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Lockheed Martin LMH-1 (P-791)

Cargo Hybrid Airship Prototype

United States | 2019

"The LMH-1 was a Lockheed Martin hybrid airship development intended to satisfy a U.S. Army requirement - it did not succeed."

Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Lockheed Martin LMH-1 Cargo Hybrid Airship Prototype.
4 x V6 diesel-fueled engines developing 300 horsepower driving three-bladed propeller units.
69 mph
111 kph | 60 kts
Max Speed
1,616 miles
2,600 km | 1,404 nm
Operational Range
The nose-to-tail, wingtip-to-wingtip physical qualities of the Lockheed Martin LMH-1 Cargo Hybrid Airship Prototype.
280.0 ft
85.35 m
O/A Length
148.0 ft
(45.11 m)
O/A Width
78.0 ft
(23.77 m)
O/A Height
Available supported armament and special-mission equipment featured in the design of the Lockheed Martin LMH-1 (P-791) Cargo Hybrid Airship Prototype .
None. Up to 47,000lb of cargo payload or nineteen passengers.
Notable series variants as part of the Lockheed Martin LMH-1 (P-791) family line.
LMH-1 - Base Series Designation.
P-791 - Proof-of-Concept Demonstrator.
Authored By: Staff Writer | Last Edited: 05/03/2022 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

The Lockheed Martin LMH-1 / P-791 was a hybrid airship developed by the company to satisfy the United States Army's "Long-Endurance, Multi-Engine Vehicle" (LEMV) program. The design utilized a combination of aerodynamic and aerostatic lift principles but was passed on in favor of the competing Northrop Grumman HAV-3 (Hybrid Air Vehicles). Lockheed continued hybrid airship development in the subsequent "LMZ1M".

The LMH-1 was powered by four V6 diesel-fueled engine units each developing 300 horsepower and driving three-bladed propeller units. The aircraft itself had a futuristic design with its rounded, streamlined shape and cut-off bottom. Tailfins were arranged at the rear in an "X" pattern.

Some attempts were made to bring the airship to the commercial market as a cargo carrier including a deal with Straightline Aviation and Hybrid Enterprises (LMH-1) but these initiatives appear to have fallen to naught.

The P-791 was used to designated a proof-of-concept demonstrator.

Content ©MilitaryFactory.com; No Reproduction Permitted.

March 2016 - Straightline Aviation (SLA) has committed to becoming the launch customer for the Lockheed LMH-1 series airship. Seven of the aircraft will initially form the fleet and these are set to serve the minerals industry. Introduction is tentatively scheduled for sometime in 2019.

Global customers who have evaluated and/or operated the Lockheed Martin LMH-1 (P-791). Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 1 Units

Contractor(s): Lockheed Martin - USA
National flag of the United States

[ United States (probable) ]
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Image of the Lockheed Martin LMH-1 (P-791)
Image from official Lockheed Martin marketing material.

Going Further...
The Lockheed Martin LMH-1 (P-791) Cargo Hybrid Airship Prototype appears in the following collections:
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