WI JU-86 jets?

an out of left field question, what if jet(s) were added to JU-86 in a hybrid propulsion system with the idea to maintain their surveillance capability?

https://www.historynet.com/luftwaffes-high-flying-diesel.htm

obviously a new jet aircraft design would be best, but given the overall circumstances, including the wide availability of JU-86 airframes, say they pursued this scenario?

this is from a layman's point of view, they can use the same fuel? they might be able to eliminate the need for complex superchargers for the diesel piston engines? (not sure if they would want to?)

would just a single jet, if they could construct an asymmetrical design, be worth the effort?

was wondering if they could build the relatively few engines for this scenario to the more stringent standards they tested before switching to production jets?
 
If we use some handwavium and operate under the premise that the Luftwaffe has the Jumo jets and Ju-86 airframes available, it certainly isn't impossible. As for mounting, I could see something like a proto tri-jet configuration, with the jet mounted on top of the rear fuselage between the twin tails.

The issue there would be why are we mounting a jet? Is it just to test the viability of the concept? Do we want to shorten the time over target, or faster climb and/or shorter takeoff rolls?

Some of the most famous examples of mixed propulsion aircraft would be the Boeing KB-50 tanker:

KB-50J_refueling_VMA-214_FJ-4B.jpg


and the Convair B-36 (D through J variants) "Peacemaker" heavy bomber:

HighFlight-MiracleLanding2.jpg



In the case of both planes, their jets were modified to run on avgas rather than jet fuel so only one type of fuel needed to be carried. The jets weren't used full time either. The KB-50 deployed her two jets to fly fast enough to refuel jet fighters. The B-36 used her four jets to shorten her takeoff rolls and climb to her near 50 000 foot ceiling, and also on her bombing runs- otherwise, the aircraft and her crew would not get out of the way of a 10-15 Mt H-bomb detonation. Otherwise, both cruised on piston engines only, as using the jets full time would drastically reduce their range.

As for the jet-86, would the jet just be used to reach altitude, and then fly fast over Britain to minimize the time a Westland Welkin or high-altitude modified Mosquito has to intercept it, and make it harder to catch? Since it can't carry a large payload, perhaps a photo-recon variant could have this configuration?
 
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First generation jets dont seem to have worked too well at very high altitudes. Even the late war Arado 234 only had a max ceiling of 35,000ft and the Me262 sometimes struggled to get above the high flying bomber escorts.
 
If we use some handwavium and operate under the premise that the Luftwaffe has the Jumo jets and Ju-86 airframes available, it certainly isn't impossible. As for mounting, I could see something like a proto tri-jet configuration, with the jet mounted on top of the rear fuselage between the twin tails.

The issue there would be why are we mounting a jet? Is it just to test the viability of the concept? Do we want to shorten the time over target, or faster climb and/or shorter takeoff rolls?

As for the jet-86, would the jet just be used to reach altitude, and then fly fast over Britain to minimize the time a Westland Welkin or high-altitude modified Mosquito has to intercept it, and make it harder to catch? Since it can't carry a large payload, perhaps a photo-recon variant could have this configuration?

for the exact reasons you mentioned. they had at least considered 4 and 6 engine variants, but of course that requires an even larger wing, etc.
 
First generation jets dont seem to have worked too well at very high altitudes. Even the late war Arado 234 only had a max ceiling of 35,000ft and the Me262 sometimes struggled to get above the high flying bomber escorts.

that is why my focus was on the hybrid arrangement, not aware if the piston engines could sustain them at 52,000 ft. even if an earlier jet could get them there though?

edit. my understanding they were looking towards Jumo 208 engine for higher altitudes
 
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cannot locate the post-war study on destruction of the LW, basically they had negative view on jet program as it required retraining, etc. but gave positive marks to Arado AR-234 for recon role, as their capability in this area had nearly vanished.

but there was quite a gap between withdrawal of JU-86s and use of the Arado, to boost the JU-86 performance there are options of add. piston engines, jets, or some type of rockets?
 
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