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Questions tagged [terminology]

For questions about words, phrases and definitions that are specific to engineering.

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1 answer
48 views

Fluid-dynamics question: proper term

I am looking for the term used to describe a situation I've encountered. I'll use a standard hydraulic cartridge that you'd use to keep a door shut as an example, except this one can be locked out ...
0 votes
0 answers
29 views

What is the name for the principle that multiple flexible lines between two points are geometrically equivalent to only one line?

I mentioned this idea to an architect and he immediately seemed to recognize it, but no amount of googling will tell me the name of it.
0 votes
1 answer
50 views

What is the meaning of the term 'recoverable ore'?

What is the meaning of the term 'recoverable ore' when used in contexts relating to mining and the extraction of resources/minerals? For example, several academic papers use the term 'recoverable ore' ...
0 votes
1 answer
118 views

Profile and pressure angle definition in gear geometry

In gear geometry there are 3 main angles, which can be misleading: Profile angle Pressure angle Operating pressure angle Further for simplicity I would restrict the area of interest to "spur ...
0 votes
1 answer
115 views

General term for a technique that ensures that two parts can be mated only if they are meant to be mated, and prevent any other part from mating

I am looking for the general term for any technique used to make sure that two parts can be mated only if they are meant to be mated, and prevent any other parts from mating. I need this term as I ...
0 votes
2 answers
148 views

Is there an english equivalent of a "Polplan" in structural analysis?

During my civil engineering studies, I've come across the notion of a "Polplan", a method for determining the possible infinitesimally flexible configuration of a statically indeterminate ...
3 votes
3 answers
2k views

What tool does one use to inspect pipe bevel angles?

My translation of a document published by the Pervouralsk New Pipe Plant: Inspection of pipe-end root face (“face ring”) Inspection of this type is carried out as required by the regulatory ...
0 votes
0 answers
29 views

What is air entrainment in the context of cement mortars and how is it achieved?

What is air entrainment in the context of cement mortars and how is it achieved? I'm not an engineer but I would like to get a rudimentary understanding of the mechanism whereby tiny bubbles of air ...
0 votes
2 answers
90 views

Different kinds of control loops

I am wondering about different categorizations of control loops. One categorization differentiates control loops with respect to what inputs they take: Open control loops. Closed control loops. 1a. ...
0 votes
0 answers
20 views

What is the correct term for a joint stabilized by three points of articulation?

I am trying to find the correct term for this mechanical principle. I have a biomechanical system where two objects are anchored to each other along three points of articulation. These points are ...
0 votes
1 answer
409 views

What is percent of thread depth when it comes to screws?

What, geometrically, is meant by percent thread depth? And, what would constitute 100% thread depth? I have been trying to derive the equation for thread percentage in the textbook Machine Tool ...
0 votes
1 answer
182 views

Confusing terminology for "normally closed/open" - It means the opposite in electronics (relays) versus fluids (valves)

I'm an electrician and "normally open" / "normally closed" is well known to me. I recently started to also work on heating systems including the pneumatic system that controls some ...
0 votes
0 answers
50 views

"Cost fordest" and "Porded point" - meanings of terms

Not so long ago in our organization there was a seminar on machine-building issues related to parallel robots. The seminar was attended (in a remote format) by an Iranian-speaking colleague who spoke ...
0 votes
2 answers
46 views

What does "shuffling" mean in the context of electrical grid power distribution?

What does shuffling mean in the following context and to what does "it" refer in the phrase "it is shuffled"? Should "it" be "they"? Are the three phases being ...
1 vote
1 answer
67 views

Technical name for a road "sliparound" lane

What is the technical name for this kind of road segment? I think the purpose of the lane on the right is to bypass the traffic lights at the intersection. I've heard that kind of lane referred to as ...
0 votes
1 answer
68 views

What would the name of this cable support be called?

I am building a cart that looks like the following: I am trying to implement some cost savings, and was wondering if I could potentially replace that long horizontal frame in the center by with some ...
0 votes
0 answers
52 views

What else can you call an acme fitting?

Selling products on Amazon, I've had a listing pulled over "trademark violation" for mentioning that an HVAC sets come with acme fittings and/or acme adapters. a) Is there any way that this ...
1 vote
1 answer
330 views

What does the Pg annotation mean

While I am continuing my practice with the German drawings of the V2 rocket, I have come across the PG designation a couple of times on different drawings. I originally thought it was for diameter, ...
0 votes
0 answers
18 views

How do engineers conceptualize "levels of analysis" (thermodynamic, fluid dynamical, mechanical, etc.)

In considering something like a jet engine, the thermodynamic analysis can be very mathematical and quite simple (e.g. one-dimensional flow). It's quite general and takes exactly the same mathematical ...
0 votes
1 answer
54 views

What does the word rectiplanar mean?

I have seen uses of the word 'rectiplanar' in some older math books but Google-ing doesn't really give an answer to its meaning. I have found though the following patent application where this word is ...
0 votes
1 answer
38 views

Correct term for "Cabin Window"?

Like the ones in a: cinema ticket selling point purge contention chamber (sci-fi) reception point of a public institution police control point (where one can attend someone else, behind a ...
3 votes
2 answers
1k views

What is this captive screw and barrel nut adjustment assembly called? Picture attached

I'm designing a precision adjustment bracket, and I'd like to have a component that allows the field tech to make small adjustments to push and pull on each axis of adjustment. I went looking to see ...
1 vote
1 answer
4k views

What is this sticky outy bit called?

We have a bit of wall sticking out of a flat wall ____ __________| |_______________ I have always called it the sticky outy bit of the wall and ...
2 votes
2 answers
253 views

Screw/Bolt to mount PCB with spring

I hope these exist and someone can tell me what they're called. What I'm looking for is screws to mount a PCB where the top of the screw is normal, then there's a smooth length, then a nut with a ...
1 vote
2 answers
448 views

How is the table of a 3d printer called?

There is this table, flatbed on the 3d printers. I need such a table which can move up and down, and I firmly believe there are such components on the market, but I can't find anything because I am ...
3 votes
1 answer
240 views

Difference between pressure suits and anti-g suits

This question might come across as a newbie one but are pressure suits and anti-g suits are two names for the same thing? Google didn't turn up differences between them specifically (if there is any), ...
1 vote
1 answer
1k views

What is the name of a half wall with posts on top that divides a space into two?

I am looking for specific terminology around a half wall that acts as a divider to split a space into two separate uses. The top half of this features a series of wooden posts. It essentially ...
0 votes
2 answers
176 views

3D linkage design - terminology

I am designing an animatronic head, which has five degrees of freedom: pitch, roll and yaw for the head part, and pitch and yaw for the neck part. However, the yaw movements for the head and neck are ...
0 votes
0 answers
31 views

Is there a term for this kind of eccentrically threaded fastener or washer that has wrench flats and curved faces

Is there a standard term for this fastener or for the kind of problem it is intended to address?
2 votes
2 answers
117 views

What is a "typical" in the context of control engineering?

When talking about control systems I sometimes hear the term "typical", however I have no clear understanding what it is. It's also mentioned in some codes (so far without definition), here'...
2 votes
0 answers
85 views

What is an "Optical Axis Rod"?

I'm in the process of designing a CNC/3d printer and I came across the term "Optical Axis rod" which seems to be the "standard" rod printers like Prusa use. But I can't find ...
2 votes
3 answers
107 views

What do I call this "cogwheel" that feeds tin cans to a specific position?

This is an above view of a system in which tin cans arrive via conveyor (1) to a "feeding star" ("подающая звезда" in Russian; No. 5) and are placed firmly in slot 4. (source in ...
0 votes
2 answers
29 views

How do you name rods to fix several parallel metallical plates in mechanical devices?

In many mechanical devices, especial old ones, like clocks, the design is used, where two or more parallel planes fixed and all moving parts are placed in between. In this case planes are fixed with ...
5 votes
5 answers
2k views

What is the term for diagonal bars which are making rectangular frame more rigid?

For example in yellow: if all bars were rectangular, the entige frame would tend to skew. To prevent this, these diagonal bars are mounted. What is the term for them?
0 votes
4 answers
157 views

What is the name of this kind of through-hole fastener?

I've seen these before but I don't know what they're called. It's a two piece insert that creates a through-hole between them. I drew a picture to help identity it!
4 votes
2 answers
351 views

What is the technical name for a water reservoir that retains its contents via vacuum and ambient air pressure?

This is a strange question for me because this is so extremely common, but I have never heard a name to describe exactly what it is. This is commonly used to provide water to animals from a trough or ...
2 votes
1 answer
4k views

What is really meant by HW/SW integration?

In many engineering descriptions I come across this term: "Hardware/Software integration" or "Hardware/Software integration testing" I came across couple of articles but they even ...
2 votes
2 answers
69 views

What is a constricting actuator called?

I'm looking for search terms, I'd like to find something like an electric hose clamp - a high-force, low-power, low-speed, motorized constricting mechanism. I already googled some terms various ...
2 votes
2 answers
336 views

What would you call this mining vehicle? (Ural-20R, used in mining)

On the image below is a mining machine produced by the Kopeysk Machine-Building Plant. I'm not sure how to call it in English. The Russian name is "prokhodchesko-ochistnoy kombain". Multitran offers ...
10 votes
5 answers
20k views

What do you call the difference between the on and off temperatures in a simple thermostat?

A simple thermostat will turn on at one temperature and off at a higher temperature. This keeps the thermostat from cycling on and off too quickly. The difference between these values is sometimes ...
-1 votes
2 answers
2k views

What does the term “trial card” mean in the field of engineering? [closed]

I heard this term from a colleague, however I wasn’t sure what it really meant.
1 vote
1 answer
61 views

What do we call these corrugated board sleeves put upon cardboard boxes to provide additional strength?

This kind of a sleeve from cardboard put upon a cardboard box is called обечайка (obechaika) in Russian. What do we call them in English? I was told on Proz.com that we call them "cardboard ...
3 votes
1 answer
144 views

What do we call these "transport frames made of wood" (обрешетки in Russian)

I'm translating a document in which there is a mention of обрешетки used for preparing goods (medical equipment of large size) for shipment. This term derives from reshetka (решетка) - lattice, and ...
-1 votes
1 answer
44 views

Is there a term to describe a room only used to stop sound getting in?

an acoustic anechoic chamber has mainly 3 features stopping sound getting in; stopping sound getting out; reduce echoey. Is there a term to describe a room only used to stop sound getting in?
1 vote
0 answers
17 views

Visualization/Verification software for interacting parts e.g. Gears etc

Not sure if there is any software that would model the movements of physical parts, or if even they can move with the given configurations ( software engineer background, no idea the lingo used here )....
2 votes
7 answers
4k views

What is the opposite of "parallel" in engineering?

The two towers of the Verrazano Bridge are not parallel: they are [???] to account for the curvature of the earth. What is that word?
2 votes
1 answer
253 views

How do Test Indicator Flexible Holders hold rigidly when tightened?

If one were to search on Amazon for "Test Indicator Flexible Holders" you will turn up many items using this mechanism (please ignore the magnetic base; I'm not focusing on that part, just the red ...
1 vote
2 answers
2k views

Difference between lead screw and worm screw?

I am confused whether a lead screw and a worm screw are the same exact thing. In my engineering workshop lab, they come up as separate things. For example, a worm screw is there in the indexing head ...
0 votes
0 answers
23 views

What's the term for interchanging a frequently used machine with a seldomly used one?

I'm trying to find out the term used for the practice of interchanging/relocating/swapping 2 machines to compensate the wear and tear caused by the operation frequency differences between them. This ...
0 votes
0 answers
11 views

Are dynamic frequency transmitters common? What's the terminology to use when searching for one?

Newbie question, moderately educated on RF but only the signal, not at all about the hardware. Looking to start experimenting on a concept that would require a dynamic shift over time from one ...