Martin MB

1918

Back to the Virtual Aircraft Museum
  BOMBER, PASSENGER, MAILVirtual Aircraft Museum / USA / Martin  

Martin MB

The Glenn L. Martin Company was organised during World War I and produced the first successful twin-engined aeroplane of American design, as the W. F. Night Bomber or "Seven Ton" bomber. As it is generally accepted that the first bomber built for the USAAS was the MB-1 (first flown on 15 April 1918), the view can be taken that the W.F. and MB-1 are one and the same. Contemporary reports state that the W.F. was converted into the passenger and cargo-carrying Commercial type. Again it is known that one of the ten MB-1 was so converted, although a drawing of the Commercial made in 1921 shows a rounded-nose aircraft with folding outer-wing sections, single-wheel landing-gear units and open cockpit for the pilots, while the MB-1-type Commercial was actually produced with an enclosed cockpit. Nevertheless as features of the Commercial were subsequently to be found on the improved MB-2 bombers, including the revised single- instead of double-wheel landing gear units, it can be taken that the W.F. Commercial and MB-1-type Commercial or T-1 were the same aircraft. All but one of the remaining MB-1 were produced as bombers or observation aircraft, followed by four more military MB-1 for US Government air mail services. A further two were produced as torpedo bombers for the US Navy, which designated them MTB-1.

As an interim stage between the MB-1 and the later MB-2, Martin produced the MT-1 extended-wing torpedo bomber, eight of which were operated by the US Marine Corps. The MB-2 itself was powered by 313kW instead of 298kW Liberty engines and had the wing span of the MT-1 and the landing gear of the Commercial. One hundred and thirty were produced by four manufacturers, a large number as short-range NBS-1 night bombers. Bombs were carried in racks in a compartment in the fuselage, or, in the case of large bombs, on special racks or chocks directly under the fuselage. Interestingly one MB-2, fitted with super-chargers, attained an altitude of about 8,077m while carrying a pilot and three observers. A contemporary report states that, had it not been for the extreme cold and lack of fuel, a still greater altitude could have been reached. MB/NBS-1 bombers were eventually replaced in service by Keystone types.

The MB-2 is best remembered as the aircraft with which Brig-Gen William "Billy" Mitchell demonstrated the effectiveness of the bomber by sinking the stationary ex-German warship Ostfriesland. During the same demonstrations on 21 July 1921, other MB bombers and flying-boats destroyed a submarine, cruiser and destroyer.

Martin MB

Specification 
 CREW2
 PASSENGERS12
 ENGINE2 x Liberty, 295kW
 WEIGHTS
  Take-off weight5477 kg12075 lb
  Empty weight3322 kg7324 lb
 DIMENSIONS
  Wingspan21.8 m72 ft 6 in
  Length14.1 m46 ft 3 in
  Height4.3 m14 ft 1 in
  Wing area99.4 m21069.93 sq ft
 PERFORMANCE
  Max. speed172 km/h107 mph
  Range w/max.fuel2400 km1491 miles
  Range w/max payload772 km480 miles
 ARMAMENT4-5 machine-guns, 750kg of bombs or torpedos

Comments
Phil Pearce, e-mail, 14.06.2013 21:13

I think I own a prop from this aircraft. I have had it for years and now it is for sale. Accepting queries at my e-mail or phone 480-641-0015. Regards, P. Pearce

reply

Bob, 23.03.2011 16:53

hi thank you because i needed this info for a porject great site keep it up

reply

R. Borowiak, e-mail, 28.04.2009 13:25

Hello! I have bought a kit MB-2; he has as number "AS.S5195;
is the number true? I don't find in my doc. Many tks in antic .

reply

Do you have any comments?

Name    E-mail


COMPANY
PROFILE


All the World's Rotorcraft


All rhe World's Rotorcraft AVIATION TOP 100 - www.avitop.com Avitop.com