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  2. Meredith effect - Wikipedia

    en.wikipedia.org/wiki/Meredith_Effect

    The North American P-51 Mustang makes significant use of the Meredith effect in its belly radiator design. [1]The Meredith effect is a phenomenon whereby the aerodynamic drag produced by a cooling radiator may be offset by careful design of the cooling duct such that useful thrust is produced by the expansion of the hot air in the duct.

  3. Engine knocking - Wikipedia

    en.wikipedia.org/wiki/Engine_knocking

    Modern knock control-loop systems are able to adjust ignition timings for every cylinder individually. Depending on the specific engine the boost pressure is regulated simultaneously. This way performance is kept at its optimum while mostly eliminating the risk of engine damage caused by knock (e.g. when running on low octane fuel). [5]

  4. Pre-ignition - Wikipedia

    en.wikipedia.org/wiki/Pre-ignition

    The reduced engine speeds allow more time for autoignition chemistry to complete thus promoting the possibility of pre-ignition and so called "mega-knock". Under these circumstances, there is still significant debate as to the sources of the pre-ignition event. [3] Pre-ignition and engine knock both sharply increase combustion chamber temperatures.

  5. Thermoacoustic heat engine - Wikipedia

    en.wikipedia.org/wiki/Thermoacoustic_heat_engine

    The system has slight theoretical advantages over other generator systems like existing thermocouple based systems, or a proposed Stirling engine used in ASRG prototype. [10] SoundEnergy developed the THEAC system that turns heat, typically waste heat or solar heat into cooling with no other power source. The device uses argon gas. The device ...

  6. Video shows frightening moment truck loses load of lumber ...

    www.aol.com/video-shows-frightening-moment-truck...

    If that famous "Final Destination" logging truck scene already lurks in the back of your mind whenever you're driving on a highway, you may want to sit this one out.

  7. Hot air engine - Wikipedia

    en.wikipedia.org/wiki/Hot_air_engine

    The term "hot air engine" specifically excludes any engine performing a thermodynamic cycle in which the working fluid undergoes a phase transition, such as the Rankine cycle. Also excluded are conventional internal combustion engines , in which heat is added to the working fluid by combustion of fuel within the working cylinder.

  8. Elon Musk pay defeat sets up a 2025 legal battle that could ...

    www.aol.com/finance/elon-musk-pay-defeat-sets...

    Tesla pledged to keep fighting for Elon Musk's $56 billion pay to be restored, a battle that could make it all the way to the highest US court.

  9. Suspect in UnitedHealth executive murder was not a company ...

    www.aol.com/news/unitedhealth-group-ceo-andrew...

    Ivy League-educated Luigi Mangione was charged with murder on Dec. 9 for the killing of Thompson in a brazen shooting outside a Manhattan hotel before an industry conference, following a five-day ...