player would go ahistorically down that route too and spam their not historically but historically possible(!) jet-cas instead of P-47, is up to them.
All other nations that weren't that far in reserach as GER will need maybe names based on what would have been likely given. But thats up to the devs.
Now, if people want to debate about the effectiveness of such planes, thats another story imo. And as we have no historical evidence it is all up our guess, only backed up by our thoughts of physics/logic etc..
But thats not that usefull to decide if such a plane should be in the game overall imo..