Search:

Type: Posts; User: wantobe

Page 1 of 3 1 2 3

Search: Search took 0.00 seconds.

  1. Airplanes for sand dune takeoff and landing in desert

    I would like to know if there is any airplane that can routinely take off and land on a sand dune in a desert. I have searched and read about bush airplanes. Bush airplanes are used on water, river...
  2. Icon A5 uses carbon composite control rod. This...

    Icon A5 uses carbon composite control rod. This is what they displayed at AirVenture.3174
  3. Replies
    2
    Views
    5,183

    gust lock for a rudder?

    Most, if not all, airplanes have gust locks for ailerons and elevators. However, quite some of them do not have gust locks for rudders. Is this observation correct? Why is it this way?
  4. While A5 is a beautiful airplane, the investors...

    While A5 is a beautiful airplane, the investors (as a whole) are unlikely to get the money back. The current round of 64M (millions) is round D. Two years ago Icon raised 25M, that should be round C....
  5. Replies
    6
    Views
    6,442

    Did Van's certify RV-12?

    Van's Delivers First Factory-Built RV-12

    http://www.avweb.com/avwebflash/news/Vans_Delivery_RV12_208813-1.html

    The article does not mention anything about certification. Did Van's certify...
  6. Replies
    6
    Views
    5,562

    Pilot's View Requirement

    What is a minimum requirement of pilot's external view forward? I am looking for specific angles when an airplane is on ground, such as 20 degrees up and 10 degrees down. This will affect how high...
  7. Following is the paragraph in Icon's original...

    Following is the paragraph in Icon's original petition explaining the weight increase:

    While it is beyond the scope and intent of this document to fully explain a full FAR Part 23 spin-resistance...
  8. Most of the dicussion have been on the spin...

    Most of the dicussion have been on the spin resistance itself. Let me shelf this question for now and move on: Icon never explained or gave a calculation to show that 250 lb was the weight increase...
  9. Another issue with the spin resistant video is...

    Another issue with the spin resistant video is the rudder authority. The deflection of the rudder as shown in the video is very small. I would guess about 15 degrees. I asked them about crosswind...
  10. In addition to the Primary Category Aircraft...

    In addition to the Primary Category Aircraft which allows weight up to 2700 lb for land planes and 3375 lb for seaplanes, there is also a Very Light Aircraft (VLA) class which allows weight up to...
  11. The depth of this forum always surprises me! ...

    The depth of this forum always surprises me!



    This is kind of a compromise between process and performance. Young's Modulus is what really matters in buckling resistance, yet we can not use...
  12. Bob, I do care about all of these! Thanks! I...

    Bob, I do care about all of these! Thanks!

    I do not think that a contol system has significant impact loads. Anyone has specific number on this?

    I think some considerations are similar to those...
  13. I am an engineer, but not a composite engineer....

    I am an engineer, but not a composite engineer. Your reply is exactly what I need. Many many thanks!


    I have two comments on the above statement. First, control rod usually is limited by...
  14. Thanks for the replies. Very good information. ...

    Thanks for the replies. Very good information.

    I think all carbon structures have the same problem of brittleness. So it is a matter of margin and proper usage. The end fittings are a bit tricky....
  15. Unidirectional Carbon Tube as Control System Rod

    Some long control system rod sizes are limited by Euler column stability which is directly related to the stiffness of the rod. Unidirectional carbon tube is a good fit for this application because...
  16. Replies
    3
    Views
    4,493

    I understand there is no standard. Since I do not...

    I understand there is no standard. Since I do not have access to central stick airplanes, I would like to see some typical values as references.



    The pilot forces are in Part23.143(c) General...
  17. Replies
    3
    Views
    4,493

    travel ranges of central stick

    For a central stick (connected to the floor, between two legs) design, what is its longitudinal (forward-rearward) travel range? What is its lateral (left-right) total travel range? Is the center of...
  18. Replies
    1
    Views
    3,513

    Boeing 787's Lithium Ion Battery

    There are many different kinds of lithium ion batteries. Some manufacturers were trying to sell lithium iron phosphorate battery, the most mild in the family of lithium ion battery yet still...
  19. Replies
    27
    Views
    26,417

    By convention the pitch angle is the angle...

    By convention the pitch angle is the angle between the longitudinal axis of a fuselage and the horizontal plane. Usually a pitch angle is of an airplane, rather than a wing.

    I am interested in the...
  20. Replies
    27
    Views
    26,417

    If you draw a proper diagram, then it is...

    If you draw a proper diagram, then it is self-explanatory. In this diagram, you have the glide path line at a slope of 3 degrees. One end of this line is the numbers on the runway, the other end is...
  21. Replies
    27
    Views
    26,417

    If we aim the landing light further than the taxi...

    If we aim the landing light further than the taxi light, then it will not aim at the numbers during the stable final approach. As an example, Cessna 172's lights are about 3 feet above ground, if we...
  22. Replies
    27
    Views
    26,417

    Wes, are you suggesting to aim the landing light...

    Wes, are you suggesting to aim the landing light 1 degree down relative to the longitudinal axis of the airplane in the above example? I think the current answer is to aim the landing light 5 degree...
  23. Replies
    27
    Views
    26,417

    taxi and landing light focal point distances

    I am calculating the installation angles for a taxi light and a landing light. For that I need to know how far ahead of the vehicle I need to focus these lights. I assume the focal point for the taxi...
  24. Thread: LSA Wreck

    by wantobe
    Replies
    10
    Views
    9,948

    Great site. What other insurance companies are...

    Great site. What other insurance companies are major players in aviation insurance?
  25. Thread: LSA Wreck

    by wantobe
    Replies
    10
    Views
    9,948

    Assume that I get an airplane which is a lump of...

    Assume that I get an airplane which is a lump of carbon fibre wreck, how can I make it free from carbon fibre dust? Wash it with a water gun first, anything else I can do?
Results 1 to 25 of 67
Page 1 of 3 1 2 3