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
    Name or NavList Code:
    Email:
       
    Reply
    Re: Two body Sandwich Fix Proforma
    From: Gary LaPook
    Date: 2014 Nov 15, 23:14 -0800
    The 7 observations only eliminate the MOO and MOB corrections but all the rest must still be applied so I wonder why this procedure was used?

    gl


    From: Gary LaPook <NoReply_LaPook@fer3.com>
    To: garylapook@pacbell.net
    Sent: Saturday, November 15, 2014 10:46 PM
    Subject: [NavList] Re: Two body Sandwich Fix Proforma

    Now that I understand what is going on with the "sandwich fix" I have to ask the question, "why?" It looks like a lot of work, what was the payoff? Was it thought to be more accurate than the standard three body fix which had the standard MOO, MOB, Coriolis, rhumb line, wander and groundpeed  corrections applied?

    gl




    From: David Pike <NoReply_DavidPike@fer3.com>
    To: garylapook---.net
    Sent: Saturday, November 15, 2014 6:41 AM
    Subject: [NavList] Two body Sandwich Fix Proforma

     
    Attached is an RAF two body sandwich fix proforma at 276KB (larger available).  Clearly not every box had to be filled in for every body.  I’m still trying to work out why we used IAS change and not TAS change.  Perhaps the 6 in the ‘Sum’ column allowed for it.  At high level Mach .84 always seemed to be 480kts TAS and 240kts IAS. When I get time, and after I find my Mear’s slide, I’ll fill one in with fictitious values if I can remember what all the boxes were for.  On the reverse was a three body sandwich fix proforma. That must have been really complicated.  Dave
     


    Attached File:

    (Sandwich-Fix-Form-276KB.JPG: Open and save)





       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

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

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

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

    Email Settings

    NavList ID 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