Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: Circular "Navigational Computer"
    From: Robert Criss
    Date: 2015 Dec 24, 09:46 -0800

    Navy LT Philip Dalton developed early versions of the E6B. I believe one of his wind computers had a similar scale. I know American Airlines used a similar wind scale in the early 1940s and issued them to their pilots. I have a couple of those. They are not easy to understand but work. American Airlines CB Bassett worked with Jeppesen to develop the CB-1. I think that American and some other airlines purchased them for their pilots. I have a Jeppesen CB-1 instruction manual that explains the operation, but cannot find a CB-1 computer for sale. The simpler scale on the CR solves the triangle trigonometrically. Because it was simpler and easier to use it probably stopped the sale of the CB-1. That is all I know just wish I could find a CB-1 in good working condition.

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site