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: Running down an Astro-Position Line
    From: Gary LaPook
    Date: 2021 Mar 16, 02:21 -0700

    In flight navigation you rarely get a celestial fix so you are usually limited to one LOP during the day. So the method is to analyse each LOP as either a "speed line" or a "course line." If the sun is out by your wingtip the resulting LOP will be parallel to your course so the intercept will tell you if you  are on course or how far off course you are and which way to get back on course. A shot ahead tells how far you have come, the distace to go, and, by computation, your actual ground speed. The landfall procedure requires that youi arange to get on to a "course line" LOP to ensure that you find your island. 

    gl

       
    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