Category Archives: Military technology

Modern Airships

August 26, 2016Aeronautical, All Posts, Aviation, Commercial aviation, Military technology, TransportationDrummer

This August 2016 post, which included links to 14 articles on specific historic and modern airships, was replaced in August 2019.

“Modern Airships” now is a three-part post that contains an overview of modern airship technology in Part 1 and links in Parts 1, 2 and 3 to more than 275 individual articles on historic and advanced airship designs. Here are the links to all three parts:

Modern Airships – Part 1: https://lynceans.org/all-posts/modern-airships-part-1/
Modern Airships – Part 2: https://lynceans.org/all-posts/modern-airships-part-2/
Modern Airships – Part 3: https://lynceans.org/all-posts/modern-airships-part-3/

I hope you’ll find the expanded Modern Airships series of posts to be informative, useful, and different from any other single source of information on this subject.

Best regards,

Peter Lobner

August 2019

Bio-fuel at Less Than Half the Price

July 27, 2016Aeronautical, All Posts, Military technology, Power Generating Technology - Alternatebio-fuel, biofuel, Department of Defense, Department of Energy, DoD, DOE, Fischer-Tropsch process, Great Green Fleet, HRJ, Hydrotreated Renewable Jet, IATA, International Air Transport Association, JBEI, Joint BioEnergy InstituteDrummer

Peter Lobner

1. New process for manufacturing bio-fuel

The Joint BioEnergy Institute (JBEI) is a Department of Energy (DOE) bioenergy research center dedicated to developing advanced bio-fuels, which are liquid fuels derived from the solar energy stored in plant biomass. Such fuels currently are replacing gasoline, diesel and jet fuels in selected applications.

On 1 July 2016, a team of Lawrence Berkeley National Laboratory (LBNL) and Sandia National Laboratories (SNL) scientists working at JBEI published a paper entitled, “CO₂ enabled process integration for the production of cellulosic ethanol using bionic liquids.” The new process reported in this paper greatly simplifies the industrial manufacturing of bio-fuel and significantly reduces waste stream volume and toxicity as well as manufacturing cost.

The abstract provides further information:

“There is a clear and unmet need for a robust and affordable biomass conversion technology that can process a wide range of biomass feedstocks and produce high yields of fermentable sugars and bio-fuels with minimal intervention between unit operations. The lower microbial toxicity of recently developed renewable ionic liquids (ILs), or bionic liquids (BILs), helps overcome the challenges associated with the integration of pretreatment with enzymatic saccharification and microbial fermentation. However, the most effective BILs known to date for biomass pretreatment form extremely basic pH solutions in the presence of water, and therefore require neutralization before the pH range is acceptable for the enzymes and microbes used to complete the biomass conversion process. Neutralization using acids creates unwanted secondary effects that are problematic for efficient and cost-effective biorefinery operations using either continuous or batch modes.

We demonstrate a novel approach that addresses these challenges through the use of gaseous carbon dioxide to reversibly control the pH mismatch. This approach enables the realization of an integrated biomass conversion process (i.e., “single pot”) that eliminates the need for intermediate washing and/or separation steps. A preliminary technoeconomic analysis indicates that this integrated approach could reduce production costs by 50–65% compared to previous IL biomass conversion methods studied.”

Regarding the above abstract, here are a couple of useful definitions:

Ionic liquids: powerful solvents composed entirely of paired ions that can be used to dissolve cellulosic biomass into sugars for fermentation.
Enzymatic saccharification: breaking complex carbohydrates such as starch or cellulose into their monosaccharide (carbohydrate) components, which are the simplest carbohydrates, also known as single sugars.

The paper was published on-line in the journal, Energy and Environmental Sciences, which you can access via the following link:

http://pubs.rsc.org/en/content/articlelanding/2016/ee/c6ee00913a#!divAbstract

Let’s hope they’re right about the significant cost reduction for bio-fuel production.

2. Operational use of bio-fuel

One factor limiting the wide-scale use of bio-fuel is its higher price relative to the conventional fossil fuels it is intended to replace. The prospect for significantly lower bio-fuel prices comes at a time when operational use of bio-fuel is expanding, particularly in commercial airlines and in the U.S. Department of Defense (DoD). These bio-fuel users want advanced bio-fuels that are “drop-in” replacements to traditional gasoline, diesel, or jet fuel. This means that the advanced bio-fuels need to be compatible with the existing fuel distribution and storage infrastructure and run satisfactorily in the intended facilities and vehicles without introducing significant operational or maintenance / repair / overhaul (MRO) constraints.

You will find a fact sheet on the DoD bio-fuel program at the following link:

http://www.americansecurityproject.org/dods-biofuels-program/

The “drop in” concept can be difficult to achieve because a bio-fuel may have different energy content and properties than the petroleum fuel it is intended to replace. You can find a Department of Energy (DOE) fuel properties comparison chart at the following link:

http://www.afdc.energy.gov/fuels/fuel_comparison_chart.pdf

Another increasingly important factor affecting the deployment of bio-fuels is that the “water footprint” involved in growing the biomass needed for bio-fuel production and then producing the bio-fuel is considerably greater than the water footprint for conventional hydrocarbon fuel extraction and production.

A. Commercial airline use of bio-fuel:

Commercial airlines became increasingly interested in alternative fuels after worldwide oil prices peaked near $140 in 2008 and remained high until 2014.

A 2009 Rand Corporation technical report, “Near-term Feasibility of Alternative Jet Fuels,” provides a good overview of issues and timescales associated with employment of bio-fuels in the commercial aviation industry. Important findings included:

Drop-in” fuels have considerable advantages over other alternatives as practical replacements for petroleum-based aviation fuel.
Alcohols do not offer direct benefits to aviation, primarily because high vapor pressure poses problems for high-altitude flight and safe fuel handling. In addition, the reduced energy density of alcohols relative to petroleum-based aviation fuel would substantially reduced aircraft operating capabilities and would be less energy efficient.
Biodiesel and biokerosene, collectively known as FAMEs, are not appropriate for use in aviation, primarily because they leave deposits at the high temperatures found in aircraft engines, freeze at higher temperatures than petroleum-based fuel, and break down during storage

You can download this Rand report at the following link

http://www.rand.org/content/dam/rand/pubs/technical_reports/2009/RAND_TR554.pdf

After almost two years of collaboration with member airlines and strategic partners, the International Air Transport Association (IATA) published the report, “IATA Guidance Material for Biojet Fuel Management,” in November 2012. A key finding in this document is the following:

“To be acceptable to Civil Aviation Authorities, aviation turbine fuel must meet strict chemical and physical criteria. There exist several specifications that authorities refer to when describing acceptable conventional jet fuel such as ASTM D1655 and Def Stan 91-91. At the time of issue, blends of up to 50% biojet fuel produced through either the Fischer-Tropsch (FT) process or the hydroprocessing of oils and fats (HEFA – hydroprocessed esters and fatty acids) are acceptable for use under these specifications, but must first be certified under ASTM D7566. Once the blend has demonstrated compliance with the relevant product specifications, it may be regarded as equivalent to conventional jet fuel in most applications.“

You can download this IATA document at the following link:

https://www.iata.org/publications/Documents/guidance-biojet-management.pdf

In 2011, KLM flew the world’s first commercial bio-fuel flight, carrying passengers from Amsterdam to Paris. Also in 2011, Aeromexico flew the world’s first bio-fuel trans-Atlantic revenue passenger flight, from Mexico City to Madrid.

In March 2015, United Airlines (UA) inaugurated use of bio-fuel on flights between Los Angeles (LAX) and San Francisco (SFO). Eventually, UA plans to expand the use of bio-fuel to all flights operating from LAX. UA is the first U.S. airline to use renewable fuel for regular commercial operation.

Many other airlines worldwide are in various stages of bio-fuel testing and operational use.

B. U.S. Navy use of bio-fuel:

The Navy is deploying bio-fuel in shore facilities, aircraft, and surface ships. Navy Secretary Ray Mabus has established a goal to replace half of the Navy’s conventional fuel supply with renewables by 2020.

In 2012, the Navy experimented with a 50:50 blend of traditional petroleum-based fuel and biofuel made from waste cooking oil and algae oil. This blend was used successfully on about 40 U.S. surface ships that participated in the Rim of the Pacific (RIMPAC) exercise with ships of other nations. The cost of pure bio-fuel fuel for this demonstration was about $26.00 per gallon, compared to about $3.50 per gallon for conventional fuel at that time.

In 2016, the Navy established the “Great Green Fleet” (GGF) as a year-long initiative to demonstrate the Navy’s ability to transform its energy use.

Source: U.S. Navy

The Navy described this initiative as follows:

“The centerpiece of the Great Green Fleet is a Carrier Strike Group (CSG) that deploys on alternative fuels, including nuclear power for the carrier and a blend of advanced bio-fuel made from beef fat and traditional petroleum for its escort ships. These bio-fuels have been procured by DON (Department of Navy) at prices that are on par with conventional fuels, as required by law, and are certified as “drop-in” replacements that require no engine modifications or changes to operational procedures.”

Deployment of the Great Green Fleet started in January 2016 with the deployment of Strike Group 3 and its flagship, the nuclear-powered aircraft carrier USS John C. Stennis. The conventionally-powered ships in the Strike Group are using a blend of 10% bio-fuel and 90% petroleum. The Navy originally aimed for a 50:50 ratio, but the cost was too high. The Navy purchased about 78 million gallons of blended bio-fuel for the Great Green Fleet at a price of $2.05 per gallon.

C. U.S. Air Force use of bio-fuel:

The USAF has a goal of meeting half its domestic fuel needs with alternative sources by 2016, including aviation fuel.

The Air Force has been testing different blends of jet fuel and biofuels known generically as Hydrotreated Renewable Jet (HRJ). This class of fuel uses triglycerides and free fatty acids from plant oils and animal fats as the feedstock that is processed to create a hydrocarbon aviation fuel.

To meet its energy plan, the USAF plans to use a blend that combines military-grade fuel known as JP-8 with up to 50 percent HRJ. The Air Force also has certified a 50:50 blend of Fisher-Tropsch synthetic kerosene and conventional JP-8 jet fuel across its fleet.

The Air Force Civil Engineer Support Agency (AFCESA), headquartered at Tyndall Air Force Base, Florida is responsible for certifying the USAF aviation fuel infrastructure to ensure its readiness to deploy blended JP-8/bio-fuel.

Wave Glider Autonomous Vehicle Harvests Wave and Solar Power to Deliver Unique Operational Capabilities at Sea

May 18, 2016All Posts, Automation & autonomous systems, Marine Technology, Military technologyLiquid Robotics, unmanned surface vehicle, USV, wave energy harvesting, Wave GliderDrummer

Peter Lobner

The U.S. firm Liquid Robotics, Inc., in Sunnyvale, CA, designs, manufactures, and sells small unmanned surface vehicles (USVs) called Wave Gliders, which consist of two parts: an underwater “glider” that provides propulsion and a surface payload vehicle that houses electronics and a solar-electric power system. The physical arrangement of a Wave Glider is shown in the following diagrams. The payload vehicle is about 10 feet (305 cm) long. The glider is about 7 feet (213 cm) long and is suspended about 26 feet (800 cm) below the payload vehicle.

Source: Liquid Robotics. Note: 800 cm suspension distance is not to scale.

The payload vehicle is topped with solar panels and one or more instrumentation / communication / navigation masts. The interior modular arrangement of a Wave Glider is shown in the following diagram. Wave Glider is intended to be an open, extensible platform that can be readily configured for a wide range of missions.

Source: Liquid Robotics

The Wave Glider is propelled by wave power using the operational principle for wave power harvesting shown in the following diagram. Propulsion power is generated regardless of the heading of the Wave Glider relative to the direction of the waves, enabling sustained vehicle speeds of 1 to 3 knots.

Source: Liquid Robotics

The newer SV3 Wave Glider has a more capable electric power system than its predecessor, the SV2, enabling the SV3 glider to be equipped with an electric motor-driven propeller for supplementary solar-electric propulsion. SV3 also is capable of towing and supplying power to submerged instrument packages.

Autonomous navigation and real-time communications capabilities enable Wave Gliders to be managed individually or in fleets. The autonomous navigation capability includes programmable course navigation, including precise hold-station capabilities, and surface vessel detection and avoidance.

Originally designed to monitor whales, the Wave Glider has matured into a flexible, multi-mission platform for ocean environmental monitoring, maritime domain awareness / surveillance, oil and gas exploration / operations, and defense.

More information and short videos on the operation of the Wave Glider are available on the Liquid Robotics website at the following link:

http://www.liquid-robotics.com/platform/overview/

On 28 April 2016, the U.S. Navy announced that it was in the process of awarding Liquid Robotics a sole-source contract for Wave Glider USV hardware and related services. You can read the Notice of Intent at the following link:

https://www.fbo.gov/index?s=opportunity&mode=form&id=6abb899b3e3286bfcd861fc5dedfdb65&tab=core&_cview=0

As described by the Navy:

“The required USV is a hybrid sea-surface USV comprised of a submerged ‘glider’ that is attached via a tether to a surface float. The vehicle is propelled by the conversion of ocean wave energy into forward thrust, independent of wave direction. No electrical power is generated by the propulsion mechanism.”

Navy requirements for the Wave Glider USV include the following:

Mission: Capable of unsupported autonomous missions of up to ten months duration, with long distance transits of up to 1,000 nautical miles in the open ocean
Propulsion: Wave power harvesting at all vehicle-to-wave headings, with sustained thrust adequate under own propulsion sufficient to tow significant loads
Electric Power: Solar energy harvesting during daylight hours, with power generation / storage capabilities sufficient to deliver ten watts to instrumentation 24/7
Instrumentation: Payload of 20 pounds (9.1 kg)
Navigation: Commandable vehicle heading and autonomous on-board navigation to a given and reprogrammable latitude/longitude waypoint on the ocean’s surface
Survivability: Sea states up to a rating of five and winds to 50 knots
Stealth: Minimal radar return, low likelihood of visual detectability, minimal radiated acoustic noise

In my 11 April 2016 post, I discussed how large autonomous surface and underwater vehicles will revolutionize the ways in which the U.S. Navy conducts certain operational missions. Wave Glider is at the opposite end of the autonomous vehicle size range, but retains the capability to conduct long-duration, long-distance missions. It will be interesting to see how the Navy employs this novel autonomous vehicle technology.

Large Autonomous Vessels will Revolutionize the U.S. Navy

April 11, 2016All Posts, Automation & autonomous systems, Marine Technology, Military technology, National Security, Naval ships & systemsACTUV, anti-submarine warfare, autonomous vessel, Boeing, continuous trail, DARPA, DoD, Echo Ranger, Echo Seeker, Echo Voyager, Leidos, Phantom Works, Raytheon Modular Scalable Sonar System, Sea Hunter, Third Offset Strategy, U.S. Navy, UUVDrummer

Peter Lobner

In this post, I will describe two large autonomous vessels that are likely to revolutionize the way the U.S. Navy operates. The first is the Sea Hunter, originally sponsored by Defense Advanced Projects Agency (DARPA), and the second is Echo Voyager developed by Boeing.

DARPA Anti-submarine warfare (ASW) Continuous Trail Unmanned Vessel (ACTUV)

Source: DARPA

DARPA explains that the program is structured around three primary goals:

Demonstrate the performance potential of a surface platform conceived originally as an unmanned vessel.
- This new design paradigm reduces constraints on conventional naval architecture elements such as layout, accessibility, crew support systems, and reserve buoyancy.
- The objective is to produce a vessel design that exceeds state-of-the art manned vessel performance for the specified mission at a fraction of the vessel size and cost.
Advance the technology for unmanned maritime system autonomous operation.
- Enable independently deploying vessels to conduct missions spanning thousands of kilometers of range and months of duration under a sparse remote supervisory control model.
- This includes autonomous compliance with maritime laws and conventions for safe navigation, autonomous system management for operational reliability, and autonomous interactions with an intelligent adversary.
Demonstrate the capability of an ACTUV vessel to use its unique sensor suite to achieve robust, continuous track of the quietest submarine targets over their entire operating envelope.

While DARPA states that ACTUV vessel is intended to detect and trail quiet diesel electric submarines, including air-independent submarines, that are rapidly proliferating among the world’s navies, that detect and track capability also should be effective against quiet nuclear submarines. The ACTUV vessel also will have capabilities to conduct counter-mine missions.

The ACTUV program is consistent with the Department of Defense (DoD) “Third Offset Strategy,” which is intended to maintain U.S. military technical supremacy over the next 20 years in the face of increasing challenges from Russia and China. An “offset strategy” identifies particular technical breakthroughs that can give the U.S. an edge over potential adversaries. In the “Third Offset Strategy”, the priority technologies include:

Robotics and autonomous systems: capable of assessing situations and making decisions on their own, without constant human monitoring
Miniaturization: enabled by taking the human being out of the weapons system
Big data: data fusion, with advanced, automated filtering / processing before human involvement is required.
Advanced manufacturing: including composite materials and additive manufacturing (3-D printing) to enable faster design / build processes and to reduce traditionally long supply chains.

You can read more about the “Third Offset Strategy” at the following link:

http://breakingdefense.com/2014/11/hagel-launches-offset-strategy-lists-key-technologies/

You also may wish to read my 19 March 2016 post on Arthur C. Clarke’s short story “Superiority.” You can decide for yourself if it relates to the “Third Offset Strategy.”

Leidos (formerly SAIC) is the prime contractor for the ACTUV technology demonstrator vessel, Sea Hunter. In August 2012, Leidos was awarded a contract valued at about $58 million to design, build, and operationally test the vessel.

In 2014, Leidos used a 32-foot (9.8 meter) surrogate vessel to demonstrate the prototype maritime autonomy system designed to control all maneuvering and mission functions of an ACTUV vessel. The first voyage of 35 nautical miles (65.8 km) was conducted in February 2014. A total of 42 days of at-sea demonstrations were conducted to validate the autonomy system.

Sea Hunter is an unarmed 145-ton full load displacement, diesel-powered, twin-screw, 132 foot (40 meters) long, trimaran that is designed to a wide range of sea conditions. It is designed to be operational up to Sea State 5 [moderate waves to 6.6 feet (2 meters) height, winds 17 – 21 knots] and to be survivable in Sea State 7 [rough weather with heavy waves up to 20 feet (6 meters) height]. The vessel is expected to have a range of about 3,850 miles (6,200 km) without maintenance or refueling and be able to deploy on missions lasting 60 – 90 days.

Source: DARPA

Raytheon’s Modular Scalable Sonar System (MS³) was selected as the primary search and detection sonar for Sea Hunter. MS³ is a medium frequency sonar that is capable of active and passive search, torpedo detection and alert, and small object avoidance. In the case of Sea Hunter, the sonar array is mounted in a bulbous housing at the end of a fin that extends from the bottom of the hull; looking a bit like a modern, high-performance sailboat’s keel.

Sea Hunter will include sensor technologies to facilitate the correct identification of surface ships and other objects on the sea surface. See my 8 March 2015 post on the use of inverse synthetic aperture radar (ISAR) in such maritime surveillance applications.

During a mission, an ACTUV vessel will not be limited by its own sensor suit. The ACTUV vessel will be linked via satellite to the Navy’s worldwide data network, enabling it to be in constant contact with other resources (i.e., other ships, aircraft, and land bases) and to share data.

Sea Hunter was built at the Vigor Shipyard in Portland, Oregon. Construction price of the Sea Hunter is expected to be in the range from $22 to $23 million. The target price for subsequent vessels is $20 million.

You can view a DARPA time-lapse video of the construction and launch of Sea Hunter at the following link:

http://www.darpa.mil/attachments/ACTUVTimelapseandWalkthrough.mp4

Source: DARPA

In the above photo, you can see on the bottom of the composite hull, just forward of the propeller shafts, what appears to be a hatch. I’m just speculating, but this may be the location of a retractable sonar housing, which is shown in the first and second pictures, above.

You can get another perspective of the launch and the subsequent preliminary underway trials in the Puget Sound in the DARPA video at the following link:

http://www.darpa.mil/attachments/ACTUVTimelapseandWalkthrough.mp4

During the speed run, Sea Hunter reached a top speed of 27 knots. Following the preliminary trials, Sea Hunter was christened on 7 April 2016. Now the vessel starts an operational test phase to be conducted jointly by DARPA and the Office of Naval Research (ONR). This phase is expected to run through September 2018.

DARPA reported that it expects an ACTUV vessel to cost about $15,000 – $20,000 per day to operate. In contrast, a manned destroyer costs about $700,000 per day to operate.

Source: DARPA

You can find more information on the ACTUV program on the DARPA website at the following link:

http://www.darpa.mil/news-events/2016-04-07

If ACTUV is successful in demonstrating the expected search and track capabilities against quiet submarines, it will become the bane of submarine commanders anywhere in the world. Imagine the frustration of a submarine commander who is unable to break the trail of an ACTUV vessel during peacetime. During a period of conflict, an ACTUV vessel may quickly become a target for the submarine being trailed. The Navy’s future conduct of operations may depend on having lots of ACTUV vessels.

28 July 2016 update: Sea Hunter ACTUV performance testing

On 1 May 2016, Sea Hunter arrived by barge in San Diego and then started initial performance trial in local waters.

Source: U.S. Navy

You can see a video of Sea Hunter in San Diego Bay at the following link:

https://news.usni.org/2016/05/04/video-navys-unmanned-sea-hunter-arrives-in-san-diego

On 26 July 2016, Leidos reported that it had completed initial performance trials in San Diego and that the ship met or surpassed all performance objectives for speed, maneuverability, stability, seakeeping, acceleration, deceleration and fuel consumption. These tests were the first milestone in the two-year test schedule.

Leidos indicated that upcoming tests will exercise the ship’s sensors and autonomy suite with the goals of demonstrating maritime collision regulations compliance capability and proof-of-concept for different Navy missions.

4 October 2018 update: DARPA ACTUV program completed. Sea Hunter testing and development is being continued by the Office of Naval Research

In January 2018, DARPA completed the ACTUV program and the Sea Hunter was transferred to the Office of Naval Research (ONR), which is continuing to operate the technology demonstration vessel under its Medium Displacement Unmanned Surface Vehicle (MDUSV) program. You can read more about the transition of the DARPA program to ONR here:

https://www.darpa.mil/news-events/2018-01-30a

It appears that ONR is less interested in the original ACTUV mission and more interested in a general-purpose “autonomous truck” that can be configured for a variety of missions while using the basic autonomy suite demonstrated on Sea Hunter. In December 2017, ONR awarded Leidos a contract to build the hull structure for a second autonomous vessel that is expected to be an evolutionary development of the original Sea Hunter design. You can read more about this ONR contract award here:

https://blog.executivebiz.com/2017/12/leidos-secures-navy-contract-to-help-build-2nd-sea-hunter-autonomous-vessel/

Echo Voyager Unmanned Underwater Vehicle (UUV)

Source: BoeingSource: Boeing

Echo Voyager is the third in a family of UUVs developed by Boeing’s Phantom Works. The first two are:

Echo Ranger (circa 2002): 18 feet (5.5 meters) long, 5 tons displacement; maximum depth 10,000 feet; maximum mission duration about 28 hours
Echo Seeker (circa 2015): 32 feet (9.8 meter) long; maximum depth 20,000 feet; maximum mission duration about 3 days

Both Echo Ranger and Echo Seeker are battery powered and require a supporting surface vessel for launch and recovery at sea and for recharging the batteries. They successfully have demonstrated the ability to conduct a variety of autonomous underwater operations and to navigate safely around obstacles.

Echo Voyager, unveiled by Boeing in Huntington Beach, CA on 10 March 2016, is a much different UUV. It is designed to deploy from a pier, autonomously conduct long-duration, long-distance missions and return by itself to its departure point or some other designated destination. Development of Echo Voyager was self-funded by Boeing.

Echo Voyager is a 50-ton displacement, 51 foot (15.5 meters) long UUV that is capable of diving to a depth of 11,000 feet (3,352 meters). It has a range of about 6,500 nautical miles (12,038 km), and is expected to be capable of autonomous operations for three months or more. The vessel is designed to accommodate various “payload sections” that can extend the length of the vessel up to a maximum of 81 feet (24.7 meters).

You can view a Boeing video on the Echo Voyager at the following link:

https://www.youtube.com/watch?v=L9vPxC-qucw

The propulsion system is a hybrid diesel-electric rechargeable system. Batteries power the main electric motor, enabling a maximum speed is about 8 knots. Electrically powered auxiliary thrusters can be used to precisely position the vessel at slow speed. When the batteries require recharging, Echo Voyager will rise toward the surface, extend a folding mast as shown in the following pictures, and operate the diesel engine with the mast serving as a snorkel. The mast also contains sensors and antennae for communications and satellite navigation.

Source: screenshot from Boeing video at link aboveSource: screenshot from Boeing video at link above

The following image, also from the Boeing video, shows deployment of a payload onto the seabed.Source: screenshot from Boeing video at link above

Initial sea trials off the California coast were conducted in mid-2016.

Boeing currently does not have a military customer for Echo Voyager, but foresees the following missions as being well-suited for this type of UUV:

Surface and subsurface intelligence, surveillance, and reconnaissance (ISR)
ASW search and barrier patrol
Submarine decoy
Critical infrastructure protection
Mine countermeasures
Weapons platform

Boeing also expects civilian applications for Echo Voyager in offshore oil and gas, marine engineering, hydrography and other scientific research.

4 October 2018 update: Progress in Echo Voyager development

Echo Voyager is based at a Boeing facility in Huntington Beach, CA. In June 2018, Boeing reported that Echo Voyager had returned to sea for a second round of testing. You can read more on Echo Voyager current status and the Navy’s plans for future large UUVs here:

http://www.latimes.com/business/la-fi-boeing-echo-voyager-20180623-story.html

Echo Voyager operating near the surface with mast extended. Source. Boeing

Is Arthur C. Clarke’s 1953 Short Story “Superiority” a Parable for Today?

March 19, 2016All Posts, Literature, Military technology, National Security, Science FictionArthur C. Clarke, Bill Sweetman, defense programs, SAIC, SuperiorityDrummer

Peter Lobner

Sir Arthur Charles Clarke was a British science fiction writer, science writer and futurist who became recognized worldwide for his great many short stories and novels, which have captivated readers since the early 1950s. You might know him best as the author of “Childhood’s End” and “2001: A Space Odyssey.”

Source: http://amazingstoriesmag.com

In the short story “Superiority,” which was published in his 1953 story collection, Expedition to Earth, Clarke describes a spacefaring federation of planets involved in a protracted war with a distant adversary, with both sides using comparable weaponry. The allure of advanced weaponry and “a revolution in warfare” led one side to allocate their resources away from traditional weaponry and invest instead in fewer vessels with advanced weapons systems that were sure to turn the tide of the war: the Sphere of Annihilation, the Battle Analyzer, and the Exponential Field.

As you might guess, the outcome was somewhat different, because:

The new systems was “almost perfected in the laboratory”
There were unforeseen complications and delays during development of the operational systems
There were unforeseen support and training requirements that compromised the operational use of the new systems and introduced new vulnerabilities
The new systems failed to deliver the expected “force multiplier” effect
There were unforeseen consequences from the operational use of some new weaponry

The adversary won the war with a numerically superior fleet using obsolete weapons based on inferior science.

Take time now to read this short story at the following link:

http://www.mayofamily.com/RLM/txt_Clarke_Superiority.html

Bill Sweetman has written an interesting commentary on Arthur C. Clarke’s “Superiority,“ in the 14 March 2016 issue of Aviation Week and Space Technology. His commentary, entitled, “Timeless Insight Into Why Military Programs Go Wrong – The history of defense program failures was foretold in 1953,” finds stunning parallels between the story line in “Superiority” and the history of many real-world defense programs from WW II to the present day. You can read Bill Sweetman’s commentary at the following link:

http://aviationweek.com/defense/opinion-timeless-insight-why-military-programs-go-wrong

Considering SAIC’s long-term, significant role in supporting many U.S. advanced war-fighting and intelligence system programs, many of us were the real-world analogs of the thousands of scientists, engineers, and managers working for Professor-General Norden, the Chief of the Research Staff, in “Superiority.” In Bill Sweetman’s commentary, he asks, “Is ‘Superiority’ a parable?” Based on your own experience at SAIC and elsewhere in the military – industrial complex, what do you think?

If you still haven’t read “Superiority,” please do it now. It’s worth your time.

Spearhead-class Joint High-speed Vessel (JHSV) Provides the Navy with an Express Delivery Service

May 30, 2015All Posts, Marine Technology, Military technology, Naval ships & systemsEPF, Expeditionary Fast Transport, JHSV, Joint High-Speed Vessel, Military Sealift Command, Spearhead, USNS Minninocket, USNS TrentonDrummer

Peter Lobner

Updated 4 September 2015 and 16 February 2016

Along San Diego Bay, you’ll see a great variety of military and civilian vessels. The San Diego Port District has posted a chart on Shelter Island to help tourists and locals identify the more common types of Navy ships that are based here. Occasionally, you might be treated to the sight of an uncommon vessel, such as the catamaran USNS Minninocket (JHSV-3), shown below. This ship is owned and operated for the Navy by the Military Sealift Command.

Source: Author photo

JHSV ships are fast, modest-sized, non-combatant vessels designed to transport about 600 tons troops and equipment. Their modular design enables rapid reconfiguration of the 20,000-ft2 cargo bay to support various missions. For example, a JHSV vessel can accommodate an Army or Marine Corps company-sized unit (typically 80 – 250 troops) and vehicles, or be reconfigured to transport up to 312 troops.

The vessel has a length of 338′ (103 m), a beam of 93’ 6” (28.5 m), and a draft of 12’ 7” (3.83 m), and a displacement of about 2,400 tons. The catamaran design of the hull and the location of the large cargo deck are evident in the following pictures:

Source: U.S. Navy

Ship propulsion is provided by four 12,200 hp (9.1 MW) diesel engines in the catamaran pods driving waterjets that deliver a maximum speed of about 43 kts. Range is about 1,200 miles at 35 kts. The ship has facilities for one helicopter. As of the FY 2015 budget, 11 JHSVs have been funded.

You can read a summary of this Navy ship program, including the status of resolving FY 2013 and FY 2014 recommendations for improvement and new FY 2015 recommendations, at the following link:

http://www.dote.osd.mil/pub/reports/FY2015/pdf/navy/2015jhsv.pdf

You can watch a short video on this intriguing vessel at the following link:

https://www.youtube.com/watch?v=aWRNIXNGGjA

In 2016, the Navy plans to conduct shipboard tests of the BAE Systems prototype electromagnetic railgun aboard USNS Trenton (JHSV-5), including live firing GPS-guided hyper-velocity projectiles (HVP) at targets 20 miles or more away. While the JHSV is a non-combatant, it was chosen for this test program because of the availability of adequate space in the cargo hold and topside for the prototype weapon system. An artist rendering of the planned railgun installation is shown below.

Source: U.S. Navy

4 September 2015 update: Joint High-speed Vessel (JHSV) redesigned Expeditionary Fast Transport (EPF)

Now there’s a new root designator for U.S. Navy vessels: “E” for “expeditionary support.”

Navy Secretary Ray Mabus and Adm. Jon Greenert, Chief of Naval Operations, changed the designations of three kinds of ships to the new expeditionary support category. The JHSV joint high-speed vessels will become EPF, for expeditionary fast transport.

16 Feb 2016 Update: EPFs require structural upgrades to cope with heavy seas; operational suitability in question

The Navy has contracted for 10 of the shallow-draft Expeditionary Fast Transports (EPFs) from Austal USA, which constructs these ships at its Mobile, AL shipyard. Five EPFs have been delivered and have made deployments to Africa, the Middle East and the Far East. The 6^th ship, USNS Brunswick, was just delivered to the Navy on 14 January 2016. Four more ships (EPF-7 to EPF-10) remain to be delivered under the current contract. EPF-11 and -12 have been funded by Congress in the 2015 and 2016 omnibus appropriations bills, but contracts with the Navy remain to be finalized.

Operating as part of the U.S. Navy’s Military Sealift Command, EPFs are intended primarily for use in littoral waters. However, they are expected to be able to make fast open ocean transits and operate with other Navy units in the open ocean.

The lead ship, USNS Spearhead, was damaged in moderate seas while transiting the Atlantic en route to Europe in September 2014. The ship took a significant pounding from wave slamming onto the “forepeak”, which is the bottom of the foremost part of the flat hull section spanning the two catamaran hulls. Repairs to the ship cost about $511,000. The repairs included structural reinforcement of the bow, which added 1,736 pounds to the ship’s weight and displaced about 250 gallons of fuel.

Source: U.S. Navy

On 22 September 2015, Michael Gilmore, Director, Operational Test and Evaluation, issued the following report to the Secretary of Defense: “Follow-on Operational Test and Evaluation (FOT&E) Report on the Joint High Speed Vessel (JHSV).”

Key points in this report related to the weak bow are:

There is a serious problem with the bow structure related to the ship’s Safe Operating Envelope (SOE), which is designed to limit wave impact loads on the bow structure.
- The Navy accepted compromises in the bow structure during construction of these ships.
- Multiple ships of the class have suffered damage to the bow structure, and repairs/reinforcements are in progress class-wide.
Operating the ship outside of the SOE or encountering a rogue wave that is outside of the current sea state limits can result in sea slam events that cause structural damage to the bow structure of the ship.
The SOE operational restrictions are major limitation that must be accounted for in all missions assigned to these ships. The following limits apply:
- At Sea State 3 or less (significant wave height up to 1.25 meters), the ship may operate up to its maximum speed
- At Sea State 4 (significant wave height up to 2.5 meters) the ship must slow to 15 knots.
- At Sea State 5 (significant wave height up to 4 meters) the ship must slow to 5 knots.
- Above Sea State 5, the ship can only hold position and await calmer seas.
The Navy has spent almost $2.4 million strengthening the bows of the first four vessels delivered since late 2012.
- The 5^th operating ship, the USNS Trenton, will be modified during its next planned shipyard visit.
- Later EPFs will be modified during construction, before delivery to the Navy.
There has been no heavy weather testing yet to verify if the fixes are sufficient.

In addition to the bow structural problems, Michael Gilmore’s report noted that the EPFs have the following significant problems:

The EPF cannot effectively inter-operate with a Mobile Landing Platform in the open ocean.
Unplanned limitations exist on launching a SEAL Delivery Vehicle (SDV) and associated support boats in the open ocean
Operational availability is limited primarily by the poor reliability of the Ship Service Diesel Generators, waterjets, and the Ride Control System (RCS).

You can download Michael Gilmore’s complete report at the following link:

http://news.usni.org/wp-content/uploads/2015/10/9-22-15-Follow-On-Operational-Test-and-Evaluation-FOTE-Report-on-the-….pdf

Short summary articles on these matters are available at the following links to Bloomberg Business and Seapower:

http://www.bloomberg.com/news/articles/2016-01-14/navy-s-fast-sealift-ships-can-t-stand-buffeting-from-high-seas

and

http://www.seapowermagazine.org/stories/20151019-epf.html

Severe ship damage from very high sea states and rogue waves is always a possibility for ships operating in the open ocean. However, the bow damage experienced by the EPFs operating in the open ocean points to underlying design and operational issues for this type of ship.

For additional commentary on problems associated with bow damage to vessels operating in the open ocean, I refer you to the short video at the following link:

https://www.youtube.com/watch?v=8-QNAwUdHUQ