Engineering

Hi. Choking a carburetor to start an engine increases the fuel amount or ratio to air. It is done because the ambient air is cold or because the engine metal block is cold ?

I developed and prototype for an invention for collecting energy from the sun. It stores a maximum of .6V. It is very inefficient and I feel as though the prototype can be improved dramatically. (A novel invention for collecting energy from the sun.) <- real title

Greetings. Am trying to come up with a mechanism (manual or motorized) that can vary the electrical length of a conductor. Have some pending attempts to try and would like your suggestions. A circular electric conductor has its end terminals A and B at fixed positions. Need some way to vary the electrical conductive length from A to B in a 1:10 ratio. Like from 10cm retracted, to 100 cm. expanded circumference. (varying its diametre) The ideal would be telescopic elements that do not exist in curved shape. How would you do it ? 🤔 Thanks.

maybe cracked iphone.please its important for me. is there a device that blocks radio waves and microwaves completely please? maybe to build a device if there is not please.

The “Continuum” assumption in propulsion and fluid dynamics is that their atomic structure will be ignored and they will be considered as capable of being subdivided into infinitesimal pieces of identical structure. In this way it is legitimate to speak of the properties of a continuum – e.g., density, pressure, velocity – as point properties. Now, this assumption needs to be modified, for example if the “Non-Continuum” assumption is that the atoms/molecules/particles ( although fundamental particles are modernly understood as point masses, let’s ignore this issue for now because most of the reaction in propulsion and fluid dynamics is chemical and not Atomic/Nuclear) can…

Greetings. When a LED specifications shows a 30 milliamperes maximum current and is driven to a third as 10 mA or even less, the life expectancy is considerably extended and its behavior as a panel indicator is still fully useable. Is a laser diode with a maximum current specified as 30mA also perform as a beam emitter at a third of the current (10ma) or less; or lasing is impaired and there is a minimum current needed ? What is the term specified for the current that starts to produce lasing ? If a laser diode is needed in operation 365 days non-stop; would underpowering it extend its life equally as happens with a LED ? What type of visible light laser…

Hi all, I'm working on a project where I want to evaluate the performance of different microstructures of a material as candidates for an atmospheric entry heat shield. I have thermal conductivities for these materials, as well as atmospheric conditions and a required temperature gradient across the heat shield, so I'd like to make some rough calculations for the thickness required of each material. From there I can make comments on the size and weight required. I'm not sure how to calculate the heat flux through the materials in order to determine their thickness, does anyone know how I might go about that? I know that I'm not taking a lot into account (like ab…

Scenario; A room has a temperature of 10c and high humidity. We want to increase the comfort of the occupier. Is it generally energetically more economical to bring down the humidity or warm up the room a few degrees to increase comfort?

Many parts of North countries tend to have harsh winters. In addition to that in many villages tend to have bad heating systems which would make living in this area hard for the people. You have to design an efficient heating system that will be sustainable for years and will be affordable for the people considering that electricity tend to be more expensive in this places. Efficiency- a system that would produce heat the most efficient and provide explanation/evidence Affordability- total price of the system should be low enough to be done by the government for each village or be purchased by the village instead Sustainability - explain how this design wi…

hello what is current in capacitor 4.7uF and 3.3uF which will have more current

Hello How diode add voltage 1 diode give 111v and two diode 221V how diode add voltage

Hello what is application of Zener diode in smps

It's a reasonable question, I think. These are jumbucks: This is a tucker bag (carried in front): This seems a problem, in terms of fit. I feel there are limited possible explanations for the jolly swagman's achievement of jumbuck insertion. 1. 19th century sheep in Australia were miniaturized, in an amazing secret leap forward of GM technology. 2. Tucker bags were capable of massive elastic stretching. 3. Lyricist Banjo Paterson reported falsified data when he wrote the line, And he sang as he shoved that jumbuck in his tucker bag Are there other possible means of jumbuck insertion and containment that have …

A Korean robotics engineer has been crushed to death by a robot at a food packaging plant in South Korea while checking out reports of a malfunctioning sensor system. https://www.bbc.co.uk/news/world-asia-67354709 Acoording to the South Korean news agency Yonhap 연합뉴스, the robot which mistook him for a box of vegetables grabbed him, and then pushed his body against a conveyor belt, crushing his face and chest. The robot which had been newly installed in a pepper sorting plant in the Donggoseong Export Agricultural Complex in South Gyeongsang province was designed to lift boxes of peppers onto pallets. An initial test run scheduled for 6 November had been del…

Persistent rumours that the PLAN (Peoples Liberation Army Navy) of Communist China had a nuclear submarine disaster in late August of this year have reappeared recently with new details. https://www.youtube.com/watch?v=3X2BjWnq9R8 According to this update, a CCP type 093 nuclear submarine #417 became trapped in one of the Chinese navy’s own anti-submarine underwater boom defense systems in the Yellow Sea, near the mainland Chinese coastal city of Shantou, to the southwest of Taiwan. According to a Twitter/X post by @Luoxiangzy on 19th October, the incident occurred at 8.30 a.m. on Monday August 21. The submarine #417 had sailed from Qingdao naval base and w…

In existing VR systems, the disconnect between visual cues and vestibular sensations impacts a person's sense of balance and spatial orientation: What you see and experience visually might not align with what your inner ear and body feel. For example, you may be visually moving in one direction while your body remains stationary. This disconnect between visual and vestibular cues can lead to sensations of dizziness, disorientation, and imbalance. what modifications or design considerations(general/specific) can be implemented(to headset or environment) to minimize or alleviate the sensations of dizziness, disorientation, and imbalance that may arise from this mismatch? …

Since at least WW2, scientists and science fans have been speculating about how to accelerate a spaceship fast enough to reach other star systems. The most sought-after method seems to be nuclear fusion (I think,) currently out of reach. But what’s wrong with nuclear fission? If the power of the Hiroshima bomb could be channelled, I would imagine that would get us to alpha centauri pretty damn swiftly. I did hear once that governments will not allow the use of nuclear for space exploration. Anyone know if this is true? Cheerz GIAN🙂xx PS As you've probably guessed I'm not a scientist but I hope to be one day

Hello all, I hope I have the correct category. Affinity installed a Itron Everblue Cyble water meter in my front garden. I can't find any figures. Can I read it myself or do I have to rely on the smart readings please? I like to check my bills Enclosed is a terrible picture, it's a long way down. Greetings

hello using invisibility cloaks i would like to ask how to generate wormholes from wifi, sdr, and 5g wireless. thanks very much.

What is the most cost-effective way to cool a home? We live in very hot climate in this Socal valley. We had many days over 100 F and days over 110 F. We have 2 large evaporative coolers, many electric fans, and central A/C. We are able to stay cool on the hottest days using just our 2 evaporative coolers and maybe a couple of hours of A/C on the hottest days. It seems we are saving energy by not using A/C all day, but rather using most evaporative coolers? Should energy companies be encouraging customers to use evaporative coolers?

Asking here as it seems more of an engineering question Looking at the recent spaceX launch, (ok it failed) there seems to be a move to build bigger and bigger rockets to take us in to space. How much is this really needed? Would we be better off expanding the ISS (or I think the plan is to build a new space station) which can act as a launchpad to take us to the moon, this could be equipped with what could be mini shuttle craft (like on star trek) that can dock and un dock as needed. On earth we can already do vertical take off and landing with aircraft, so these shuttle craft would also be capable of this. We currently have the smaller but reliabl…

n 2022 the BBC filmed inside the OceanGate Titanic submersible that has now gone missing during a dive to see the wreck of the Titanic, which lies on the seafloor about 12,500 feet below the surface, and around 370 miles off the coast of Newfoundland. https://www.bbc.co.uk/news/av/world-us-canada-65958697 In the screenshot below, Stockton Rush the Chief Executive of OceanGate who is believed to be one of five people missing aboard the submersible is seen explaining how it works “It’s got one button, and that’s it. We run the sub with this game controller - It’s made by Logitec, but it’s basically a Sony PS style controller” he says - What could possi…

Hi all, my questions are as follows... When going to college is it possible to get a mathematical Engineering degree with an emphasis in computer science and computer engineering as well as mechanical engineering? I need a degree that will cover these four fields reasonably or is mathematical engineering enough? Also, will have to get multiple Degrees?

A report by NATS (National Air Traffic Services) says that a catastrophic failure of the UK air traffic control system on the August 28 Bank Holiday this year was a caused by a “one in 15 million’ software failure event. https://publicapps.caa.co.uk/docs/33/NERL%20Major%20Incident%20Investigation%20Preliminary%20Report.pdf According to this report, a key sub-system called FPRSA-R (Flight Plan Reception Suite Automated) was thrown into a fail-safe shutdown mode when it attempted to process a flight plan submitted by an un-named airline which included two identically named (but geographically distinct) waypoint markers. The back-up system which runs the same softw…

Hi. Surplus energy from solar panels has been heating water during the day in a non-sealed 200 litre (55 gallon) drum and used in winter as heating source during nightime. What materials could store more energy instead of water, that along weeks diminishes level from steamy evaporation ? Oils have a lower temperature coheficient but can be heated well to >200C; perhaps yielding a greater Q = mCΔT If heating from electric elements in a oil container has lots of iron, or aluminium junk submerged, would it keep more heat ? What simple common materials as rocks, glass?, polyethilene, metal junk in oil bath (or something else) -with no phase change com…