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  1. JeanAlesi

    Airplane oxygen system

    Hi all, I am currently designing a fixed oxygen system for a 4 place single. Typical system with 40 cu ft, charge on bottle at the baggage comp., discharge panel, flow fuse, warning light and mechanical gauge. I have yet to argue with the Feds for not having a system (typically cable or...
  2. JeanAlesi

    Single engine oxygen systems

    Hi all, I am currently designing a fixed oxygen system for a 4 place single. Typical system with 40 cu ft, charge on bottle at the baggage comp., discharge panel, flow fuse, warning light and mechanical gauge. I have yet to argue with the Feds for not having a system (typically cable or...
  3. JeanAlesi

    Hot CHT's, bonding AL to Cylinder for improved flow

    Thanks for your responses guys. I am not redirecting the flow away from the cowling fins, but rather preventing it from escaping to the lower compartment (bottom cowling area). The fuel flow requirements are set properly per our flight tests. I did manage to design a bracket that I will support...
  4. JeanAlesi

    Composite Structures certification requirements

    Design/certification Considerations in Composite Aircraft Structure Joseph R. Soderquist National Resource Specialist, AIR-103
  5. JeanAlesi

    Hot CHT's, bonding AL to Cylinder for improved flow

    We are testing a turbo normalized system on a TCM IO-550 engine. At 25,000 FT, the converted CHT and OIL Temps. per FAR 23 are above the redline. We have enlarged the inlet and cowl flap areas and it did improve the temps., but did not lower them to a desirable value. Instead of re-enlarging the...
  6. JeanAlesi

    Hot CHT's, bonding AL to Cylinder for improved flow

    We are testing a turbo normalized system on a TCM IO-550 engine. At 25,000 FT, the converted CHT and OIL Temps. per FAR 23 are above the redline. We have enlarged the inlet and cowl flap areas and it did improve the temps., but did not lower them to a desirable value. Instead of re-enlarging the...
  7. JeanAlesi

    Bellmouth design

    What is a bellmouth?
  8. JeanAlesi

    What is creating the downwash on a wing?!

    Just to add to this, the primary purpose of winglets is reducing the 3D effects of a finite wings (downwsh).
  9. JeanAlesi

    Heat Exchanger Sizing

    Agreed, thanks to all for the answers.
  10. JeanAlesi

    Heat Exchanger Sizing

    Thank you pardal, could you please explain what you meant by "water could be hard".?
  11. JeanAlesi

    Heat Exchanger Sizing

    I appoligize if this sounds a little immature or off topic, but can someone identify some of the very basic pros and cons of cooling air using above method over using intercoolers (air instead of waters)?
  12. JeanAlesi

    aerodynamic shape VS jet intake vacuum

    Pictures and details would certainly help. Let me know when you have them posted or can email them. Interesting project.
  13. JeanAlesi

    Sweep on Vertical Stabiliser

    I agree with I278 about the aesthetics of sweeping the tail. However, I strongly disagree that tapering wings are "just for looks". Wing tapering have a huge impact on the core aerodynamics, especially on the 3D effects and mean aerodynamic chord. I wont go as far as saying tapering is...
  14. JeanAlesi

    Aircraft Fatigue and Creep

    Generally, I don't think control cables fatigue or creep. If any cable will creep, it will most like be engine control cables running close to the exhaust system. The maintenance manual calls out lubricating the cable when the input required exceeds a certain amount. My experience tells me that...
  15. JeanAlesi

    centre of gravity of an aircraft with three lifting surfaces

    I think it highly depends on the amount of lift provided by each surface. I think the above answer should be a good place to start (Stability Equations).
  16. JeanAlesi

    SIP

    I am not 100% sure on this one, but it seems to me that what you are refering to is: AC 43.13-1B ACCEPTABLE METHODS, TECHNIQUES, AND PRACTICES-AIRCRAFT INSPECTION AND REPAIR (09-08-98) You can download the AC from this link: http://av-info.faa.gov/dst/ACreference/030-049.htm Good luck.
  17. JeanAlesi

    Fuel System for Light 4 seater

    I think your best bet is to start with an IPC (Illustrated Parts Catalog) of something like 172/182. Even a low wing one should be quite helpful, like a mooney or something. The difference between a high/low wing is not a major one. The engine operating handbook should also specify the fuel...
  18. JeanAlesi

    Fuel System for Light 4 seater

    I think your best bet is to start with an IPC (Illustrated Parts Catalog) of something like 172/182. Even a low wing one should be quite helpful, like a mooney or something. The difference between a high/low wing is not a major one. The engine operating handbook should also specify the fuel...

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