Liore et Olivier

Hi all,

there is my list about Liore et Olivier aircraft. If you can fill the gaps, please, do it...

( Sorry only in german )

LeO. 1 Versuchsflugzeug 1909
LeO. 2 Versuchsflugzeug 1910
LeO. 3 Jagdflugzeug Projekt 1917
LeO. 4 Aufklärungsflugzeug Projekt 1917
LeO. 5 Erdkampfflugzeug 1919
LeO. 6 ( LeO. H. 6 ) Amphibienflugboot 1920
LeO. 7 Mehrzweckkampfflugzeug 1922
LeO. 8 Aufklärungsflugzeug 1923
LeO. 9 Jagdflugzeug 1923
LeO. 10 ( LeO. H. 10 ) Aufklärungsflugzeug 1923
LeO. 11 Aufklärungsflugzeug 1923
LeO. 12 Bombenflugzeug 1924
LeO. 13 ( LeO. H. 13 ) Reiseflugboot 1922
LeO. 14 ( LeO. H. 14 ) Reiseflugboot Projekt 1925
LeO. 15 ( LeO. H. 15 ) Reiseflugboot 1926
LeO. 16
LeO. 17
LeO. 18 ( LeO. H. 18 ) Mehrzweckflugboot 1928
LeO. 19 ( LeO. H. 19 ) Reiseflugboot 1926
LeO. 20 Bombenflugzeug 1926
LeO. 21 Verkehrsflugzeug 1926
LeO. 22 ( LeO. H. 22 ) Postflugboot 1931
LeO. 23 ( LeO. H. 23 ) Patrouillenflugboot 1930
LeO. 24 ( LeO. H. 24 ) Verkehrsflugboot 1929
LeO. 25 ( LeO. H. 25 ) Mehrzweckkampfflugzeug 1930
LeO. 26
LeO. 27 ( LeO. H. 27 ) Postflugboot 1930
LeO. 28
LeO. 29
LeO. 30 Bombenflugzeug 1933

...

LeO. 31
LeO. 32
LeO. 33
LeO. 34
LeO. 35
LeO. 36
LeO. 37
LeO. 38
LeO. 39
LeO. 40 Reiseflugzeug 1932
LeO. 41 Versuchsflugzeug 1932
LeO. 42 ( LeO. H. 42 ) Mehrzweckflugboot Projekt 1932
LeO. 43 ( LeO. H. 43 ) Beobachtungsflugzeug 1934
LeO. 44 ( LeO. H. 44 ) Aufklärungsflugboot Projekt 1936
LeO. 45 Bombenflugzeug 1937
LeO. 46 ( LeO. H. 46 ) Aufklärungsflugzeug 1936
LeO. 47 ( LeO. H. 47 ) Postflugboot 1936
LeO. 48 Forschungsflugzeug 1941
LeO. 49 ( LeO. H. 49 ) Verkehrsflugboot Projekt 1936
LeO. 50 ( SNCASE SE.100 ) Jagdflugzeug Projekt 1938

Thanks for sharing, Maveric, but the "Sorry, only in German" bit is no longer an argument now that we have that great tool called Google Translate! That's how I turned the Vega Model Numbers list into English and since this LeO list is not too long, translating the stuff could be of great service, don't you think so?

@ Stargazer2006 Maybe You're right advising to use the Google Translate,
but there are so simple and obvious expressions in Maveric's list, that everybody interesting
in the aicraft history should know them ;D So Maveric, don't be sorry
Thanks very much for Your list, now I'm working hard on completing the Soviet aircraft designations,
but when I'm through with it, I'll be back to the French military airplanes.
Now my list of the Lioré et Olivier looks so :
LeO-4 ..... II R. ( ? )
LeO-5 ..... 2II– S.
LeO-12 ..... 2II– n.B.
LeO H-13 ..... 2IIL Br.Tn.
LeO H-18 ..... W Tn. ( ? )
LeO-20 ..... 2II– B.Tn.Tp.
LeO-25 ..... 2II– B.
LeO H-43 ..... 1IW R.
LeO-45 ..... 2I+ B.
LeO H-46 ..... 2IW B.T.
LeO H-49 Amphitrite ..... 6IL c.Tp.
LeO-50 ..... 2I+ c.M3.
LeO-122 ..... 2II– n.B.
LeO H-135 ..... 2IIA+ Br.
LeO H-150 ..... 3L B. ( ? )
LeO H-180 ..... 1L R. ( ? )
LeO H-190 ..... 1L R. ( ? )
LeO H-193 ..... W T. ( ? )
LeO-202 ..... 2II– B.
LeO-203 ..... 4II– B.
LeO H-204 ..... 4IIW B.
LeO-205 ..... 4II– B.
LeO-206 ..... 4II– B.
LeO-208 ..... 2II+ B.
LeO H-232 ..... 1IIA Br.
LeO H-246 ..... 4IL R.Tp.
LeO-253 ..... 2II– B.
LeO H-254 ..... 2IIW B.T.
LeO H-255 ..... 2IIW B.T.
LeO H-256 ..... 2IIW B.T.
LeO H-257 ..... 2IIW B.T.
LeO H-258 ..... 2IIW B.T.
LeO H-259 ..... 2IIW B.T.
LeO-300 ..... 4I– n.B.
LeO-301 ..... 4I– n.B.
LeO-451 ..... 2I+ B.Tp.
LeO-452 ..... 2I+ B.
LeO-453 ..... 2I+ B.Tp.
LeO-454 ..... 2I+ B.
LeO-455 ..... 2I+ B.
LeO-456 ..... 2I+ B.
LeO-458 ..... 2I+ B.
LeO H-470 ..... 4IL R.Tp.

Yes, with the "acute accent" (´ in HTML coding).

NOT to be mistaken for Loire (no accent, please note the inverted vowels), the longest French river which basically separates France in two horizontally and whose name can also be found in aviation related documents.

Hi,

for LeO-40 and LeO-41,please see;

http://www.secretprojects.co.uk/forum/index.php/topic,395.45.html

LeO-32 was a night bomber prototype to a 1924 specification.
The 1926 LeO-122 mentioned by Boogie led to the LeO-20 series.

Frédriksen - International warbirds: an illustrated guide to world military aircraft, p.199

Apophenia said:

LeO-32 was a night bomber prototype to a 1924 specification.
The 1926 LeO-122 mentioned by Boogie led to the LeO-20 series.

Frédriksen - International warbirds: an illustrated guide to world military aircraft, p.199

Click to expand...

My dear Apophonia,

do you mean 1934 ?,that is becuase the LeO-30 and LeO-301 were appeared
in 1933.

Hesham, Frédriksen said that it was a 1924 night bomber competition. Comparisions were made between the LeO-32 and the slightly earlier Farman F.60 Goliath.

Hi all,

the LeO.34 = LeO. C.34 autogyro ???

But then, we have a double designation: LeO. 300 bomber and LeO. C.30 autogyro (licenced Cierva C.30A).

Apophenia said:

Hesham, Frédriksen said that it was a 1924 night bomber competition. Comparisions were made between the LeO-32 and the slightly earlier Farman F.60 Goliath.

Click to expand...

Thank you my dear Apophenia,

and also the Bleriot-103 and Bleriot-113 were involved in this BN.4 competition.

The LeO 49 became SE.200.
http://www.flightglobal.com/pdfarchive/view/1938/1938%20-%200582.html

Hi,


H-16 was a twin engined torpedo bomber project,for 1928 competition;


http://www.secretprojects.co.uk/forum/index.php/topic,4843.msg177962.html#msg177962

The LeO 50 was the last design of that company, and was redesignated as the S.E.100, as explained in Air International dated April 1985.

Apophenia said:

LeO-32 was a night bomber prototype to a 1924 specification.
The 1926 LeO-122 mentioned by Boogie led to the LeO-20 series.

Frédriksen - International warbirds: an illustrated guide to world military aircraft, p.199

Click to expand...

My dear Apophenia,


here is the page which spoke about LeO-32,from the same source,and in TU,there is unknown LeO Project for BN.3,a three seat night bomber,with 5 machine-guns and 950 kg bombs and a 600 km range,and maybe that's it,via my dear Tophe.

A bit more detail on LeO 45 series designations ...

For the LeO 45 series, Lioré-et-Olivier followed the typical French pattern of adding a number for major variant changes. Further numerals were added for prototypes and production sub-type variants ... so, LeO 458.01 was the first prototype of the eighth variant; LeO 458.1 was the first production variant (although there could be more than one batch of each variant).

Some variants and modifications were given letters instead. The variant letters that apply to the LeO 45 series are as follows:

C --- Commercial
E --- Essais (Test)
LC -- Long Courrier (Long-range courier)
M --- Marine (Navy)
P --- Photographic (Photo)
Ph -- Photographique (Photo)
T --- Transport

One puzzle comes from a decision to end Aéronavale's slow-moving 1937 Hydravion éclaireur de combat (Combat scout seaplane) program in favour of torpedo-carrying Leo 451s. Were torpedo racks to be fitted to the LeO 456/LeO 451M? Or does this refer to the Navy's unmodified LeO 451s? Or to the unordered LeO 458M (of which Aéronavale wanted 300)?

________________________________

Lioré-et-Olivier LeO 45 Series Designations

LeO 45 - Hispano-Suiza 14AA-powered medium bomber
- LeO 45.01: 2 x 1,080 hp HS 14AA 06/07, NACA cowlings
-- LeO 45.01: Early 1938, fitted with revised cowlings
-- LeO 45.01: Aug 1938, LeO 45.01 fitted with GR 14Ns
- LeO 450: (Project) Planned prod. vers., cancelled

Leo 451 - Gnome-Rhône 14N-powered medium bomber
- LeO 451.01: Oct 1938 LeO 45.01 with GR 14Ns flown
- LeO 451 B4: March 1939 GR 14N prod'n model, x 749
-- LeO 451 No.1: 2 x GR 14N 20/21 'handed' engines
-- LeO 451 No.2: 2 x GR 14N 39 LH rotation engines
-- Leo 451.01GS: Groupe Standard conv., see Leo 455
-- NB: Many undesignated trials a/c, see below
- LeO 451 Grec: [Speculative desig.] March 1939 x 12
- LeO 451C: Various commercial conversion proposals
-- LeO 451C: [Project] 1943 4-6 pax, wing bay freight
-- LeO 451C: [Project] 1943 14 pax, aka 'LeO 451C-14'
-- LeO 451C: [Project] 1944 21 pax, aka 'LeO 451C-21'
-- LeO 451C: x 12 postwar Air France 451 B4 conversions
- LeO 451DC: (Double Commande) Dual-control conv.
- LeO 451DC: Spring 1940 conversion of Leo 451 B4 N°167
- LeO 451E: (Essais) 3* x postwar flying test-bed conv.
-- * 3 x flying lab/test-beds, 7 other test-bed a/c**
-- ** These include LeO 451 BHT, Essais series, and (?)
-- LeO 451BHT: (Bombe Hurel-Turck) BHT 38 guided-bomb
-- E1: Heat recovery exchangers/aerodym. impr. study
-- E2: Engine development study
-- E3: Parachute drop studies
-- E4: Aerodynamic study of vertical-tail profile
-- E5: Icing protection study
-- E6: (??) No details
-- E7: Study of dropping guided-bombs or 'shapes'
-- E8: Pulsejet (pulso-réacteur)/ramjet (stato-réacteur) devel.
-- E9: Development of remote-control & automated guidance
- Leo 451 EMGA: LeO 451C transport/training conv, x ~20
-- EMGA = Établissement du Matériel du Génie de l'Air
- LeO 451LC: (Project) 1942 Long Courrier
-- Revised wings, for 500 kg of freight over 4,500 km
- LeO 451LC: Intended for Outre-Mer territory links
-- Interrupted by the German invasion of Vichy France
- LeO 451LC: (Project) 194(?) Long Courrier
-- Reinitiated project, later redesignated LeO 459
- LeO 451LC: Low-altitude optimised GR 14N-44/N-45s
- LeO 451M: (Marine) originally designated LeO 456 (qv)
- LeO 451M: Flotation bags and wing cells for Aéronavale
- LeO 451-SO: (Project) Bureau d'études de St-Nazaire studies
-- Intended to simplify & speed-up the production of LeO 45s
- LeO 451-SO: 1940 St-Nazaire bureau study, then part of SNCAO
- LeO 451-SO: 1941(?) study, St-Nazaire group now part of SNCASO
- LeO 451T: 1943 Luftwaffe tanker/transport conv.***
-- *** LeO 451T may have been purely a Luftwaffe desig.

LeO 452 - (Project) 1938 uprated HS 14AA-powered bomber
- LeO 452 (I) : Pre-prod'n ac, 2 x 1,150 hp HS 14AA 12/13
- LeO 452 (II): 19(??) prototype conv. w/ unhanded engines
- LeO 452 (II): 2 x 950 hp Gnome-Rhône 14N-38 radials
-- Prototype trials inconclusive, variant is abandoned

LeO 453 - P&W Twin Wasp-powered variant/LeO 451 conv.
- LeO 453 : (Project) 1939, with alternative US engines
-- LeO 453: Construction begun, not complete in June 1940
- LeO 453 : 1946-1947 conversions to P&W R-1830-43, x 40
- Leo 453E: (Essais) 2 x LeO 453L missile-carrier conv.
-- aka E10, launch/mother a/c for exper'l guided missiles
- Leo 453L: (Liaison) main LeO 453 variant, x 24 built
- Leo 453P: (Photographic) for France's IGN,* x 4
-- * Institut Géographique National, qv LeO 455Ph conv.
- Leo 453P: 2 x 1,200 hp higher-altitude P&W R-1830-67s
Leo 453S: (Sauvetage) Search-and-Rescue variant, x 12

LeO 454 - (Project) Bristol* Hercules-powered LeO 451
-- * But to be built under license by SIGMA near Lyon
- LeO 454.01: Prototype (not completed), Hercules II
- LeO 454.1 : SIGMA Hercules II in Bristol cowlings
-- Trait d'Union says Hercules III (delivering 1,400 hp)
- LeO 454.2 : SIGMA Hercules III in Mercier cowlings
-- Trait d'Union says Hercules VI (delivering 1,650 hp)

LeO 455 - 1939 GR 14R-powered* bomber and later conv.
- LeO 455 : 2 x 1,250 hp Gnome-Rhône 14R-0/R-1 radials
-- 1,250 hp @ 5,000 m, 400 x LeO 455 ordered 1939-40
-- * GR 14R had 2-stage blower & sep. auxil/ gearbox
- LeO 455.01: 1939, sole prototype built as LeO 455
- LeO 455.01: Dec 1939, Ratier 1733.1734 propellers
- LeO 455.01: Feb 1940, modified Ratier propellers
- LeO 455.01: Mar 1940, ventral fin fitted
- LeO 455.01: May 1940, fin deleted, Mercier props
- LeO 455.01: June 1940, 'GS' engines, redesig'd**
-- ** Redesignated LeO 451.01GS (Groupe Standard)
-- LeO 451.01GS: Long engine-bearers, enlarged tail
- LeO 455 : Postwar modifications into Leo 451 B4s
-- LeO 455 : Engine test-bed conv. for SNEMCA, x 3
-- LeO 455Ph: Photo-survey Leo 451 conv'ns,*** x 5
-- *** For use by Institut Géographique Nationale
-- aka Leo 455P according to Trait d'Union

LeO 456 - Aéronavale vers, redesignated LeO 451M
- LeO 456: Minimal diff. with Leo 451,* 68 x ordered
-- * Hence the redesignation to Leo 451M (Marine)

LeO 457 - (Project) 3-seat high-altitude version*
- * Slimmer fuselage, crew grouped in press. nose
- LeO 457 : Wooden mock-up completed, work begun
- LeO 457 : 3 ordered, none completed by June 1940
- Leo 457-1 : 2 x 1,180 hp Gnome-Rhône 14N-48-N-49s
- Leo 457-1 : Construction begun but not completed
- Leo 457-2 : 2 x 1,590 hp Gnome-Rhône 14R-4/R-5s
- Leo 457 B3: 4,700 lb bombs, 6 x rear-firing 7.5mm
- Leo 457 B3: 2 x 1,200 hp Hispano-Suiza 12Y-89s*
-- * Driving 3-bladed Hispano-Hamilton propellers
-- * 'Hisbo' aka HS 12Z, Brown-Boveri turbochargers
-- * Brown-Boveri turbos, 3-blade Hispano-Hamilton props
- Leo 457 B3: Alternative, 2 x 1,145 hp R-R Merlin X
-- Leo 457 concept led to entirely new Sud Est SE 012
-- Design process led, incrementally to Sud Est SE 012

LeO 458 - (Project) Double Cyclone*-powered bomber
- LeO 458-1: Begun Spring 1940, not completed
- LeO 458-1 : 1,600 hp GR-2600-A5B, 34 x ordered
- LeO 458-2 : Hamilton-Standard props, x 60 ordered
- LeO 458-3 : Curtiss electric props, x 465 ordered
- LeO 458M : (Marine), Aéronavale variant
-- * aka Wright Cyclone 14, double-row radial
-- Plans for 300 x LeO 458M but no order was placed

LeO 459 - (Project) Long-range* courier LeO 451 conv.
- LeO 459: Redesignated LeO 451LC (Long Courrier)
- LeO 459: Low-altitude optimised GR 14N-44/N-45s
-- LeO 459 Long Courrier range was to be 4,500 km

____________________________________________________


Undesignated LeO 451 Experimental Airframes

- LeO 451 N° 51 : Experimetal enlarged fins/rudders*
-- * After 1941, made standard for all LeO 451s
- LeO 451 N° 242: Bloch 174-style Mercier cowlings
-- LeO 451 also tested rear-firing wobble-mount MGs
- LeO 451 degaussing ring 'minesweeper': http://www.secretprojects.co.uk/forum/index.php/topic,17803.msg169997.html#msg169997

____________________________________________________

hesham said:

Apophenia said:

LeO-32 was a night bomber prototype to a 1924 specification.
The 1926 LeO-122 mentioned by Boogie led to the LeO-20 series.

Frédriksen - International warbirds: an illustrated guide to world military aircraft, p.199

Click to expand...

My dear Apophenia,


here is the page which spoke about LeO-32,from the same source,and in TU,there is unknown
LeO Project for BN.3,a three seat night bomber,with 5 machine-guns and 950 kg bombs and
a 600 km range,and maybe that's it,via my dear Tophe.

Click to expand...

Un-solved mystery to this days,in its designation number ?.

From Onera Archive;

LeO 34 & H-34 was a landplane and seaplane Projects of 1932,obviously they were not related to C.34 autogyro ?

From Czech National Technic Museum,

LeO H-28 was a seaplane Project
LeO 32 C.1 was a single seat fighter Project

I will start the LeO aircraft list;

LeO-1 was a single seat high-wing monoplane of 1909/1910,powered by one 50 hp Renault engine
LeO-2 was a single seat high-wing monoplane of 1910/1911,powered by one 40 hp Gegoire engine,driven
two propellers through a chain drive
LeO/Sopwith ½ Strutter was a two-seat military and multi-role biplane,built under licence
LeO-3 was a single seat low-wing monoplane fighter Project,1915/1916,powered by one 300 Hispano-Suiza
engine,intended to achieve 290 km/h speed
LeO-4 was a tandem two-seat recce biplane,powered by one 200 hp Clerget 11E engine
LeO-4/I was an improved version,with more conventional wing shape,powered by the same engine
LeO-5 was a three-seat heavy armored ground attack biplane,in S2 category,powered by two 175 hp Gnome-Rhone
9R engines
LeO (S2) was a two-seat light armored recce Project,developed from LeO-5,powered by two 170 hp Renault
pusher engines
LeO H-6 was a four passenger sesquiplane flying boat,powered by three engines,two 150 hp Hispano-Suiza
8Fb mounted in the wing,and one 250 hp Salmson mounted above the front of the fuselage
LeO H-6/2 was an amphibian version of H-6,powered by the same engines
LeO-7 was three-seat multi-place bomber escort biplane,powered by two Hispano-Suiza 8Fb engines
LeO-7/2 was a improved version,with wide-track landing gear,gunner's posts in snub nose and amidships and
the pilot's cockpit immediately behind the wing trailing edge,with same engines
LeO-7/3 was a navalized version,and 12 example entered service at the Saint-Raphael base
LeO-7/4 maybe unknown variant or Project,need confirm
LeO-8 was a two-seat parasol wing night fighter monoplane,powered by one 300 hp Renault 12Fe engine
LeO-9 was a single seat low-wing fighter monoplane,powered by one 300 hp Hispano-Suiza 8Fb engine
LeO H-10 was a two-seat recce bomber float seaplane,powered by one 370 hp Lorraine 12Da engine
LeO-11 was a tandem two-seat recce biplane, a landplane version of H-10,intended to use from aircraft carrier,
powered by one 370 hp Lorraine 12Da engine
LeO-12 was a two-seat night bomber large biplane,with three-bay equal-span wings,powered by two 400 hp
Lorraine 12Db engines
LeO-121 was a 12 passenger airliner,converted from LeO-12,powered by two 400 hp Lorraine 12Db engines
LeO-122 was a improved heavy night bomber version,powered by two 420 hp 180 hp Hispano-Suiza 8Ab engines 9ab engines
LeO-123 was used on proving flights for airliner routes and to test new equipment for passenger aircraft,
powered by two 400 hp Lorraine 12Db engines
LeO H-13 was a 23 passenger transport flying boat biplane,powered by two 150 hp Hispano-Suiza 8Aa engines
LeO H-13A was a passenger carrier variant
LeO H-13B was a recce-bomber variant
LeO H-13E was a trainer variant
LeO H-131 or H-13bis was a navy recce variant,powered by two 180 hp Hispano-Suiza 8Ab engines
LeO H-132 was a version,powered by two Hispano-Suiza 8Aa engines
LeO H-133 was a version,powered by two 300 hp Renault 12F engines
LeO H-134 was a version,married the rounded hull of the H-131to the wings of H-13,powered by two 450 hp
Lorraine 12Eb engines
LeO H-135 was a military version,relocated the pilot's cockpit forward of the wings and had a bow and dorsal
gunner's cockpits,powered by two 180 hp Hispano-Suiza 8Ab engines
LeO H-136 was a version,had its pilot's cockpit behind the wing,on the lines of the earlier civil types,intended
for trainer,powered by two 180 hp Hispano-Suiza 8Ab engines
LeO H-14 was a design studies for a 5-seat version of the H-13, not completed due to lack of interest
from airlines,powered by two 180 hp Hispano-Suiza 8Ab engines
LeO H-15 was a 12 passenger flying boat,with an unequal-span biplane,powered by three 420 hp Gnome-Rhone
9Ab engines
LeO H-150 was a developed Project version of H-15,maybe with the same engines
LeO H-151 was a military Project version,a three seat bomber flying boat,maybe with the same engines
LeO H-152 was a twin engined Project version of H-151,maybe with the same engine kind
LeO H-16 was a twin engined torpedo bomber Project,intended for 1928 contest
LeO-17 maybe was a three-seat night bomber Project,in BN.3 category,need confirm
LeO H-18 was a two-seat cantilever high wing training and touring flying boat monoplane,powered
by one 120 hp Salmson 9Ac engine
LeO H-181 was an enclosed cockpit version, with increased span and longer fuselage,powered by the
same engine,postal version
LeO H-182 was also a postal version,powered by the same engine
LeO H-190 was a seven-seat transport flying boat biplane,had a single-bay biplane with un-staggered wings,
powered by one 420 hp Gnome-Rhône 9Ab engine
LeO H-190T was a production version
LeO H-191 was a trainer version,powered by one 450 hp Lorraine 12Eb engine
LeO H-192 was a version,had a modified hull with pilot's position in the bow,and amphibian landing gear,powered
by one 420 hp Gnome-Rhône 9Ab engine
LeO H-193 was a refined wing shape,a version of H-192,powered by the same engine
LeO H-193HS was a coastal patrol version,powered by one 500 hp Hispano-Suiza 12Mb engine
LeO H-193S was a coastal patrol version also,but powered by one 420 hp Gnome-Rhône 9Ab engine
LeO H-194 was a version with increased fuel capacity for long range flights,powered by one 420 hp Gnome-Rhône
9Ab engine
LeO H-195 was a military amphibian version Project,powered by one 500 hp Hispano-Suiza 12 Mb engine
LeO H-196 was a civil transport version,powered by one 420 hp Gnome-Rhône 9Ab engine
LeO H-197S was an ambulance version,powered by one 420 hp Gnome-Rhône 9Adz engine
LeO H-198 was a postal or mail-carrier flying boat/amphibian catapult-capable,powered by one 180 hp
Gnome-Rhône 9Af engine
LeO H-198/2 was a transport version of H-198,powered by one 450 hp Renault 12 Ja engine
LeO H-199/1 was a six passenger transport version,and pilot and co-pilot with dual controls in enclosed
cabin,powered by two 250 hp Hispano-Suiza 6 Mbr engines,mounted in tandem
LeO H-199/2 was a version,but powered by two 350 hp Gnome-Rhone 7Kb engines,also mounted
in tandem
LeO-20 was three-seat night bomber biplane,powered by two 420 hp Gnome-Rhone 9Ady engines
LeO-201 was a re-designation for parachute trainers converted from LeO-20,powered by the same
engines
LeO-202 was a derivative Project version,but powered by four 260 hp Salmson 9Abc engines
LeO-203 was a developed version,powered by four 300 hp Gnome-Rhone 7Kb engines,mounted in pairs
on the lower wing
LeO H-204 was a four-seat floatplane torpedo bomber version of LeO-203,powered by four 300 hp Gnome-Rhone
7Kb engines
LeO-205 was Project version,but powered by four 350 hp Renault 19Ca engines,1931
LeO-206 was a major development of LeO-203,had redesigned nose,a ventral balcony which housed the bomb-bay
and,at the rear,a defensive gun position,powered by four 350 hp Gnome-Rhone 7Kd engines
LeO-207 was a version,had smaller ventral balcony than that of the LeO-206,powered by four 360 hp
Gnome-Rhône 7Kd engines
LeO-208 was a four-seat version of LeO-20,with enclosed cabin,powered by two 770 hp Gnome-Rhône 14Kdr
engines
LeO-208/2 was a developed version of LeO-208,with different position of lower front gunner,powered by
a same two engines
LeO-21 was a civil-military transport biplane,powered by two 420 hp Gnome-Rhone 9Ab engines
LeO-21S was an ambulance version,only one built
LeO-211 was a version,powered by 450 hp Renault 12 Ja engines,redesigned as avion-bar
LeO-212 was a second prototype,powered by two 450 hp Renault 12 Ja engines
LeO-213 was a production version,powered by two 450 hp Renault 12 Ja engines
LeO-214 was a troop transport carrier version,powered by two 450 hp Renault 12 Ja engines
LeO H-22 was a two-seat high-wing touring flying boat/amphibian monoplane,powered by one 230 hp
Gnome-Rhone 5Bc engine
LeO H-221 was a three-seat trainer version of H-22,powered by one 230 hp Salmson 9Ab engine
LeO H-222 was a two-seat transport postal version,powered by one 240 hp Lorraine Mizar engines,Project
LeO H-23 was a three-seat coastal patrol amphibian/flying boat,of a cantilever high wing monoplane configuration,
powered by one 600 hp Hispano-Suiza 12N engine
LeO H-232 was a sesquiplane with an engine mounted on the upper wing,powered by one 650 hp Hispano-
Suiza 12Nbr engine
LeO H-24 was a high-wing medium transport flying boat monoplane,powered by two 500 hp Renault 12Jb
engines
LeO H-241 was an initial four-engined long-range heavy-weight variant of the H-24,powered by four 500 hp
Renault 12Jb engines
LeO H-242 was a transport version,powered by four 350 hp Gnome-Rhône 7Kd engines
LeO H-242/1 was also a transport version,powered by four 350 hp Gnome-Rhône 7Kd engines
LeO H-243 was an un-built Projected version for the French navy with enlarged hull,maybe with same
engines
LeO H-244 was a Projected high-speed inter-continental flying boat for Air Union,abandoned when Air Union was absorbed by Air France,maybe with same engines
LeO H-245 was an unknown Project
LeO H-246 was a major development version,also intended as transport aircraft,powered by four Hispano-Suiza 12Xirs
engines,all in tractor configuration
LeO-25 was a four-seat heavy night bomber biplane,powered by two 575 hp Hispano-Suiza 12Hb engines
LeO-251 was a lightweight Project version of LeO-25,powered by the same engines
LeO-252 was a re-motorized version,powered by two 500 hp Hispano-Suiza 12Mbr engines,had a large wooden
floats
LeO-253 was an export version for Brazil,powered by two 575 hp Hispano-Suiza 12Hb engines
LeO H-254 was a torpedo bomber seaplane version on floats,powered by two 500 hp Hispano-Suiza 12Mbr engines
LeO H-255 was a torpedo bomber seaplane version on floats,powered by two 690 hp Hispano-Suiza 12Xbrs engines
LeO H-256 was a torpedo bomber seaplane version on floats,powered by two 650 hp Hispano-Suiza 12Nbr engines
LeO H-257 was a torpedo bomber seaplane version on floats,powered by two 700 hp Gnome-Rhône 14Kbrs
engines
LeO H-257bis was a strengthened airframe, and enclosed nose gun position,powered by two 700 hp Gnome-Rhône 14Kirs engines
LeO H-258 was an interim version similar to H-257bis,powered by two 650 hp Hispano-Suiza 12Nbr engines
LeO H-259 was a torpedo bomber seaplane version on floats,powered by two 860 hp Hispano-Suiza 12Ydrs
engines
LeO-26 was unknown Project
LeO H-27 was a long range four-seat cantilever high-wing monoplane flying boat monoplane,powered by four
650 hp Hispano-Suiza 12 Nbr engines
LeO H-271 was a military derivative of H-27,explorer with 3000km range,Project only
LeO H-28 was an unknown seaplane Project
LeO-29 was unknown Project
LeO-300 was a five-seat cantilever high-wing BN.5 heavy night bomber monoplane,powered by four 500 hp
Renault 12Jb engines
LeO-301 was a five-seat cantilever high-wing BN.5 heavy night bomber monoplane,powered by four 650 hp
Hispano-Suiza 12Ybrs engines
LeO-31 was unknown Project
LeO-32 C.1 was a single seat fighter unknown Project
LeO-33 was unknown Project
LeO-34 was unknown landplane Project of 1932
LeO H-34 was unknown seaplane Project of 1932
LeO-35,LeO-36,LeO-37,LeO-38 & LeO-39 were unknown Projects,probably not used
LeO-40 was A two seat tourer with full span slats on both wing,as experimental biplane,powered by
95 hp Argus pusher engine
LeO-41 was a two-seat tourer experimental biplane,powered by the same engine
LeO H-42 was maritime patrol sesquiplane flying boat Project of 1932,powered by three 880 hp Gnome-Rhone
Krsd engines
LeO H-43 was a three-seat ship-based observation and scouting mid-wing seaplane,powered by one 650 hp
Hispano-Suiza 9Vb engine
LeO H-43S was a developed version,with large rudder,powered by the same engine
LeO H-431 was a version,but powered by one Gnôme-Rhône K9 engine,never produced
LeO H-440 was a high-wing long range maritime flying boat monoplane Project of 1935,powered by
four 1000 hp Hispano-Suiza 14H a engines
LeO H-440/1 was a Project version,intended for civil roles,could accommodated 20 passenger for North
Atlantic,also powered by the same engines
LeO-45 was a four-seat low-mid-wing medium bomber monoplane,powered by two 1080 hp Hispano-Suiza 14AA
engines
LeO-450 was a early intention forproduction,but the problem with engine halted it,powered by two 1080 hp Hispano-Suiza 14AA-06/07 engines
LeO-451.01 was a version,powered by two Gnome-Rhône 14N
LeO-451 was a production version variously fitted with Gnome-Rhône 14N-48 / Gnome-Rhône 14N-49 or Gnome-Rhône 14N-38 / Gnome-Rhône 14N-39 or Gnome & Rhône 14N-46 / Gnome-Rhône 14N-47 engines
LeO-451LC was a long range Project version,with 500kg load on 4500km
LeO-452 was a version,equipped by two Hispano-Suiza 14AA-12/13 engines,but in compared with
their predecessors,repeat fitted with Gnôme-Rhône 14 N-38,but abandoned,Project
LeO-453 was a version,powered by two P&W R-1830 engines,never completed
LeO-453E or E-10 was an experimental version,also powered by the same engines
LeO-453L was a liaison version,intended to carry 10 passenger,also with the same engines
LeO-453P was a photographic version,powered by P&W R-1830-43,then replaced by R-1830-67 engines
LeO-453S was a sea rescue version,on floats,also with the same engines
LeO-454.01 was a Project version,powered by two 1400 hp Bristol Hercules III engines
LeO-454.02 was a Project version,powered by two 1660 hp Bristol Hercules IV engines
LeO-455 was a high-altitude version,powered by two 1250 hp Gnôme-Rhône 14R engines
LeO-455PH was a photo-survey version,powered by the same engines
LeO-456 was a naval version,68 example were built
LeO-457 was a three-seat high-altitude version,powered by Hispano-Suiza 12Z engines
LeO-458 was a 1660 hp Wright GR-2600 A-SB Cyclone 14 engines
LeO-458.01 was begun Spring 1940, never completed
LeO-458.1 was a version,powered by two 1,600 hp Wright GR-2600-A5B engines
LeO-458.2 was a version,with Hamilton-Standard propellers
LeO-458.3 was a version,with Curtiss electric propellers
LeO-458M was a naval version
LeO-459 was a long-range courier ,developed from LeO-451,Project
LeO H-46 was a five-seat low-wing seaplane torpedo bomber,on floats,powered by two 870 hp Gnome-Rhône
14Knrs engines
LeO H-24/6 or H-246 was a developed Project maybe,mentioned Liore et Olivier book
LeO H-463 was a developed version,could carry a two torpedo and two 20mm guns,powered by two 910 hp
Gnôme-Rhône 14 Kcrs engines
LeO H-47 was a conventional high-wing transport-airliner flying boat,powered by four 860 hp Hispano-Suiza
12Ydrs engines,mounted each pair in tandem
LeO H-24/7 was a developed version,mentioned in Liore et Olivier book
LeO H-470 was a patrol and transport version,powered by four 860 hp Hispano-Suiza 12Y-34 engines
LeO H-471 was a studied Project of 1936,a long range cruising seaplane for seven crew members,five
defensive machine guns, with 20 hours autonomy and bombing capacity
LeO H-472 was a transatlantic seaplane Project of 1935,powered by four Gnôme-Rhône 9 Kfr engines,
in frontal position or all in tractor configuration
LeO-48 Apophyse was a four-seat mid-wing experimental monoplane,powered by two 140 hp Régnier 4Go engines
LeO H-49 was a heavy transatlantic airliner high-wing flying boat monoplane,later developed by SNCASE as
SE-200,
LeO H-49.1 whose wing was connected directly to the hull, without chimney, and which had a tail fin with double drift.
in this first version,the cockpit is located right in front of the edge wing attack, causing a stall the shell which therefore lowers in front
LeO H-49.2 was a military derivative of limited weight at 30 tonnes was proposed as a response from the firm on the cruise seaplane program
LeO H-49.3 was a four-engine was studied at the end of 1936, but it will not be continued no more
was studied in five versions ;
H-49A was a version,with four tractor and two pusher engines,powered by six 880 hp Hispano-Suiza 12 Ybrs engines
H-49B was a version,with six tractor engines configuration,powered by 880 hp Hispano-Suiza 12 Ybrs engines
H-49C was a version,fitted with four tractor and four pusher engines,powered by Hispano-Suiza 12 Xbrs engines
H-49D was a version,powered by eight 575 hp Junkers Diesel engines
H-49E was a version,powered by only four Gnôme-Rhône 18 L engines
LeO-50 was a two-seat heavy fighter mid-wing monoplane,powered by two 1081 hp Gnôme-Rhône 14N engines,
later developed by SNCASE as SE-100


- Any additions or corrections are welcome

I complete the list,

for my dear Apophenia,here is some pages from TU magazine,to can complete your list about LeO-45,
please notice E series.

From TU 242,

I add H-49.1.H-49.2 & H-49.3.

Autogyro series;

LeO C.30 was a license built Cierva C.30 autogyro,powered by one 175 hp
Salmson 9 Ne engine
LeO C.30S was a construction number 26 was completed as the sole C-30S
LeO C.301 was an improved C-30s with uprated Messier oleo-pneumatic
shock absorbers, flotation devices to facilitate ditching at sea and tripod
main rotor support
LeO C.302 was an early autogyros suffered from relatively long take-off
runs,to reduce the take-off length two C-301 aircraft were fitted with the equivalent of Cierva's "Jump" head allowing the aircraft to leap vertically
after only a very short run
LeO C.34 was a two-seat autogyro prototype,powered by one 350 hp Gnome
& Rhône 7-cylinder star engine
LeO C.41 was a four-seat autogyro Project,developed from C.34

Additions to the LeO 451 listings have finally be finished. Thanks hesham.