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."

Image from official Lockheed Martin marketing material.

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.

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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.

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.
Propulsion

69 mph
111 kph | 60 kts
Max Speed

1,616 miles
2,600 km | 1,404 nm
Operational Range

Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Lockheed Martin LMH-1 Cargo Hybrid Airship Prototype.

3
(MANNED)
Crew

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

Armament
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.

Variants
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.

Operators
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

[ United States (probable) ]

1 / 1

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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