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: Two body Sandwich Fix Proforma
    From: David Pike
    Date: 2014 Nov 17, 13:17 -0800

     

    In the message below I sent a copy of the Vulcan Force  seven star sandwich fix proforma, and I stated I couldn’t work out why the change in IAS knots during a one minute shot had to be multiplied by six to give a correction in minutes of arc to a LOP intercept.  Well I think I’ve worked it out.  Please see the snap below.  The proof and no doubt the proforma make two rather large assumptions, first that the astro will be shot around 40,000ft where TAS is very close to twice IAS, and second that any change in TAS is equal to the change in groundspeed.  I’ve not opened a maths textbook for 30 years.  Have I got the maths correct?

     



    File:



       
    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