Oh, as always- they are completely theoretical, my dear Mr. Pdf 27.
Unfortunately, the single prototype of the rocket-boosted interceptor Me 262 C-3a Heimatschützer III was completed in March of 1945, but never test-flown, while work on Ho 229 V8 – the third pattern aircraft for the Ho 229 A-1 airplane – barely started in February of 1945. However, certain theoretical conclusions, or perhaps rationally consistent technological evaluations, are completely possible.
Me 262 C-3a Heimatschützer III
You see, if an airplane like Ho 229 A-1 has a theoretical service ceiling of 15.800 meters, while his supposed adversary - the B36-A Peacemaker - possesses impartially verified and confirmed service ceiling of 11.917 meters, it is more than evident that the combat ceiling of the German fighter will surpass his opponent for 3.883 meters, thus being completely capable to maintain a highly important altitude advantage, required for the most effective vertical leap-and-drop maneuver. Even with an incorporated combat ceiling restriction of cca. 1.500 – 2000 meters (theoretically completely sufficient as a restricting compensation for the fully operative aerodynamic controllability of the airplane) the German machine still has a decisive advantage in combat ceiling.
Of course, numerous additional, more exotic German designs (like Messerschmitt P.1106 R, with a theoretical service ceiling of 20.000 meters) were completely excluded from our tiny theoretical observation.
BTW – have you checked those factual, measured combat-ceiling results for the completely forgotten Soviet machine, Yak 23 Flora, my dear Mr. Pdf 27? You know, for some unknown reasons Americans were highly interested for that tiny and completely unappealing airplane. Unbelievably, back there in 1953 they were willing to pay certain amount of solid gold + a long term friendship with all subsequent material and moral advantages to us (I mean Yugoslavia!) for a… basically stolen merchandise, purchased accidentally by the YAF on the 23rd of July, 1953, which was efficiently transferred back there to the good ole US of A.
Ex-Rumanian Yak 23 Flora, captured by YAF at some stage in testing – 1953.
Of course, that is a completely different story…