1
Martin XB-48
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DATE: 2007/03/29::
2
Martin XB-51
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DATE: 2009/09/05::
3
Martin XB 51 bombardero experimental.
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DATE: 2014/01/25::
4
Us Bomber On Test Bed (1947)
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DATE: 2014/04/13::
5
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DATE: 2013/08/05::
6
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DATE: 2015/04/16::
7
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DATE: 2015/04/11::
8
Fabio XB featuring Adina Butar - Stay (Anske Remix) (GDJB Rip) HD
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DATE: 2014/09/27::
9
Discovery Channel   Wings   North American Xb 70 Valkyrie
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DATE: 2011/10/14::
10
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DATE: 2007/06/09::
11
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DATE: 2014/07/11::
12
XB-35 Flying Wing and XB-36 Film Clips
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DATE: 2013/07/17::
13
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DATE: 2009/11/07::
14
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DATE: 2007/03/29::
15
XB 51 Martin
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DATE: 2014/02/02::
16
Douglas XB-42 Mixmaster (1945)
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DATE: 2010/11/01::
17
Fabio XB & Wach vs Roman Sokolovsky - Eternal (Official Music Video)
Fabio XB & Wach vs Roman Sokolovsky - Eternal (Official Music Video)
DATE: 2012/08/29::
18
Douglas XB-19 Taxi Testing (1941)
Douglas XB-19 Taxi Testing (1941)
DATE: 2012/03/18::
19
XB-58 Hustler First Flight
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DATE: 2010/07/01::
20
XB-24 Liberator First Flight
XB-24 Liberator First Flight
DATE: 2010/06/30::
21
XB-36 First Flight
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DATE: 2010/07/01::
22
XB-70A Valkyrie Supersonic Bomber Flight Test Program - 1968 Restored - Color
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DATE: 2014/07/30::
23
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DATE: 2010/01/20::
24
LIGHTCONVERSE AND HIGH END LIGHTING CHALLENGE - Anatoliy Gevik
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DATE: 2015/03/09::
25
ISE 2015: Harman Introduces Martin Professional
ISE 2015: Harman Introduces Martin Professional's Aura XB Light
DATE: 2015/02/12::
26
Douglas XB 43
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DATE: 2013/01/15::
27
BIG-O Multimedia Show in Yeosu International Expo, South Korea, 2012
BIG-O Multimedia Show in Yeosu International Expo, South Korea, 2012
DATE: 2013/06/10::
28
XB and Le Saux - Overture of Angels (Angels Mix)
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DATE: 2013/09/19::
29
Armin van Buuren
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DATE: 2010/01/21::
30
Unboxing Hot Wheels Basic Car 50-pack
Unboxing Hot Wheels Basic Car 50-pack
DATE: 2014/07/19::
31
Light To Lies (Gareth Emery Remix) - Fabio XB & Andrea Mazza
Light To Lies (Gareth Emery Remix) - Fabio XB & Andrea Mazza
DATE: 2010/10/07::
32
Oliver Heldens X Becky Hill - Gecko (Overdrive) [Official Video]
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DATE: 2014/05/20::
33
Boeing XB-52 Stratofortress (1952)
Boeing XB-52 Stratofortress (1952)
DATE: 2011/09/22::
34
Douglas XB-42 Mixmaster Experimental Aircraft
Douglas XB-42 Mixmaster Experimental Aircraft
DATE: 2012/04/28::
35
Fabio XB & Wach vs Roman Sokolovsky - Eternal (Andrew Rayel Remix) [Armada]
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DATE: 2012/04/15::
36
Douglas XB-42 Mixmaster
Douglas XB-42 Mixmaster
DATE: 2009/05/03::
37
Above and Beyond - Trance Around The World 437 (Paul Thomas guest mix) - 10.08.2012
Above and Beyond - Trance Around The World 437 (Paul Thomas guest mix) - 10.08.2012
DATE: 2012/11/18::
38
A State of Trance 2009 Yearmix
A State of Trance 2009 Yearmix
DATE: 2013/06/30::
39
BIGGEST BOMBER XB-19
BIGGEST BOMBER XB-19
DATE: 2013/05/18::
40
Martin B-57 Canberra Documentary (Part 1)
Martin B-57 Canberra Documentary (Part 1)
DATE: 2009/06/18::
41
trip with gordon tindall
trip with gordon tindall
DATE: 2008/01/21::
42
B-45 Tornado takeoff
B-45 Tornado takeoff
DATE: 2007/03/29::
43
Martin Mauler And Douglas Skyraider Introduced
Martin Mauler And Douglas Skyraider Introduced
DATE: 2011/07/16::
44
Fabio XB & Wach vs Roman Sokolovsky - Eternal (Original Mix)
Fabio XB & Wach vs Roman Sokolovsky - Eternal (Original Mix)
DATE: 2012/09/04::
45
KSP XB-42 Mixmaster, prototype plane, Firespitter & B9 aerospace
KSP XB-42 Mixmaster, prototype plane, Firespitter & B9 aerospace
DATE: 2014/04/28::
46
Inside The B-19 (1941)
Inside The B-19 (1941)
DATE: 2012/04/21::
47
Convair YB-60 Bomber Introduced (1952)
Convair YB-60 Bomber Introduced (1952)
DATE: 2010/04/30::
48
Martin B-57 Canberra Documentary (Part 3)
Martin B-57 Canberra Documentary (Part 3)
DATE: 2009/06/18::
49
Martin B-10 Bomber at Air Force Museum
Martin B-10 Bomber at Air Force Museum
DATE: 2014/01/18::
50
Martin P5M Marlin
Martin P5M Marlin
DATE: 2009/03/27::
NEXT >>
RESULTS [51 .. 101]
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XB-48
MartinXB48.jpg
Role Bomber
Manufacturer Glenn L. Martin Company
First flight 22 June 1947
Status Cancelled in 1948
Number built 2
Unit cost
US$11.5 million for the program[1]
Martin XB-48 prototype taxiing, showing spaces between engines for cooling, tandem main gear, & nacelle outriggers.

The Martin XB-48 was a medium jet bomber developed in the mid-1940s. It competed with the Boeing B-47 Stratojet, a clearly superior design, and was seen largely as a backup plan in case the B-47 ran into development problems. It never saw production or active duty, and only two prototypes, serial numbers 45-59585 and 45-59586,[2] were built.

Design and development[edit]

In 1944, the U.S. War Department was aware of aviation advances in Germany and issued a requirement for a range of designs for medium bombers weighing from 80,000 lb (36,287 kg) to more than 200,000 lb (90,718 kg). Other designs resulting from this competition, sometimes named the class of ‍ '​45, included the North American XB-45 and the Convair XB-46. Production orders finally went to the North American B-45 Tornado, and even this airplane only served for a couple of years before again being replaced by the much more modern Boeing B-47 Stratojet although the B-45 had enough "utility" built in to maintain a niche as reconnaissance aircraft.

In retrospect, the class of '45 were transitional aircraft combining the power of turbojets with the aeronautical knowledge of World War II. The XB-48 was no exception, as its round fuselage and unswept wings show a distinct influence of Martin's B-26 Marauder medium bomber. Still, where the B-26 had enough thrust with two massive 18-cylinder radial engines, the XB-48 needed no less than six of the new jet engines.

Although the pictures make it look like the aircraft has three engine gondolas under each wing, the jet engines were actually clustered in a pair of flat three-engined gondolas with an intricate system of air canals between the engines providing cooling. At the time of the XB-48's design, jet propulsion was clearly still in its infancy.

The XB-48 was the first aircraft designed with bicycle type landing gear, which had previously been tested on a modified B-26. The wing airfoil was too thin to house conventional landing gear mechanisms.[3] The main landing gear was in the fuselage and small outriggers located on each wing were used to balance the aircraft.

Operational history[edit]

The XB-48 made its first flight on 22 June 1947, a 37-minute, 73 mi (117 km) hop from Martin's Baltimore, Maryland plant to NAS Patuxent River, Maryland, but blew all four tires on its fore-and-aft mounted undercarriage on landing when pilot Pat Tibbs applied heavy pressure to the specially-designed, but very slow to respond, insensitive air-braking lever. Tibbs and co-pilot Dutch Gelvin were uninjured.[4]

Video[edit]

Specifications (XB-48)[edit]

Data from "Encyclopedia of US Air Force Aircraft and Missile Systems, Volume II"[5]

General characteristics

  • Crew: 3 (pilot, co-pilot, and bomber-navigator)
  • Length: 85 ft 9 in (26 m)
  • Wingspan: 108 ft 4 in (33 m)
  • Height: 26 ft 6 in (8 m)
  • Wing area: 1,330 ft² (123.5 m²)
  • Empty weight: 58,500 lb (26,535 kg)
  • Loaded weight: 92,600 lb (42,000 kg)
  • Max. takeoff weight: 102,600 lb (46,540 kg)
  • Powerplant: 6 × General Electric J35 axial flow gas-turbine, 3,820 lbf (17 kN) each

Performance

Armament

  • Guns: 2 × .50 in (12.7 mm) M7 machine guns in tail turret (proposed)[3]
  • Bombs: 1 × 20,000 lb (9,980 kg) or 36 × 250 lb (113 kg)

See also[edit]

Aircraft of comparable role, configuration and era
Related lists

References[edit]

Notes
  1. ^ Knaack 1988
  2. ^ "Fact Sheet: Martin XB-48." National Museum of the United States Air Force. Retrieved: 5 July 2010.
  3. ^ a b Jones 1969
  4. ^ Mizrahi 1999, pp. 50–52.
  5. ^ Knaack, Marcelle Size. Encyclopedia of U.S. Air Force Aircraft and Missile Systems: Volume II: Post-World War II Bombers, 1945–1973. Washington, DC: Office of Air Force History, 1988. ISBN 0-16-002260-6.
Bibliography
  • Jones, Lloyd S. U.S. Bombers, B-1 1928 to B-1 1980s. Fallbrook, CA: Aero Publishers, 1962, second edition 1974. ISBN 0-8168-9126-5.
  • Mizrahi, Joe. "The Last Great Bomber Fly Off". Wings, Volume 29, Number 3, June 1999.

External links[edit]

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