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Lockheed Martin LMXT (KC-Y Bridge Tanker)


Aerial Refueling Tanker Aircraft Proposal (2030)


Aviation / Aerospace

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Image from official LMXT program press release.

Jump-to: Specifications

The LMXT is the Lockheed Martin submission into the KC-Y Bridge Tanker field being sponsored by a United States Air Force requirement.



Authored By: Staff Writer | Last Edited: 09/22/2021 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.
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The LMXT is Lockheed Martin's attempt to secure the standing KC-Y "Bridge Tanker" requirement of the United States Air Force (USAF). The platform is built atop the proven framework of the French Airbus A330 passenger airliner - the A330 Multi-Role Tanker Transport (MRTT) derivative to be exact - which has proven itself a capable player operationally in the aerial-refueling realm through various European /Western air powers including Australia, France, Germany, and the United Kingdom. The competition seeks a "bridge" product between an aging USAF refueling fleet and the in-delivery Boeing KC-46A "Pegasus" tanker product (based in the Boeing Model 767 airliner).

Deliveries of the winning product are expected sometime after 2029 by the service. The LMXT is billed as a strategic-level solution utilizing all-modern and advanced technologies to see the role through. Key components of the Lockheed proposal include the Joint All-Domain Command and Control (JADC2) open-system architecture, increased operating ranges, increase fuel payload, and a digitally-controlled Fly-by-Wire (FbW) / Automatic, Air-to-Air Refueling (A3R) boom offering advanced camera and vision sensors. An enhanced defensive countermeasures system will be carried by the aircraft for heightened survivability in contested airspaces/warzones. The airframe will also feature networked communications between all battlefield assets - from satellites and warships to allied fighters and bombers.

The use of the popular French A330, coupled with the proposed Lockheed Martin add-ons, hopes to ensure speedy development of the needed aircraft.

The LMXT will be capable of refueling all, if not most, of the USAF's current in-service aircraft including F-22 and F-15 air superiority fighters, F-35A strike fighters, F-16 lightweight fighters, B-1 strategic bombers, C-17 heavy airlifters, and E-3/E-7/P-8 special-mission platforms.

Using the Airbus A330 as its foundation, the aircraft will continue much of the airliners form and function; a pair of underslung, non-afterburning turbofan engines are set under each swept-back wing mainplane (capped by fuel-saving winglets). The flight deck resides in its traditional place over the nose and the tail unit encompasses a large-area vertical fin with low-set, upwards-cranked horizontal planes. As in the commercial A330 series, a retractable tricycle undercarriage will provide ground-running support.

Specifications as currently estimated (2021) of the LMXT include a length of 193 feet, a wingspan of 198 feet, and Maximum Take-Off Weight (MTOW) of 533,500lb. The complete fuel load will weight 271,700lb. Cruising will be around the Mach 0.81 range and the mission endurance window is set to reach 19.5 hours, offering nearly round-the-clock support for ongoing operations.

Specifications



Service Year
2030

Origin
United States national flag graphic
United States

Status
IN-DEVELOPMENT
Program in Progress.
Crew
3

Production
0
UNITS


Lockheed Martin - USA; Airbus - France
National flag of the United States United States (possible)
(OPERATORS list includes past, present, and future operators when applicable)
Aerial Refueling (Tanker)
Dedicated or converted airframe used to deliver fuel to awaiting allied aircraft.
X-Plane (Developmental, Prototype, Technology Demonstrator)
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.


RADAR-CAPABLE
Houses, or can house (through specialized variants), radar equipment for searching, tracking, and engagement of enemy elements.
COUNTERMEASURES
Survivability enhanced by way of onboard electronic or physical countermeasures enacted by the aircraft or pilot/crew.
MULTI-ENGINE
Incorporates two or more engines, enhancing survivability and / or performance.
WING SWEEPBACK
Mainplanes, or leading edges, features swept-back lines for enhanced high-speed performance and handling.
WINGLETS
Mainplanes capped with winglets, providing improved fuel efficiency and enhanced handling.
HIGH-SPEED PERFORMANCE
Can accelerate to higher speeds than average aircraft of its time.
HIGH-ALTITUDE PERFORMANCE
Can reach and operate at higher altitudes than average aircraft of its time.
EXTENDED RANGE PERFORMANCE
Capability to travel considerable distances through onboard fuel stores.
SUPER PERFORMANCE
Design covers the three all-important performance categories of speed, altitude, and range.
MARITIME OPERATION
Ability to operate over ocean in addition to surviving the special rigors of the maritime environment.
CREWSPACE PRESSURIZATION
Supports pressurization required at higher operating altitudes for crew survival.
CREW-MANAGED
Beyond a pilot, the aircraft takes advantage of additional crew specialized in specific functions aboard the aircraft.
ENCLOSED CREWSPACE(S)
Features partially- or wholly-enclosed crew workspaces.
RETRACTABLE UNDERCARRIAGE
Features retracting / retractable undercarriage to preserve aerodynamic efficiency.


Length
193.0 ft
(58.83 m)
Width/Span
198.0 ft
(60.35 m)
Height
57.1 ft
(17.40 m)
Empty Wgt
275,578 lb
(125,000 kg)
MTOW
533,519 lb
(242,000 kg)
Wgt Diff
+257,941 lb
(+117,000 kg)
(Showcased structural values pertain to the Lockheed LMXT production variant)
monoplane / low-mounted / swept-back
Monoplane
Design utilizes a single primary wing mainplane; this represent the most popular mainplane arrangement.
Low-Mounted
Mainplanes are low-mounted along the sides of the fuselage.
Swept-Back
The planform features wing sweep back along the leading edges of the mainplane, promoting higher operating speeds.
(Structural descriptors pertains to the Lockheed LMXT production variant)
Installed: 2 x Rolls-Royce Trent 722B OR General Electric CF6-80E1A4 OR Pratt & Whitney PW4170 non-afterburning turbofan engines developing up to 72,000lb of thrust each unit.
Max Speed
547 mph
(880 kph | 475 kts)
Cruise Speed
534 mph
(860 kph | 464 kts)
Max. Speed Diff
+12 mph
(+20 kph | 11 kts)
Ceiling
140,092 ft
(42,700 m | 27 mi)
Range
9,196 mi
(14,800 km | 27,410 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 Lockheed LMXT production variant. Compare this aircraft entry against any other in our database. View aircraft by powerplant type)
None. Onboard systems carried for defensive countermeasures only.


LMXT - Base Program Series Name.


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