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Martin Model 179

Twin-Engine Medium Bomber Proposal

Martin Model 179

Twin-Engine Medium Bomber Proposal

OVERVIEW
SPECIFICATIONS
ARMAMENT
VARIANTS
HISTORY
IMAGES
Overview



No prototypes of the Martin Model 179 were ordered for the project that led to the classic Martin B-26 Marauder medium-class, twin-engined bomber aircraft for the USAAC.
National Flag Graphic
ORIGIN: United States
YEAR: 1939
STATUS: Retired, Out-of-Service
MANUFACTURER(S): Martin Aircraft - USA
PRODUCTION: 0
OPERATORS: United States
National flag of United States
USA
Technical Specifications



Unless otherwise noted the presented statistics below pertain to the Martin Model 179 model. Common measurements, and their respective conversions, are shown when possible.
CREW: 5
POWER: 2 x Pratt & Whitney R-2800-5 air-cooled radial piston engines developing 1,850 horsepower OR 2 x Wright R-2600 air-cooled radial piston engines developing 1,700 horsepower each driving four-bladed propeller units.
ADVERTISEMENTS
LENGTH

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WIDTH / SPAN

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HEIGHT

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SPEED (MAX)

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CEILING

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RANGE

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Armament



PROPOSED:
Various defensive positions armed with machine guns including a dorsal, nose, and tail mounting.

Up to 3,000lb of internally-held drop-ordnance to include conventional drop bombs of various sizes (1 x 2,000lb; 2 x 1,000lb; 8 x 600lb; 8 x 300lb).
Graphical image of an aircraft medium machine gun
Graphical image of an aircraft conventional drop bomb munition
Variants / Models



• Model 179 - Base Project Designation; no prototypes ordered/constructed; to become the in-service B-26 "Marauder" following evaluation and revisions.


History



Detailing the development and operational history of the Martin Model 179 Twin-Engine Medium Bomber Proposal.  Entry last updated on 6/5/2019. Authored by Staff Writer. Content ©www.MilitaryFactory.com.
In the early part of 1939, the United States Army Air Corps (USAAC) drew up plans for a new generation of medium bomber types that were rather recently embodied by the Douglas B-18 "Bolo" and B-23 "Dragon" forms (the Dragon essentially becoming an evolution of the Bolo). The Specification of March 1939 called for a twin-engined form flying at speeds of 300 miles-per-hour out to a range of 2,000 miles all the while carrying a bomb load of up to 3,000lb.

The requirement was eventually fulfilled by two of the more classic design forms of World War 2 - the North American B-25 "Mitchell" (the NA-62) and the Martin B-26 "Marauder" (the Model 179). Both excelled in their given roles and the designs were considerably evolved from their original offerings to help fulfill wartime requirements.

However, before the Model 179 would become the excellent B-26, it underwent a period of constant change. As early as July 1939, the aircraft was a twin-engined design of portly appearance with a deep, rounded fuselage. The fuselage's nosecap was completely glazed over and the cockpit (also heavily framed) was stepped (consistent with the final-form, in-service B-26 still to come). The aircraft was given a twin-rudder fin tail unit set slightly ahead of the tapered, terminating end of the fuselage. The wing mainplanes sat shoulder-mounted atop the fuselage and each carried an underslung engine nacelle, the engines used to drive four-bladed propeller units with oversized spinners. The undercarriage was a rather modern tricycle formation in which the main legs retracted into the engine nacelles and the nose leg into the underside of the forward fuselage. A crew of five would make up the operators required for the various onboard systems including pilots, flight engineer, bombardier, and gunners.

As proposed, the Model 179 had an overall length of 57.4 feet with a wingspan of 65 feet and a height of 14.8 feet. MTOW was rated at just over 29,000lb.

Power would come from 2 x Pratt & Whitney (PW) R-2800-5 air-cooled radial piston engines of 1,850 horsepower output or 2 x Wright R-2600 radials of 1,700 horsepower. This arrangement was to supply the medium bomber with a maximum speed of up to 325 miles-per-hour out to a range of 3,000 miles and operating at altitudes up to 26,500 feet - all exceeding the USAAC original requirements. The warload reached 2,000lb and this could be pushed as high as 2,400lb.

The Martin design was submitted for consideration on July 5th, 1939 and accepted against other supplied competitors. This resulted in a production order for 201 aircraft under the "B-26" in-service designation and, even before the actual aircraft had flown, the USAAC pushed through another production order for 930 additional bombers. By this time, the twin-tail configuration was dropped in favor of a single vertical tail fin with a pair of horizontal planes and the overall design of the aircraft was considerably streamlined for the better. In about twenty-four months, this "paper airplane" was finalized and flew into war time service - and American military aviation history - as the "Marauder" (detailed elsewhere on this site).






Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

Image of collection of graph types

Relative Maximum Speed
Hi: 400mph
Lo: 200mph
This entry's maximum listed speed (323mph).

Graph average of 300 miles-per-hour.
City-to-City Ranges
NYC
 
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  BER
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  MSK
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  TKY
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  SYD
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  NYC
Graph showcases the Martin Model 179's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production (0)
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
0
0

  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


Altitude Visualization
Small airplane graphic
Supported Roles
A2A
Interception
UAV
Ground Attack
CAS
Training
ASW
Anti-Ship
AEW
MEDEVAC
EW
Maritime/Navy
SAR
Aerial Tanker
Utility/Transport
VIP
Passenger
Business
Recon
SPECOPS
X-Plane/Development
A2A=Air-to-Air; UAV=Unmanned; CAS=Close Support; ASW=Anti-Submarine; AEW=Airborne Early Warning; MEDEVAC=Medical Evac; EW=Electronic Warfare; SAR=Search-Rescue
Commitments / Honors
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 Chaco War
Military lapel ribbon for the Cold War
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 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
* Ribbons not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective campaigns/operations.


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