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Martin Model 194

Four-Engined, Long-Range Heavy Bomber Proposal [ 1943 ]

The Martin Model 194 was a short-lived, long-ranged heavy bomber design study of the World War 2 period.

Authored By: Staff Writer | Last Edited: 03/30/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

The primary heavy bombers used by the United States Army Air Forces (USAAF) bomber squadrons of World War 2 (1939-1945) were the Consolidated B-24 "Liberator", the Boeing B-17 "Flying Fortress", and - towards the end of the war - the Boeing B-29 "Superfortress". All three were heavy hitters and hugely instrumental in bringing about an end to the war in favor of the Allies. In-between these classic designs there proved a slew of studies put forth by the usual big airplane-makers like the Glenn L. Martin Company which drew up their "Model 194" as a study.

The Model 194 appeared before the end of 1942 which, by this time, the advanced B-29 was still some months away from completing its development phase and entering service (arriving in 1944). The Model 194 was billed as a heavy bomber with inherently excellent range, able to carry an impressive war load (internally) over the vast distances required of the European and, more importantly, the Pacific campaigns.

The design was given an aerodynamically-refined shape with a rounded nose section (containing the flight deck with side-by-side seating), a tubular fuselage, and single-finned tail unit. The mainplanes were positioned near shoulder height and of straight design with tapering towards the curved tips. There was some noticeable sweepback (about 20 degrees) of the leading edges but none was used at the trailing edges. The tail unit used a large-area, rounded vertical fin (similar to that as used by the B-17 and B-29 by Boeing engineers) and these members were positioned on the fuselage below the fin itself. The general fuselage shape was of a stretched teardrop in which the rear was the tapered end. A retractable tricycle undercarriage would have been featured for ground-running and, considering the weight projection of this large aircraft, all of the legs were double-tired.

As a heavy bomber, the Model 194 would have carried four engines across four nacelles embedded (in pairs) at each wing mainplane. Rather interestingly, the bomber was drawn up with the engines arranged in "pusher" configuration, the propeller units seated behind the wing's trailing edge "pushing" the aircraft through the sky. Another interesting quality of the propulsion scheme was the proposed use of contra-rotating propellers at each engine for additional driving force (two three-bladed propeller units for a total of six blades at each engine. Another alternative design of this aircraft was to have the engines arranged in a more traditional "puller" / "tractor" approach.©MilitaryFactory.com
For standard armament, the bomber was to have two remotely-controlled dorsal turrets seated inline, one fore and the other aft, and each position was to be outfitted with 4 x 0.50 caliber Browning Heavy Machine Guns (HMGs). Another remotely-controlled turret was positioned under the frontal section of the fuselage, also showcasing 4 x 0.50 caliber HMGs. The tail was home to 2 x 37mm autocannons to protect the aircraft's more vulnerable "six". This meant that the large aircraft would carry no fewer than twelve machine guns and two autocannons in four gun positions.

Using the B-29's capability as a guide, the bombload of Martin's Model 194 would have been in excess of 20,000lb, most likely between 20,000lb and 30,000lb. The bomb bay was to take up most of the internal volume of the aircraft and consist of two individual spaces at the ventral fuselage line.

Choice of engine make, model, and output power was not defined in the design study from what is known of this Martin proposal. Performance estimates can, however, be garnered by observing its contemporary, the aforementioned B-29 from Boeing, with a maximum speed going beyond 350 miles-per-hour, a range between 3,000 and 5,000 miles, and a service ceiling between 30,000 feet and 35,000 feet (requiring pressurization of crew spaces). Rate-of-climb would have been near 1,000 feet-per-minute.

Specifications included an overall length of 119 feet, a wingspan of 171 feet, and a height of 31 feet (author's estimate).

As with other proposed, advanced aircraft projects of the World War 2 period, the Martin Model 194 was not evolved beyond its design study, leaving its capabilities and impact on the war to the imagination.©MilitaryFactory.com
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Service Year

United States national flag graphic
United States

Development Ended.


Glenn L. Martin Company - USA
(View other Aviaton-Related Manufacturers)
National flag of the United States United States (cancelled)
(OPERATORS list includes past, present, and future operators when applicable)
Ground Attack (Bombing, Strafing)
Ability to conduct aerial bombing of ground targets by way of (but not limited to) guns, bombs, missiles, rockets, and the like.
X-Plane (Developmental, Prototype, Technology Demonstrator)
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.

119.8 ft
(36.52 m)
171.1 ft
(52.15 m)
31.0 ft
(9.45 m)
Empty Wgt
77,162 lb
(35,000 kg)
134,482 lb
(61,000 kg)
Wgt Diff
+57,320 lb
(+26,000 kg)
(Showcased structural values pertain to the base Martin Model 194 production variant)
Installed: 4 x Engines of unknown make, model, and output power each used to drive 2 x Three-bladed propeller units in contra-rotating fashion.
Max Speed
373 mph
(600 kph | 324 kts)
32,808 ft
(10,000 m | 6 mi)
3,293 mi
(5,300 km | 9,816 nm)
1,000 ft/min
(305 m/min)

♦ MACH Regime (Sonic)
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030

(Showcased performance specifications pertain to the base Martin Model 194 production variant. Performance specifications showcased above are subject to environmental factors as well as aircraft configuration. Estimates are made when Real Data not available. Compare this aircraft entry against any other in our database or View aircraft by powerplant type)
4 x 0.50 caliber Browning M2 Heavy Machine Guns (HMGs) in forward remote-controlled dorsal turret.
4 x 0.50 caliber Browning M2 HMGs in aft remote-controlled dorsal turret.
4 x 0.50 caliber Browning M2 HMGs in ventral remote-controlled turret.
2 x 37mm autocannons in tail turret.

Between 20,000lb and 30,000lb of internally-held stores consisting of conventional drop bombs.

Supported Types

Graphical image of an aircraft medium machine gun
Graphical image of an aircraft heavy machine gun
Graphical image of an aircraft automatic cannon
Graphical image of an aircraft conventional drop bomb munition

(Not all ordnance types may be represented in the showcase above)
Hardpoint Mountings: 0

Model 194 - Base Project Designation; design study completed.

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