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Martin Model 210


Carrierborne Single-Seat, Twin-Engine Attack Aircraft Proposal


United States | 1943



"The Martin Model 210 was unsuccessfully proposed as a carrierborne attacker for the United States Navy during the World War 2 years."



Authored By: Staff Writer | Last Edited: 08/05/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
Long-time aeroplane-maker Glenn L. Martin Company used the "Model 210" designation to cover several designs related to a United States Navy's (USN) carrierborne attack aircraft requirement. This requirement would eventually lead to the classic Douglas A-1 "Skyraider", which excelled in its role, but also spawned a myriad of proposed designs from various manufacturers. Among these was the Martin entry which, itself, branched out to cover "Model 210-1" (the focus of this article), "Model 210-1A", and the Model 210-2A - design work on the series was unveiled during August of 1943 was World War 2 (1939-1945) raged on.

The three designs differed as follows: Model 210-1 showcased twin Allison V-1710 liquid-cooled, inline piston engines while the Model 210-1A was essentially the same aircraft though set to carry a turbojet engine in the lower regions of its fuselage. The Model 210-2A was to house the Pratt & Whitney R-4360-13 "Wasp Major" and it was only this version of the three that was evolved to become the AM-1 "Mauler" in USN service - though production was cut short in favor of the Douglas Skyraider after 151 were completed.

Externally, the proposed Model 210-1 shared an uncanny resemblance with the early-war Bell P-39 "Airacobra" though obviously dimensionally larger. The single-seat cockpit, sporting a tear-drop-shaped clear-view canopy, was armored and situated slightly ahead of midships and over the straight-winged monoplanes. These wing members were low-mounted and tapered along both edges toward the rounded tips. The fuselage was streamlined from nose-to-tail with the latter showcasing a single, clipped vertical fin and low-set horizontal planes. For ground-running, or in this case deck-running, the aircraft was to have the same tricycle landing gear arrangement (two main legs, one nose leg - all-retractable), the main legs recessing into the wings and the nose leg collapsing rearwards towards fuselage centerline. The aircraft was drawn up with a running length of 51.4 feet and a wingspan reaching 51.11 feet.

The inclusion of two Allison inline engines was a unique design approach for this proposed attacker: the V-1710 inline engines were held in separate compartments, one positioned forward and the other positioned aft of the pilot's location. These would be used collectively to drive 2 x Three-bladed propeller units at the nose in "contra-rotating" fashion - maximizing drive power while also eliminating the natural torque of a single engine.

As with other naval-minded combat aircraft of the period, the Model 210-1 was to feature a folding-wing quality at its mainplanes, the members hinged outboard of the fixed, forward-firing armament.

This armament was to include 4 x 20mm autocannons buried in the wings, two guns to a wing member and installed just inboard of the wing-folding gear. In addition to this, the aircraft was drawn up with a torpedo-carrying capability, a 2,000lb Mk 13 torpedo series weapon could be slung under the belly. It is assumed that this attacker would also have carried aerial rockets and conventional drop bombs to assail various on-water or on-land targets as needed - a multirole nature was an inherent requirement of such combat aircraft types.

Like other proposals pushed at the USN during this period, the Martin Model 210 was not furthered beyond company drawings.

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Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Martin Model 210 Carrierborne Single-Seat, Twin-Engine Attack Aircraft Proposal.
2 x Allison V-1710 liquid-cooled inline piston engine developing 1,200 horsepower (estimated) each and driving 2 x Three-bladed propeller units at the nose in contra-rotating fashion.
Propulsion
348 mph
560 kph | 302 kts
Max Speed
27,559 ft
8,400 m | 5 miles
Service Ceiling
1,553 miles
2,500 km | 1,350 nm
Operational Range
1,700 ft/min
518 m/min
Rate-of-Climb
City-to-City Ranges
Operational range when compared to distances between major cities (in KM).
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Martin Model 210 Carrierborne Single-Seat, Twin-Engine Attack Aircraft Proposal.
1
(MANNED)
Crew
51.3 ft
15.65 m
O/A Length
51.1 ft
(15.57 m)
O/A Width
16.9 ft
(5.15 m)
O/A Height
15,432 lb
(7,000 kg)
Empty Weight
26,455 lb
(12,000 kg)
MTOW
Design Balance
The three qualities reflected below are altitude, speed, and range. The more full the box, the more balanced the design.
RANGE
ALT
SPEED
Armament
Available supported armament and special-mission equipment featured in the design of the Martin Model 210 Carrierborne Single-Seat, Twin-Engine Attack Aircraft Proposal .
PROPOSED, FIXED, STANDARD:
4 x 20mm Automatic cannons (two cannons per wing inside of wing-folding mechanism).

PROPOSED, OPTIONAL:
1 x 2,000lb Aerial torpedo or equivalent in conventional drop bombs and possibly aerial rockets.
Variants
Notable series variants as part of the Martin Model 210 family line.
Model 210 - Internal Company Designation for design series.
Model 210-1- Inline-powered version.
Model 210-1A - Model 210-1 with turbojet engine added to lower aft section of fuselage.
Model 210-2A - Radial-powered design to become the XBTM-1 "Mauler" prototype.
Operators
Global customers who have evaluated and/or operated the Martin Model 210. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 0 Units

Contractor(s): Glenn L. Martin Company - USA


[ Untied States (abandoned) ]
Relative Max Speed
Hi: 400mph
Lo: 200mph
Aircraft Max Listed Speed (348mph).

Graph Average of 300 MPH.
Era Crossover
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030
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1 / 1
Image of the Martin Model 210
Image copyright www.MilitaryFactory.com; No Reproduction Permitted.

Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
GROUND ATTACK
ANTI-SHIP
MARITIME / NAVY
X-PLANE
Recognition
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Going Further...
The Martin Model 210 Carrierborne Single-Seat, Twin-Engine Attack Aircraft Proposal appears in the following collections:
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