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Boeing X-48


Experimental Blended Wing Body (BWB) Drone [ 2007 ]



The Boeing X-48 Unmanned Aerial Vehicle is intended as a data-collecting platform for research into blended wing body UAV design.



Authored By: Staff Writer | Last Edited: 05/21/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

GO TO SPECIFICATIONS [+]
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The Blended Wing Body (BWB) concept in aircraft involves just that - fixed wing elements contoured finely with the fuselage, this producing a "flying wing" of sorts as there is no defined break between the body and the wing mainplanes and the aircraft lacks a true tail unit. The concept features many of the benefits of a flying wing in that greater internal space means larger fuel stores and more surface area helps to create inherent lift. Collectively, these qualities increase operational range and fuel efficiency compared to more traditionally arranged aircraft. However, as with any other design venture, BWB aircraft hold technological challenges all their own which leads prominent defense contractors to pursue the merits of such aircraft through developmental platforms like the Boeing "X-48B".

BWB aircraft have been on the minds of aeronautical engineers since the early 1920s as the world recovered from The Great War, a war which saw the aircraft become a viable military component in monoplane, biplane, and triplane forms. From there, the concept evolved through great thinkers in the field and as technology allowed - straight wings gave way to swept wings and flush, all-metal skinning became the norm. In the new century, Boeing's "Phantom Works", its special projects division, began looking into furthering what was already known about BWBs and this begat the X-48.

Earlier work was completed by McDonnell Douglas and this was absorbed into Boeing records after the merger of the two powerhouses in 1997. Boeing then teamed up with engineers at NASA Langley Research Center to develop what would become the X-48. A prop-driven, remotely-controlled scale model of a BWB aircraft was flown in 1997 to prove the concept sound. However, the X-48A initiative, to include a wingspan of 35 feet, fell to naught - the product was cancelled before any physical work had taken place.

Next came the X-48B and this featured a more modest span of 20.4 feet. Dimensionally smaller than the intended A-model, the B-model was given large-area mainplanes with sweep along the leading edges. Its surface area was such that it negated use of a true tail unit. Vertical planes were instead seated at the mainplane wingtips. A mock cockpit was painted into the nose of the fuselage and three engine nacelles were affixed along the extreme aft of the aircraft's body, these housing JetCat P200 turbojets of 52 pounds thrust each. A full tricycle undercarriage was installed and the finalized design's gross weight reached about 500 pounds. Composites were used through where possible and Cranfield Aerospace of Britain was charged with its construction.©MilitaryFactory.com
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The X-48B began its testing phase in 2007 and recorded a first flight on July 20th. Cranfield Aerospace was commissioned for two demonstrators which were delivered ("Ship 1" and "Ship 2"). The X-48B was able to achieve a maximum speed of 136 miles per hour, an endurance window of 40 minutes and a service ceiling up to 10,000 feet. Since it became airborne, the X-48B has become a crucial component to Boeing Phantom Works regarding its research into BWBs.

The future prospects of the X-48B are interesting - it is intended as a scale-model version of a full-sized aircraft still to come. BWB designs could serve both military and civilian markets well if certain technical aspects can be solved and - perhaps more importantly - these two services are not averse to something completely different that traditionally-arranged aircraft. The inherent benefits of BWB aircraft are intriguing to say the least but it may take much convincing to pull off serial production commitments from entities such as the United States Air Force and major global passenger carriers. It is seen that such aircraft could effectively fulfill the role of heavy-lift transport in military service and long-haul airliner in civilian service.

Since the X-48B entered its test phase, yet another in the series was introduced - the X-48C. This entry became a modification of the X-48B before it but had been given a two-engine arrangement and was intended to test low-noise capability - a good quality for a civilian passenger hauler to be sure. The X-48C had its first flight in August of 2012 and wrapped up its test phase in April of the following year.

There are noted plans by Boeing for a dimensionally larger aircraft in the series still to come to continue research into their BWB design.©MilitaryFactory.com
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.
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Specifications



Service Year
2007

Origin
United States national flag graphic
United States

Status
ACTIVE
In Active Service.
Crew
0
UNMANNED
Production
2
UNITS


National flag of the United States United States
(OPERATORS list includes past, present, and future operators when applicable)
X-Plane (Developmental, Prototype, Technology Demonstrator)
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.
Unmanned Capability
Aircraft inherently designed (or later developed) with an unmanned capability to cover a variety of over-battlefield roles.


Length
15.1 ft
(4.60 m)
Width/Span
20.4 ft
(6.22 m)
Height
3.0 ft
(0.90 m)
Empty Wgt
430 lb
(195 kg)
MTOW
496 lb
(225 kg)
Wgt Diff
+66 lb
(+30 kg)
(Showcased structural values pertain to the Boeing X-48B production variant)
Installed: 3 x JetCat P200 turbojet engines developing 52 lb of thrust each.
Max Speed
137 mph
(220 kph | 119 kts)
Ceiling
10,007 ft
(3,050 m | 2 mi)
Range
90 mi
(145 km | 269 nm)


♦ 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


(Showcased performance specifications pertain to the Boeing X-48B 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)
None.


Supported Types




(Not all ordnance types may be represented in the showcase above)
X-48 - Base Series Designation
X-48A - Originally planned flyable demonstrator; none built.
X-48B - Three-engined demonstrator; two completed as Ship 1 and Ship 2.
X-48C - Modified X-48B; twin-engined demonstrator; first flight in August 2012.


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Images Gallery



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Image of the Boeing X-48
Image from the NASA image archives; Tony Landis.
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Image of the Boeing X-48
Image from the Public Domain; note twin engine arrangement of the X-48C.
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Image of the Boeing X-48
Image from the NASA image archives.
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Image of the Boeing X-48
Image from the NASA image archives.
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Image of the Boeing X-48
Image from the NASA image archives.
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Image of the Boeing X-48
Image from the NASA image archives.
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Image of the Boeing X-48
Image from the NASA image archives.
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Image of the Boeing X-48
Image from the NASA image archives.
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Image of the Boeing X-48
Image from the NASA image archives.
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Image of the Boeing X-48
Image from the NASA image archives.
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Image of the Boeing X-48
Image from the NASA image archives.
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Image of the Boeing X-48
Image from the NASA image archives.
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Image of the Boeing X-48
Image from the NASA image archives.
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Image of the Boeing X-48
Image from the NASA image archives.
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Image of the Boeing X-48
Image from the NASA image archives.


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