Loire-Nieuport LN.401/LN.411 (LN.40)

Carrierborne Dive Bomber Aircraft [ 1939 ]

The LN.401 was delivered in limited quantity to the French Navy and saw heavy losses in the German invasion of France.

Authored By: Staff Writer | Last Edited: 05/15/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

Front left side view of the Loire-Nieuport LN.401 at rest

VIEW SPECIFICATIONS [+]

The Loire-Nieuport LN.40/LN.401 series of aircraft was a carrier-based dive bomber developed for the French Navy prior to World War 2. First flight was achieved in 1938 and the system was introduced into service the year following. Some twenty-three examples were available by the time of the German invasion of France and subsequent actions proved the LN.401 wholly outclassed by her German adversaries. Only 68 of its type were ever produced and the aircraft ceased all further development and production after the fall of France from May 1940 onwards.

Origins of the LN.40/LN.401 stemmed from the development of the Nieuport 140. Nieuport made a name for itself by producing some memorable fighter designs in the First World War. Development on the Nieuport 140 had begun sometime in 1932 and this aircraft was intended for the French Navy as a dive bomber with a crew of two. In 1933, Nieuport became a part of Loire and the company name of "Loire-Nieuport" was officially born. In the same vein, the Nieuport 140 now became the "Loire-Nieuport LN.140". Evaluation of the design continued until a pair of accidents - resulting in the deaths of her pilots - doomed the project in whole.

All was not lost, however, for the firm moved to develop the more modern single-seat LN.40 dive bomber to fulfill the French Navy request. By 1937, the French government signed an order for Liore-Nieuport to deliver a working prototype of their LN.40 as well as preproduction aircraft for active evaluation. The first LN.40 took to the skies on July 6th, 1938 and carrier landings on the Bearn completed with success. Despite some inherent deficiencies in the basic design - some of which were rectified including the deletion of the tail dive brakes - the type was decreed operational and deliveries soon followed under the new production designation of LN.401. Production was handled by SNCAO ("Societe nationale des constructions aeronautiques de l'ouest"), an organization born from the merging of Breguet and Loire-Nieuport factories in 1936. SNCAO was itself absorbed into Sud-Ouest (SNCASO) in 1941 and eventually became Sud Aviation in 1957.

Escadrille AC.1 units of the French Navy received four LN.401s in the middle of 1939 for training. In practice, the LN.401 proved decidedly slower than the French were expecting. As a result, a newer and faster platform fitted with a Hispano-Suiza 12Y-51 engine and a shorter wingspan was signed off on and set under the designation of LN.42. While development of this aircraft was underway, orders for the navalized LN.401 ramped up. The French Army placed their order for the land-based variant known under the designation of LN.411. As can be expected, this particular model did away with the navalized aspects of the LN.401 including the folding wings and arrestor hook. Like the French Navy, the French Army was none too thrilled about their slow dive bomber and rejected them. These were relocated to the stables of the French Navy. The LN.42 development continued for a time, initially hidden away from the German invaders, and ultimately test-flown on August 24th, 1945 at Toussus-le-Noble. Regardless, the LN.42 eventually fell to the scrapman's torch and was destroyed in 1947.©MilitaryFactory.com

Externally, the LN.401 maintained a unique appearance. She held her engine in a forward compartment providing the aircraft with a modern streamlined look. The cockpit was set just aft of the engine and atop the inverted gull monoplane wings. The pilot say under a three piece canopy offering decent views all around. The fuselage continued the streamlined appearance and was capped by a conventional empennage featuring a single vertical tail fin and a pair of horizontal planes each sporting smaller vertical fins. All tail surfaces were clipped and featured sharp edges and the main vertical fin was originally designed to split open and act as an airbrake during dives. The undercarriage was a traditional "tail-dragger" arrangement with two main landing gear legs and a diminutive tailwheel. The main legs semi-recessed under each wing assembly into contoured nacelles. Armament was limited to a pair of 7.5mm Darne machine guns and a single 20mm cannon as well as a bomb load of up to 496lbs (single bomb).

Four major variants of this aircraft appeared. The first was the base LN.40 which represented some seven pre-production aircraft. The LN.401 was the French Navy dive-bomber designation to which some fifteen examples were produced. The LN.411 was a land-based version of the LN.401 sans its navalized equipment for the French Army. Forty-five of this type were ultimately produced. The LN.402 was a single example variant fitting a more powerful Hispano-Suiza 12Y series engine. First flight was achieved on November 18th, 1939.

The LN.401 was powered by a single Hispano-Suiza 12XCrs 12-cylinder vee engine delivering up to 690 horsepower and powering a three-bladed propeller system. Maximum speed was 236 miles per hour with a range of 745 miles. The service ceiling was listed at 31,170 feet.

Once in action against the Germany in the north of France, the LN.401/LN.411 was seemingly doomed to failure. She was assigned to two escadrilles (or squadrons) - the first being AB.2 and second became AB.4 from the rejected French Army systems - at the time of the invasion. In a much-publicized attack occurring on May 19th, 1940, twenty LN.401s/LN.411s were launched against German columns with ten of these being shot down and a further seven damaged beyond repair. Surviving units were relocated to the south of France where they continued the fight against Italian forces via reconnaissance and naval escort sorties. Other aircraft made their way to North Africa and were put into storage.

As France ultimately capitulated, June 1940 signified the signing of the armistice with Germany - in effect killing any further legacy for the LN.401/LN.411.©MilitaryFactory.com

Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.

Specifications

Societe nationale des constructions aeronautiques de l'ouest (SNCAO) - France
Manufacturer(s)

France
Operators

1939
Service Year

France
National Origin

Retired
Project Status

1
Crew

68
Units

GROUND ATTACK
Ability to conduct aerial bombing of ground targets by way of (but not limited to) guns, bombs, missiles, rockets, and the like.

CLOSE-AIR SUPPORT
Developed to operate in close proximity to active ground elements by way of a broad array of air-to-ground ordnance and munitions options.

SPECIAL-MISSION: ANTI-SHIP
Equipped to search, track, and engage enemy surface elements through visual acquisition, radar support, and onboard weaponry.

MARITIME / NAVY
Land-based or shipborne capability for operating over-water in various maritime-related roles while supported by allied naval surface elements.

INTELLIGENCE-SURVEILLANCE-RECONNAISSANCE
Surveil ground targets / target areas to assess environmental threat levels, enemy strength, or enemy movement.

32.0 ft
(9.76 meters)
Length

45.9 ft
(14.00 meters)
Width/Span

11.5 ft
(3.50 meters)
Height

4,707 lb
(2,135 kilograms)
Empty Weight

6,224 lb
(2,823 kilograms)
Maximum Take-Off Weight

+1,517 lb
(+688 kg)
Weight Difference

1 x Hispano-Suiza 12XCrs 12-cylinder vee engine developing 690 horsepower.
Propulsion

236 mph
(380 kph | 205 knots)
Max Speed

31,168 ft
(9,500 m | 6 miles)
Ceiling

746 mi
(1,200 km | 648 nm)
Range

MACH Regime (Sonic)

Sub

Trans

Super

Hyper

HiHyper

ReEntry

♦

STANDARD:
1 x 20mm cannon
2 x 7.5mm Darne machine guns in wings

OPTIONAL:
1 x 496lb bombs

1
Hardpoints

LN.40 - Preproduction Models; 7 examples produced.

LN.401 - Initial Production Models; folding wings; arrestor hook; 15 examples produced.

LN.411 - De-navalized version sans all Navy-installed gear (folding wings, arrestor hook); 45 examples produced.

LN.402 - Single Production Example; fitted with Hispano-Suiza 12Y series engine.

Military lapel ribbon for Operation Allied Force

Military lapel ribbon for the Arab-Israeli War

Military lapel ribbon for the Battle of Britain

Military lapel ribbon for the Battle of Midway

Military lapel ribbon for the Berlin Airlift

Military lapel ribbon for the Cuban Missile Crisis

Military lapel ribbon for pioneering aircraft

Military lapel ribbon for the Falklands War

Military lapel ribbon for the French-Indochina War

Military lapel ribbon for the Golden Age of Flight

Military lapel ribbon for the 1991 Gulf War

Military lapel ribbon for the Indo-Pak Wars

Military lapel ribbon for the Iran-Iraq War

Military lapel ribbon for the Korean War

Military lapel ribbon for the 1982 Lebanon War

Military lapel ribbon for the Malayan Emergency

Military lapel ribbon representing modern aircraft

Military lapel ribbon for the attack on Pearl Harbor

Military lapel ribbon for the Six Day War

Military lapel ribbon for the Soviet-Afghan War

Military lapel ribbon for the Spanish Civil War

Military lapel ribbon for the Suez Crisis

Military lapel ribbon for the Ukranian-Russian War

Military lapel ribbon for the Vietnam War

Military lapel ribbon for Warsaw Pact of the Cold War-era

Military lapel ribbon for the WASP (WW2)

Military lapel ribbon for the World War 1

Military lapel ribbon for the World War 2

Military lapel ribbon for the Yom Kippur War

Military lapel ribbon for experimental x-plane aircraft

Images

1 / 4

Image of the Loire-Nieuport LN.401/LN.411 (LN.40)

Front left side view of the Loire-Nieuport LN.401 at rest

2 / 4

Front right side view of the Loire-Nieuport LN.401

3 / 4

Rear left side view of the Loire-Nieuport LN.401; note distinct tail arrangement

4 / 4

Right side view of an Loire-Nieuport LN.401 at rest

❮ ❯

Disclaimer | Privacy Policy | Cookies

2024 Military Pay Chart Military Ranks DoD Dictionary Conversion Calculators Military Alphabet Code Military Map Symbols

The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com. No A.I. was used in the generation of this content; site is 100% curated by humans.

Part of a network of sites that includes GlobalFirepower, a data-driven property used in ranking the top military powers of the world, WDMMA.org (World Directory of Modern Military Aircraft), WDMMW.org (World Directory of Modern Military Warships), SR71blackbird.org, detailing the history of the world's most iconic spyplane, and MilitaryRibbons.info, cataloguing military medals and ribbons. Special Interest: RailRoad Junction, the locomotive encyclopedia.

©2023 www.MilitaryFactory.com • All Rights Reserved • Content ©2003-2023 (20yrs)