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  1. TugboatEng

    Air India 787 crashes on take off

    ATRU, ATU, TRU, FWD EP are the ones I can't guess.
  2. TugboatEng

    Air Force Diverts Missile Funds To Modify Qatari 747... Money is being taken from Sentinel ICBM program, which is over budget.

    Too open to be involved in classified projects but too vague of a description to mean anything. Are you a bureaucrat?
  3. TugboatEng

    Sizing Generator- Florida Nursery

    It has nothing to do with your problem it's just interesting to note that some voltages are not so common anymore and the difference will have little effect on your system. I have had boats in my fleet set up to run on 440, 450, 460, and 480 volts. When we plug into shore power I get 495V...
  4. TugboatEng

    Air Force Diverts Missile Funds To Modify Qatari 747... Money is being taken from Sentinel ICBM program, which is over budget.

    I wonder if the QCAA is trying to get their foot in the door as a regulatory agency with a bit less inertia than the FAA to advance modernization. What better advertising than to provide a civilian aircraft able to be certified as AF1?
  5. TugboatEng

    Air Force Diverts Missile Funds To Modify Qatari 747... Money is being taken from Sentinel ICBM program, which is over budget.

    3DDave, as engineer, I'd think you'd be more familiar with the challenges associated with differences in data collection methodology. You're comparing non-standardized data and assuming it has meaning. I trust your an intelligent person but here we go with that compartmentalization issue And...
  6. TugboatEng

    Use of Gate Valve for Throttling

    Remember, this is quite a large gate valve so the forces generated are going to be very high.
  7. TugboatEng

    Air India 787 crashes on take off

    I believe the videos showed no significant rudder deflections. The engines were at full power so any imbalance would require substantial rudder inputs, probably close to max as the speed is still low and the vertical stabilizer will have reduced control authority.
  8. TugboatEng

    Air India 787 crashes on take off

    There is no report yet. People familiar have simply claimed it isn't known to be mechanical because no advisories have been made. If the intention was to take down the plane or not, why would you even try to move both levers simultaneously? They could both be switched quickly enough...
  9. TugboatEng

    Explosion at fireworks storage facility in Northern California

    The owner of one of the companies storing fireworks in the building was denied a license to do so for being a convicted violent felon. Apparently he shot at another car in a road rage incident. He did receive state licenses... The property was zoned as agricultural. The building was not a...
  10. TugboatEng

    Air India 787 crashes on take off

    I read that the output range is 380-800 hz on the 787. I found this website with a detailed description of the electrical system. https://kb.skyhightex.com/knowledge-base/electrical-system-summary/ All power comes from 4 235vac generators. There are no separate 28vdc generators. 4 generator...
  11. TugboatEng

    Already Proven Technology Meets Milestone

    Scam is a bit harsh, maybe I'll change the title. I see projects like these and wonder how much public funding is being used to develop private capital. Are we investigating in development that has already been developed? Slapping the green energy title on it loosens scrutiny. I'm very...
  12. TugboatEng

    Already Proven Technology Meets Milestone

    The deep sea seals on semi-submersible oil drilling platforms do.
  13. TugboatEng

    Sizing Generator- Florida Nursery

    In that size range, if you go diesel, I think you'll find that the 65kW unit burns less fuel at all power levels the smaller units are capable of producing. Pricing is going to vary wildly.
  14. TugboatEng

    Corrosion on cable trays.

    Good, can you share a picture? We might be able to see if they're galvanized or electroplated.
  15. TugboatEng

    Already Proven Technology Meets Milestone

    https://apnews.com/article/tidal-energy-turbine-marine-meygen-scotland-ffff3a7082205b33b612a1417e1ec6d6 Forget about the energy side. There is potential for waste at every level. SKF is claiming their seals have survived 6.5 years. SKF has been making seals for a very long time. They know how...
  16. TugboatEng

    Corrosion on cable trays.

    The difference doesn't have to be 8.8 and stainless steel. Medium and high strength steels are anodic to the low carbon steel used to make strut channel. However, these structures are not immersed and not subject to the full effect of galvanic corrosion. It's very obvious that electroplated...
  17. TugboatEng

    Air Force Diverts Missile Funds To Modify Qatari 747... Money is being taken from Sentinel ICBM program, which is over budget.

    Right, every time you get called on your delusions it's time to return to the core subject. 3DDave made the demonstrably false insinuation. Let's start by correcting that so we can move forward.
  18. TugboatEng

    Explosion at fireworks storage facility in Northern California

    I'll be driving through there in two weeks. It's a very small town. This is going to hit them hard. Apparently one of the people killed was 18 and this was his first day on the job. The rest of the people seem to have some checkered pasts. They're all out of San Francisco. An ethnic connection...
  19. TugboatEng

    Air Force Diverts Missile Funds To Modify Qatari 747... Money is being taken from Sentinel ICBM program, which is over budget.

    Right, he tried restricting travel from China, the source of the virus, but got called racist. This video was the response from the people that prevented him from restricting travel. What is TACO by the way?
  20. TugboatEng

    Ceiling fan issue

    What do you mean the power is off? Is the dimmer set to zero or is there actually a switch that breaks the circuit? A diac/triac type dimmer does not completely break the circuit. Traditional dimmer knobs have a detent and switch near the zero position. Fans are usually shaded pole motors...

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