omniomni/omni-engineering huggingface dataset:
Jon Chitty. Air Commodore Jon Chitty, OBE RAF, was Commandant of the Air Training Corps (ATC) from 3 May 2002 until July 2005.

Biography
Air Commodore Jon Chitty was brought up and educated in Sheffield. He attended King Edward VII School (photo) and left with an RAF Scholarship to undertake an Aeronautical Engineering degree at Imperial College London from 1971 to 1974.

He then undertook officer and specialist training at RAF College Cranwell during the following year. His first posting was to RAF Kinloss as Officer Commanding Armament Servicing Flight supporting the 3 Nimrod Squadrons.
Postings to RAF Gutersloh and RAF Wattisham followed before he was posted to DSGT at Cranwell as an instructor.

He left on promotion a year later to command the Armament Engineering Squadron at RAF Coningsby and was the project officer for the introduction to service of the Tornado F2. A range of tours at RAF Stanley (Falkland Islands), HQ Strike Command and RAF Wattisham were followed by promotion to Wing Commander and a return to Strike Command to lead the Tornado Role Office in September 1989.

His involvement in the fleet support and modification programmes for the Tornado squadrons involved in the Gulf War led to his award of the OBE in the Gulf War Honours list.
He then attended the Advanced Staff Course at Bracknell before his posting to RAF Bruggen as Officer Commanding Engineering and Supply Wing. At the end of a busy 3 years in Germany, he was promoted to group captain and posted to the DD Weapons (RAF) appointment at RAF Wyton. He served 4 years in post before moving to the Ordnance Board as the Air Strike Division Leader in December 1999.

This tour as the UK specialist for the provision of independent safety and suitability for service advice for all air-launched and ground-based air defence munitions, also involved taking the UK-lead for Insensitive Munitions nationally and internationally. He left the newly formed Defence Ordnance Safety Group to take up the dual-appointment of Air Officer Commanding Air Cadets and Commandant of the Air Training Corps, at the RAF College Cranwell, on 3 May 2002.

The appointments of Air Officer Commanding Air Cadets and Commandant ATC were split on 24 March 2003 with the former appointment passed to the Chief Executive of the Royal Air Force Training Group Defence Agency and the latter becoming Commandant Air Cadets.

Jon is an Advanced Instructor in scuba diving and upon leaving the Royal Air Force at the end of this tour, he founded a scuba diving equipment design and manufacture company, Venture Diving. Venture Diving has designed and brought the innovative Tank2Go twinset trolley and carrier to market. Jon also works as a consultant for a number of aerospace organisations.

References

Living people
Royal Air Force air commodores
Royal Air Force Air Cadets
People educated at King Edward VII School, Sheffield
Graduates of the Royal Air Force College Cranwell
Year of birth missing (living people)
Software walkthrough. In software engineering, a walkthrough or walk-through is a form of software peer review "in which a designer or programmer leads members of the development team and other interested parties through a software product, and the participants ask questions and make comments about possible errors, violation of development standards, and other problems". The reviews are also performed by assessors, specialists, etc. and are suggested or mandatory as required by norms and standards.

"Software product" normally refers to some kind of technical document.  As indicated by the IEEE definition, this might be a software design document or program source code, but use cases, business process definitions, test case specifications, and a variety of other technical documentation may also be walked through.

A walkthrough differs from software technical reviews in its openness of structure and its objective of familiarization. It differs from software inspection in its ability to suggest direct alterations to the product reviewed. It lacks of direct focus on training and process improvement, process and product measurement.

Process 
A walkthrough may be quite informal, or may follow the process detailed in IEEE 1028 and outlined in the article on software reviews.

Objectives and participants
In general, a walkthrough has one or two broad objectives: to gain feedback about the technical quality or content of the document; and/or to familiarize the audience with the content.

A walkthrough is normally organized and directed by the author of the technical document.  Any combination of interested or technically qualified personnel (from within or outside the project) may be included as seems appropriate.

IEEE 1028 recommends three specialist roles in a walkthrough:
The author, who presents the software product in  step-by-step manner at the walk-through meeting, and is probably responsible for completing most action items;
The walkthrough leader, who conducts the walkthrough, handles administrative tasks, and ensures orderly conduct (and who is often the Author); and
The recorder, who notes all anomalies (potential defects), decisions, and action items identified during the walkthrough meetings.

Further reading

See also
 Cognitive walkthrough
Software review

References

Software review
Zinc chromate. Zinc chromate, ZnCrO4, is a chemical compound, a salt containing the chromate anion, appearing as odorless yellow powder or yellow-green crystals, but, when used for coatings, pigments are often added. It is used industrially in chromate conversion coatings, having been developed by the Ford Motor Company in the 1920s.

Production

A process known as the Cronak process is used to create zinc chromate for use in industry.  This process is done by putting zinc or a zinc plated metal in a solution of sodium dichromate and sulfuric acid for a few seconds. Zinc chromate can also be synthesized by using neutral potassium chromate (K2CrO4) and zinc sulfate (ZnSO4), which forms a precipitate.

K2CrO4 + ZnSO4 → ZnCrO4 + K2SO4

Uses

Zinc chromate's main use is in industrial painting as a coating over iron or aluminium materials. It was used extensively on aircraft by the US military, especially during the 1930s and 1940s. It is also used in a variety of paint coatings for the aerospace and automotive industries. Its use as a corrosion-resistant agent was applied to aluminium alloy parts first in commercial aircraft, and then in military ones. During the 1940 and 1950s it was typically found as the "paint" in the wheel wells of retractable landing gear on US military aircraft to protect the aluminium from corrosion.  This compound was a useful coating because it is an anti-corrosive and anti-rust primer. Since it is highly toxic, it also destroys organic growth on the surface.  Zinc chromate is also used in spray paints, artists' paints, pigments in varnishes, and in making linoleum.

When used as a pigment, it is known as Zinc Yellow, Buttercup Yellow or Yellow 36. It is rarely used in art because the pigment degenerates into a brown color. This effect can be seen in Georges Seurat's famous painting A Sunday Afternoon on the Island of La Grande Jatte. The degradation of zinc yellow in Seurat's painting was thoroughly investigated and these findings were subsequently employed in a digital rejuvenation of the painting.

Zinc chromate putty was used as sealant in addition to two O-rings between sections of the failed solid rocket booster on Space Shuttle Challenger. Blowholes in this putty may have been a minor contributor to its catastrophic loss.

Toxicity

Recent studies have shown that not only is zinc chromate highly toxic, it is also a carcinogen because it contains Cr(VI). Exposure to zinc chromate can cause tissue ulceration and cancer. A study published in the British Journal of Industrial Medicine showed a significant correlation between the use of zinc chromate and lead chromate in factories and the number of cases in lung cancer experienced by the workers. Because of its toxicity the use of zinc chromate has greatly diminished in recent years.

References

chromate
zinc
Software technical review. A software technical review is a form of peer review in which "a team of qualified personnel ... examines the suitability of the software product for its intended use and identifies discrepancies from specifications and standards. Technical reviews may also provide recommendations of alternatives and examination of various alternatives" (IEEE Std. 1028-1997, IEEE Standard for Software Reviews, clause 3.7).

"Software product" normally refers to some kind of technical document. This might be a software design document or program source code, but use cases, business process definitions, test case specifications, and a variety of other technical documentation, may also be subject to technical review.

Technical review differs from software walkthroughs in its specific focus on the technical quality of the product reviewed.  It differs from software inspection in its ability to suggest direct alterations to the product reviewed, and its lack of a direct focus on training and process improvement.

The term formal technical review is sometimes used to mean a software inspection.  A 'Technical Review' may also refer to an acquisition lifecycle event or Design review.

Objectives and participants
The purpose of a technical review is to arrive at a technically superior version of the work product reviewed, whether by correction of defects or by recommendation or introduction of alternative approaches.  While the latter aspect may offer facilities that software inspection lacks, there may be a penalty in time lost to technical discussions or disputes which may be beyond the capacity of some participants.

IEEE 1028 recommends the inclusion of participants to fill the following roles:

The Decision Maker (the person for whom the technical review is conducted) determines if the review objectives have been met.

The Review Leader is responsible for performing administrative tasks relative to the review, ensuring orderly conduct, and ensuring that the review meets its objectives.

The Recorder documents anomalies, action items, decisions, and recommendations made by the review team.

Technical staff are active participants in the review and evaluation of the software product.

Management staff may participate for the purpose of identifying issues that require management resolution.

Customer or user representatives may fill roles determined by the Review Leader prior to the review.

A single participant may fill more than one role, as appropriate.

Process
A formal technical review will follow a series of activities similar to that specified in clause 5 of IEEE 1028, essentially summarised in the article on software review.

References 

Software review
Bharathidasan Institute of Technology. Bharathidasan Institute of Technology (or BIT)  (formerly the School of Engineering and Technology) was established by Bharathidasan University in 1999. BIT was located in the downtown Khajamalai Campus and was moved to the South Campus (Technology Campus) in 2001. In addition to the academic blocks, the campus houses the Indoor Sports Complex and residential complex. Bharathidasan University operates shuttle services to the adjacent Main Campus.

The school started with four branches of technology: Biotechnology, Information Technology, Petrochemical Technology and Pharmaceutical Engineering & Technology. A B.Tech level course in Automobile Technology was introduced in 2004 apart from postgraduate programmes of M.Tech in Software Engineering and M.Pharm in Pharmaceutics, in 2005. An M.Tech programme in Energy Conservation and Management is offered. The school was made autonomous from 2005.

Being a part of Bharathidasan University and its proximity to the main campus has proven advantageous to the institute's development in particular in the field of Computer Science and Biotechnology. The institute shares facilities and enjoys the support form the other departments of the university, especially in basic sciences.

The Bharathidasan Institute of Technology was taken over by Anna University, Trichy in 2007. It is a now a constituent college of Anna University, Trichy.

In 2007 the institute revived the School of Engineering and Technology (SET) offering a six-year integrated M.Tech program in Computer Science and Engineering, Biotechnology, Bio Informatics and Geo-technology.

The M.Tech program is integrated with a B.Tech degree in the respective disciplines. A B.Tech degree is awarded in three years instead of four for students could earn the required credits. These programs are offered in Tamil and English mediums. 

The first-year curriculum is common for all these programs. The second year onward, the academic activities of M.Tech programs are administered by the respective departments.

Alumni website 
Former students of BIT and SET started their alumni website in 2009.

References 

Engineering colleges in Tamil Nadu
Conversion coating. A conversion coating is a chemical or electro-chemical treatment applied to manufactured parts that superficially converts the material into a thin adhering coating of an insoluble compound. These coatings are commonly applied to protect the part against corrosion, to improve the adherence of other coatings, for lubrication, or for aesthetic purposes.

Types

The most common conversion coating processes for metal parts with industrial use include

 Chromate (aluminum, steel)
 Phosphate (steel)
 Bluing (steel)
 Black oxide (steel)
 Anodizing (aluminum)
 Stannate (magnesium)
 Molybdate (zinc, zinc-nickel)
 Zirconate (steel, aluminum, magnesium, galvanized steel).
 Titanate (steel, aluminum, magnesium).
 Plasma electrolysis (aluminum, magnesium, titanium)

Non-metallic substrates
Conversion coatings have been studied for non-metallic substrates, such as for protection of fluorozirconate glasses used in optoelectronics.

Regulations
US military specifications for conversion coatings include MIL-DTL-5541, MIL-DTL-81706, and MIL-DTL-5574, all dealing with aluminum.

See also 
 Rust converter – tannate conversion coating

References 

Coatings
Electric platform truck. Electric platform trucks are electric powered trucks with a large flat surface for holding objects to be transported. Some are also called warehouse utility vehicles, electric trolley carts, or powered platform truck vehicles.  Electric platform trucks can vary greatly in size, from large ride-on utility vehicles, to much smaller pedestrian operated trolleys. Electric tugs can be combined with nonpowered carts or hand trucks to achieve the same result.

A milk float is a specialised version of an electric platform truck specifically designed for the delivery of fresh milk, common in the United Kingdom.

See also 
 Neighborhood Electric Vehicle

Notes

Battery electric vehicles
Trucks
Boron phosphide. Boron phosphide (BP) (also referred to as boron monophosphide, to distinguish it from boron subphosphide, B12P2) is a chemical compound of boron and phosphorus. It is a semiconductor.

History
Crystals of boron phosphide were synthesized by Henri Moissan as early as 1891.

Appearance
Pure BP is almost transparent, n-type crystals are orange-red whereas p-type ones are dark red.

Chemical properties
BP is not attacked by acids or boiling aqueous alkali water solutions. It is only attacked by molten alkalis.

Physical properties
BP is known to be chemically inert and exhibit very high thermal conductivity. Some properties of BP are listed below:
 lattice constant 0.45383 nm
 coefficient of thermal expansion 3.65 /°C (400 K)
 heat capacity CP ~ 0.8 J/(g·K) (300 K)
 Debye temperature = 985 K
 Bulk modulus 152 GPa
 relatively high microhardness of 32 GPa (100 g load).
 electron and hole mobilities of a few hundred cm2/(V·s) (up to 500 for holes at 300 K)
 high thermal conductivity of ~ 460 W/(m·K) at room temperature

See also
 Boron arsenide
 Boron nitride
 Aluminium phosphide
 Gallium phosphide

References

Further reading
 
 
 

Boron compounds
Phosphides
III-V semiconductors
III-V compounds
Zincblende crystal structure
Caleb Warner. Caleb Warner (September 12, 1922August 24, 2017) was a marine and acoustical engineer and a classical trumpeter, who was best known for co-designing the Baldwin Spinet Electric harpsichord which was used on The Beatles' song "Because".

Biography 

Warner was the son of Harvard professor Langdon Warner. He attended Phillips Exeter Academy in New Hampshire, before studying acoustical and marine engineering at the University of Michigan, graduating in 1944. He served with the US Navy during World War II. He received an American-Scandinavian Foundation fellowship in 1947 to undertake further study in Sweden.

During the 1960s, while working as a development engineer, Warner, with Eric Herz, designed harpsichords for the Cannon Guild, founded by James H. Cannon, Jr. One of the harpsichords co-designed and built by Warner was the Baldwin Spinet Electric harpsichord which was used on The Beatles' song Because, and for the brief postlude on The Who's Live at Leeds album, and others.  Warner also designed and produced solid body rehearsal harpsichords and dulcimers. His harpsichords included examples with aluminium frames and electronic amplification. A harpsichord with a steel frame and a formica case, designed by Warner and Herz, accompanied Joel Spiegelman on an exchange visit to the USSR in 1965. Another Warner-designed and built harpsichord was gifted by a donor to the Chicago Symphony Orchestra in 1961.

Warner himself played the trumpet, and specialised in the music of Bach and his contemporaries.

References

Further reading
 Grant Me to Find the Task: The Life Story of Caleb Warner, by Caleb Warner and A. Wendy Warner, 2013. 

1922 births
2017 deaths
American acoustical engineers
American classical trumpeters
American male classical musicians
American marine engineers
Phillips Exeter Academy alumni
University of Michigan College of Engineering alumni
20th-century classical musicians
United States Navy personnel of World War II
Savoia-Marchetti S.74. The Savoia-Marchetti S.74 was a four-engine airliner developed by Savoia-Marchetti for Ala Littoria.

Design and development
The prototype first flew on 16 November 1934. Only three were ever built.

Operational history
The aircraft were used in passenger service. On 22 December 1937, one broke the speed record over , at . When Italy entered World War II in 1940, they were put into service as military transport aircraft for the Regia Aeronautica. None of the three survived the war.

Operators

Civil operators

 LATI

Military operators

 Regia Aeronautica

Specifications (S.74)

See also

References

S.74
1930s Italian airliners
Four-engined tractor aircraft
Aircraft first flown in 1934
Four-engined piston aircraft
High-wing aircraft
Failure reporting, analysis, and corrective action system. A failure reporting, analysis, and corrective action system (FRACAS) is a system, sometimes carried out using software, that provides a process for reporting, classifying, analyzing failures, and planning corrective actions in response to those failures. It is typically used in an industrial environment to collect data, record and analyze system failures. A FRACAS system may attempt to manage multiple failure reports and produces a history of failure and corrective actions.
FRACAS records the problems related to a product or process and their associated root causes and failure analyses to assist in identifying and implementing corrective actions.

The FRACAS method was developed by the US Govt. and first introduced for use by the US Navy and all department of defense agencies in 1985. The FRACAS process is a closed loop with the following steps:
 Failure Reporting (FR). The failures and the faults related to a system, a piece of equipment, a piece of software or a process are formally reported through a standard form (Defect Report, Failure Report).
 Analysis (A). Perform analysis in order to identify the root cause of failure.
 Corrective Actions (CA). Identify, implement and verify corrective actions to prevent further recurrence of the failure.

Common FRACAS outputs may include: Part Number, Part Name, OEM, Field MTBF, MTBR, MTTR, spares consumption, reliability growth, failure/incidents distribution by type, location, part no., serial no, symptom, etc.

References

Reliability analysis
Engineering failures
Military logistics
Henschel Hs 294. The Henschel Hs 294 was a guided air-to-sea missile developed by Henschel Flugzeug-Werke in Germany during World War II.

Design

The Hs 294 was a further development of the Henschel Hs 293 rocket powered glide bomb, but was of an elongated, more streamlined shape. When launched from an aircraft, it was guided to its target with the same Kehl-Straßburg remote control system used for both the Hs 293 and unpowered Fritz X glide bombs. Just before it reached its target, it was guided into the water whereupon its wings would break off and then it then would run like a torpedo, propelled by its remaining kinetic energy so it would explode below the waterline of the vessel. The proximity fuze was that of a regular German torpedo.

See also 
 List of German guided weapons of World War II
 Ruhrstahl X-4 - Max Kramer's air-to-air guided missile
 Yokosuka MXY-7 Ohka
 Project Pigeon
 LBD-1 Gargoyle
 GB-1
 GB-4
 GT-1 (missile)

References

World War II guided missiles of Germany
Guided bombs
Anti-ship missiles of Germany