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Ju52 variants

Posted: Wed Feb 15, 2023 3:23 pm
by DarkHorse2
Came across this doc recently:
https://www.ju52archiv.de/Ju52.pdf

Not only did it give some insight into various Ju52 missions, but also fairly conclusively shows when a specific variant (at the latest) first entered service.

At first glance....
Ju 52/3m (note - most likely a generic label, could be Ju52/3m???) :evil:
Ju 52/3mce(See) - 1931
Ju 52/3mde - 11/1932
Ju 52/3mte - 11/1938
Ju 52/3mge - 05/1934 (note - most likely just a generic label, could be Ju 52/3mg?e)(some additional clues provided where they specified engine type, i.e. 3x BMW132N(853 hp, 636 kW))
Ju 52/3mg1e - 03/1935
Ju 52/3mg2e - 09/1938
Ju 52/3mg3e - 02/1935
Ju 52/3mg4e - 10/1936
Ju 52/3mg4e(See) - 04/1936
Ju 52/3mg5e - 05/1940
Ju 52/3mg6e - 04/1940
----
Ju 52/3mg7e - 03/1941
The Ju 52/3mg7e was the principal production model.
Equipped with 3x BMW132T-2 (830hp) engines.
---
Ju 52/3mg8e - 08/1941
Ju 52/3mg10e - 07/1942
Ju 52/3mg14e - 09/1943

Re: Ju52 variants

Posted: Wed Feb 15, 2023 5:05 pm
by DarkHorse2
FYI - The version still being flown (until recently) is the Ju52/3mg4e.

https://www.ju-air.ch/en/about-ju-air/fleet/

They have credible performance data posted regarding the '3mg4e', but sadly it uses the older 3x BMW132A engines.

Basic weight:
7000 kg
Maximum take-off weight:
10500 kg ('3mg7e' had a MTOW of 11000kg and could be overloaded up to 12500kg or more)
Maximum cargo weight:
3500 kg (that has to account for fuel weight, crew weight, passenger weight and cargo weight. given the '3mg7e' had an increased MTOW, its cargo weight would have been increased as well)

Speeds
Cruising speed:

180 km/h (111 mph) (this looks to be too low.... hmm....)
Speed with extended flaps:
120 km/h with 10500 kg
105 km/h with 7500 kg

Tank capacity:
2500 liters (consistent with the '3mg7e')
Fuel consumption:
approx. 380 l/h (100 G/h) (if accurate, this is specific to the BMW132A engine and would not be the same as the BMW 132T-2 engine used in the '3mg7e')
Maximum flying time:
6 hours (2500 liters / 380 liters per hour = 6.5789 hours)
Construction year:
1939

----
Given the data provided, Max Range should be approximately Cruising Speed * Endurance (Maximum flying time)...
Max Range = 111 mph * 6.5 hrs = 721.5 miles. (but the posted cruising speed looks to be too low for the BMW132A, will verify against the recent investigation report (which they provided extremely accurate performance data for the '3mg4e'...))
https://www.wikiwand.com/en/2018_Ju-Air ... u_52_crash

Regarding Ju52 Fuel Consumption, I have come across values (laking proper context information to be fully usable) that range from :
* 150 L/hr/engine = 450 L/hr (for three engines) (119 US G/hr)
* 365.53L / hr (96 US G/hr)
* 69 G / hr (light load)
* 90 G / hr (full load)
* 90 G / hr (cruise speed)
* 132 kg/hr/engine = 396 kg/hr (for three engines)
* 375 L / hr (99 US G/hr)
* 102 G / hr (crude JU52 est used in the Allies' Luftwaffe fuel consumption report - March 1945, applied to all German transport aircraft and used a Flight Endurance of 5 hrs.)

(note to convert AVGAS volume to/from weight, WITE2 uses 0.75kg/L) (remember from high school, WATER 1L = 1kg (at standard temp) ? well AVGAS weighs less than water)

It actually weighs even less than the WITE2 values, approximately 0.72kg/L, but whatever ....

https://www.wikiwand.com/en/Avgas

Re: Ju52 variants

Posted: Wed Feb 15, 2023 8:18 pm
by Denniss
ATG built g6e until autumn 41, then switched to G8e and produced those until summer 44
Junkers switched from g5e to g7e in Spring 41,to g8e in autumn 41 and produced those until summer 44
Amiot in France built g10e, g8e and G14e
Pirt in Hungary built a small amount of g14e and a very small amount of g8e, both in 1944