About 33,200 results
Open links in new tab
  1. jet engine - What are the pros and cons of a pulsejet? - Aviation Stack ...

    Nov 12, 2019 · Pulse jets can be designed to develope maximum thrust at stand still or at any particular sub-sonic speed. If they are designed for maximum thrust at a reasonably high speed then their …

  2. Why don't planes use pulsejets? - Aviation Stack Exchange

    Dec 30, 2015 · It'd then power its jet engine and take off. Shortly after take off it would switch to the pulse engines and optionally turn the jet engine off. So why don't planes use pulsejets? Surely they …

  3. combustion - Would a pulsejet/turbine hybrid be efficient? - Aviation ...

    Apr 29, 2022 · This type of engine is really inefficient for a number of reasons, but to me this kinda resembles a piston engine; in the sense that it also works by small explosions. Unlike the pulsejet, …

  4. jet engine - How to start up a Lockwood-Hiller Valveless Pulse Jet ...

    Nov 12, 2019 · A pulse jet, theoretically, is a truly amazing engine that uses an invisible piston to compress the next batch of air and fuel, a resonant shock wave. A properly shaped "tuned pipe" …

  5. jet engine - How big can a pulsejet be? - Aviation Stack Exchange

    Feb 1, 2018 · The bigger the pulse jet, the combustion becomes lower frequency but much great power per pulse. So it generates low frequency of very loud pulses, which in turn causes low frequency of …

  6. jet engine - What causes pulses to appear in some contrails? - Aviation ...

    Jul 22, 2022 · An aircraft at high altitude passed by faster and higher than normal, about 50% faster when compared to others in this recording. 2 mins later it appeared that half of the contrail developed …

  7. Can a pulse jet be used on a light GA aircraft?

    Nov 7, 2016 · I have an idea for designing a light, cheap and fast 2-seated private airplane... I was thinking about using a pulse jet engine which is simple to design and build, and is cheap too. Noise is …

  8. Why do jet engines have a maximum speed? - Aviation Stack Exchange

    Dec 30, 2022 · What's the scientific background behind a jet engine's top speed? Jet engines increase efficiency at higher airflow rates, so why does the efficiency stop increasing at some point?

  9. jet engine - What is a good place to start learning about pulse jets ...

    Jul 5, 2016 · 5 I'm a student who is curious about designing his own pulse jet engine, I am wondering if there are any schematics designs, notes, and other related materials I could/should study to learn …

  10. jet engine - Are there any calculations involved for designing pulse ...

    Dec 22, 2017 · Are there any requirements for calculations to determine things like exhaust length, combustion chamber size, etc? Also, does the end of the combustion chamber need to be a semi …