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Mooney performance charts in XL


patrickf
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Update 16th June 2022

Guys, a quick edit to add links to some new sheets for the M20U and the M20K as well as App links for all.

Our good German friends at OpenAsApp have been knd enough to give me a professional subscription so I have access to more published Apps. I'm not sure how long it will last after the year but I'll publish these while it does.

Update 14th March 2022

Guys, a message from someone on this forum chasing an open copy of my XL sheet has prompted me to issue new versions for M20R, M20R with 310HP STC and M20J which I completed about a year back.

I was hoping to add more models but hit a snag with our German OpenAsApp friends changing their model so that I could now only publish 1 App on the free membership. I have been pushing for them to reconsider but without luck. Luckily I still have access to the 3 I'd already published so can cheat a bit and reuse them.
I do hope to do more models and if I do I will add here.
Links to the tools:
 

M20J    XL   https://bit.ly/M20J_XLS
            App   https://bit.ly/M20J_OasA  

M20K    XL   https://bit.ly/M20K_XLS_Pub
             App   https://bit.ly/M20K_OasA

M20R    XL   https://bit.ly/M20R_XLS
             App   https://bit.ly/M20R_OasA

M20R310    XL   https://bit.ly/M20R310_XLS
                  App   https://bit.ly/M20R310_OasA  

M20U    XL   https://bit.ly/M20U_XLS
             App   https://bit.ly/M20U_OasA

 

I am using bitly links so I can keep track of what is happening and easily update in future.
Depending on how your system is set up the link will take you to the location in your browser. You can then use the Open button to open in excel, or may have to use the Dropbox options (little arrow top left) to go back to Public folder and download from there.
If you do use the App version I would suggest that you also download the associated XL sheet so you understand the source data for details and limitations.

Quick Usage guide XL sheet
Quick Video on how to use spreadsheet:   https://bit.ly/XL_howto
Base Information - Update the base information sheet to match numbers for your aircraft. Save a base copy.
W&B - fill info into green cells. Weights and fuel load are carried forward to other sheets but can be changed on those sheets.
Work sheet_takeoff - Fill in new weight if you need to, and remaining values in green cells
Takeoff Table - use to generate a takeoff table. Read the instructions on the page. If you need to reformat copy the resulting table to word or similar and paste as a table then format.
Work sheet_landing - similar to takeoff but you will probably want to change the weight to your expected landing weight.
Landing Table - similar to Takeoff table
Speed Range Endurance - limited depending on model. M20R is fairly comprehensive, even if of limited use. 
 
OpenAsApp
Great software and very responsive team that have taken on a number of my suggestions.
Currently a dead option as the latest pricing has limited free published Apps to 1, and the first tier of paid access is around $90 a month ! I am still pursuing.
 
The first time you click the link it will ask you to install the OpenAsApp app. Then it should give you an option to open the sheet. Let me know your thoughts and any bugs. Works well for those quick “how much fuel can I load “ calcs as well as landing/take off distances. Fits on my iphone SE screen so should be better on larger ones.
 
Once you have input your own values including BEW and arm use the menu accessed from the top right to save for future. 
You'll want to change the BEW - ours has AC and Oxy!
All sheets take values from the loading on the W&B page unless you input an alternative fuel load, or weight.
Apologies but you guys will still have to input load weights in metric. 
If you are running ROP input values into the LOP page - they are carried to the ROP page.
 
As before happy for any suggestions, or bugs. For the app any changes I make are "pushed". 

THE LONG VERSION (boring bits)
History
I originally did this as a labour of love to allow easier use of POH charts. Owning the plane made the effort worthwhile.
The spreadsheet was built "organically" so some of the calculations and methods are a bit quirky.

Purpose
The tools are specifically NOT to replace any of the clever Apps out there - just to allow easier use of the original POH data.

How I use it:
I use the app version for our plane (M20R VH OVH) to check weight and balance, particularly for "full fuel load" if I'm on a long trip. Also handy when you are filling a US gallons plane with liters here in Aus. I use the landing performance page mainly to double check my approach ref speed for the weight and  I'll also double check the take off and landing performance and distances if I'm heading somewhere I don't know well, or I know is "tight".
 
Development update (for the geeks)
I now use tables for power settings rather than the generated formulas I used before. The Table is in a hidden sheet: "Z_Power Table ..."
Newer versions of the XL sheet don't include detailed performance charts as they have limited use and are a pain to generate.
In any case if you are like me you get a couple of settings from the book, rework them for real life and rarely go back to the book except if you need a particular setting for a different profile. The older model POHs have tables which are easier to look up if you are really keen.
I did the exercise originally for the M20R just to see if it could be done and I very occasionally have a play around with power settings and range - mainly to remind myself why we bought a Mooney, and how much further it can fly past where I need the loo!
 
Addition of generated tables for landing/takeoff - thanks to a suggestion from @midlifeflyer I have added tables for takeoff/landing as well as the original charts.
Tables have been left as unprotected sheets or they won't work so take care not to corrupt, or take a copy before you do. The tables are set up as a pivot tables with some tricky data table generation as the source. If you want to reformat the look just highlight and copy & paste to a blank worksheet or other document once you have the info you want.
 
I am now developing all the XL sheets off a common base to save time and reduce errors. It also makes Apps for new models and the updates to the Apps much easier as the same value always hits the same cell across the models. One of the side effects of this is that the newer sheets aren't as "pretty" as the original. In some cases there are unused cells etc. 
 
Note the errors made using the graphical method in some of the Mooney base examples - they had fat fingers as well!
 
My graphics are for confirmation only. Values are calculated off formulas digitised from the original chart. Some error but very minimal.

(for the real geeks)
Workings are in hidden cells generally to the RHS of displayed info, or in hidden sheets.
To unprotect sheets - Password YCAB  (our home strip)
  
M20J notes
Have spot checked against POH 1221 - ISSUED 11-15-77 which has tables rather than charts for TO and LNG at max weight. Values align reasonably well but table values generally LESS conservative for 50 foot distances. You can use the Table sheets in the XL to generate a table equivalent to the one in the old POHs but including varying weights.  Have changed the MP value in the power table for 8000/75%/2700 as the value in the published table appears to be an error. (highlighted)

Disclaimer
I have added POH details and variant as a check against source data
These are tools for info only. No liability accepted.
I enjoy this but it takes time. Support is very little and sporadic!
 
Thanks to all the members who have provide feedback via the forums and PMs. Special thanks to @Deb and DaveD who did a heap of QA on th XL and App versions.

 

Posted October 13, 2018

I've uploaded this in  case anyone else wants to use them. Think they are good for all the M20Rs
I generally use an EFB on the Ipad for planning but occasionally go back to the POH for a check, or on review flights when I hit an instructor who insists on "old school". I also find the electronic ones I use don't handle take off and landing distances well either and for longer flights I like to print out all the calcs to cover me legally. I've always found this form of chart a pain by hand.
I've been meaning to do this for a while but recently becoming a part owner in a GX2 Ovation meant the effort was worthwhile. 
Let me know if you find any bugs - I'm sure there's still a couple. If you want to see the calcs behind the numbers unhide the columns to the RHS of the charts. In all cases I've plotted on the POH charts as a cross check. The password is the home of our plane "YCAB" - Caboolture, Australia.

PatrickF

>>>>>>>>>>>>>>>>>>>>>>>>>

Guys have had a couple,of people download the old version. Refer my next post below for updated and App. Next time I’ll do it right and modify this one. 

Edited by patrickf
New info
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Thanks guys,

hear you on the ios App - me too!

I haven't coded in ios but know a few who do so will have a look. With the maths done coding to get the numbers would be trivial for someone who knew what they were doing - look and feel, graphs and pretty pictures are a bit harder I'm sure.

Must be an Ovation driver over there somewhere who made their $ writing Apps ?

 

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I have a version of Excel on my iPad.  I will try this.  EXCELLENT WORK! I am especially appreciative of the overlay on the POH pages.  Since the FAAs position is that a digital representation of paper documentation is now legal, you may have a means to have an "approved" calculator display.  Especially handy since I may be starting to fly an Ovation this weekend.  Now if only there was a version for my F.  :(

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Guys, 
I’ve made a couple of minor updates to the XL sheet - fixed an error in the off chart ROP MP calc and added QNH in inches for you guys on that side of the big pond.
I have been looking at the easiest way to get the info onto a mobile device in a usable form. 
It was going to take a long time to write, or have written, a native app but I’ve found a clever site from our German friends that allows you to port an XL sheet as an app “wrapped” in their App. Try this link.

 https://oaa.app.link/Wbv8GfTJ6Q

Should work. Haven’t checked but understand it works on Android as well. 
The first time you click it will ask you to install the OpenAsApp app. Then it should give you an option to open the sheet. Let me know your thoughts and any bugs. Should work well for those quick “how much fuel can I load “ calcs as well as landing/take off distances. Fits on my iphone SE screen so should be better on larger ones. Sorry no charts.
 
Once you have input your own values including BEW and arm use the menu accessed from the top right to save for future. 
You'll want to change the BEW - ours has AC and Oxy!
All sheets take values from the loading on the W&B page unless you input an alternative fuel load, or weight.
Apologies but you guys will still have to input load weights in metric. Might do an imperial version if enough are keen.
If you are running ROP input values into the LOP page - they are carried to the ROP page.
 
As before happy for any suggestions, or bugs. For the app any changes I make are "pushed".
 
Happy to cut a version for other aircraft now that I have it set up - just need some clean charts, and some time.
PatrickF

IMG_5477.PNG

M20R_WandB_PerformanceCharts_rev2.2.xlsx

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4 hours ago, patrickf said:
Guys, 
I’ve made a couple of minor updates to the XL sheet - fixed an error in the off chart ROP MP calc and added QNH in inches for you guys on that side of the big pond.
I have been looking at the easiest way to get the info onto a mobile device in a usable form. 
It was going to take a long time to write, or have written, a native app but I’ve found a clever site from our German friends that allows you to port an XL sheet as an app “wrapped” in their App. Try this link.

 https://oaa.app.link/Wbv8GfTJ6Q

Should work. Haven’t checked but understand it works on Android as well. 
The first time you click it will ask you to install the OpenAsApp app. Then it should give you an option to open the sheet. Let me know your thoughts and any bugs. Should work well for those quick “how much fuel can I load “ calcs as well as landing/take off distances. Fits on my iphone SE screen so should be better on larger ones. Sorry no charts.
 
Once you have input your own values including BEW and arm use the menu accessed from the top right to save for future. 
You'll want to change the BEW - ours has AC and Oxy!
All sheets take values from the loading on the W&B page unless you input an alternative fuel load, or weight.
Apologies but you guys will still have to input load weights in metric. Might do an imperial version if enough are keen.
If you are running ROP input values into the LOP page - they are carried to the ROP page.
 
As before happy for any suggestions, or bugs. For the app any changes I make are "pushed".
 
Happy to cut a version for other aircraft now that I have it set up - just need some clean charts, and some time.
PatrickF

IMG_5477.PNG

M20R_WandB_PerformanceCharts_rev2.2.xlsx

That’s awesome! Thanks again.

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This is an amazing way to turn your ordinary spreadsheet into a useable app.

Back in the day , I had spreadsheets for everything... and a PC that would die before landing... or fall somewhere... or take up too much room...

Then the apps started...

I have reviewed Patrick’s work and look forward to doing some testing...

First update would be to add some HP in the perf. Numbers...  310hp STC...

Best regards,

-a-

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17 hours ago, patrickf said:
Guys, 
I’ve made a couple of minor updates to the XL sheet - fixed an error in the off chart ROP MP calc and added QNH in inches for you guys on that side of the big pond.
I have been looking at the easiest way to get the info onto a mobile device in a usable form. 
It was going to take a long time to write, or have written, a native app but I’ve found a clever site from our German friends that allows you to port an XL sheet as an app “wrapped” in their App. Try this link.

 https://oaa.app.link/Wbv8GfTJ6Q

Should work. Haven’t checked but understand it works on Android as well. 
The first time you click it will ask you to install the OpenAsApp app. Then it should give you an option to open the sheet. Let me know your thoughts and any bugs. Should work well for those quick “how much fuel can I load “ calcs as well as landing/take off distances. Fits on my iphone SE screen so should be better on larger ones. Sorry no charts.
 
Once you have input your own values including BEW and arm use the menu accessed from the top right to save for future. 
You'll want to change the BEW - ours has AC and Oxy!
All sheets take values from the loading on the W&B page unless you input an alternative fuel load, or weight.
Apologies but you guys will still have to input load weights in metric. Might do an imperial version if enough are keen.
If you are running ROP input values into the LOP page - they are carried to the ROP page.
 
As before happy for any suggestions, or bugs. For the app any changes I make are "pushed".
 
Happy to cut a version for other aircraft now that I have it set up - just need some clean charts, and some time.
PatrickF

IMG_5477.PNG

M20R_WandB_PerformanceCharts_rev2.2.xlsx

Thanks Patrick! I am sure you have even thought of the new minimum fuel levels that CASA is effecting in Feb! Great work

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On 10/20/2018 at 2:44 AM, mike_elliott said:

Thanks Patrick! I am sure you have even thought of the new minimum fuel levels that CASA is effecting in Feb! Great work

Mike, Saw that one drop on Friday. I think I'll leave that one for the OzRunways boys!

You have prompted me to add a disclaimer.

I've done the spreadsheet as a way to go back to the POH for a cross check, or the app to do those quick checks. 

The EFB guys do a great job of the detail planning.

Look forward to catching up next weekend. Have a good flight over.

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Mike, Saw that one drop on Friday. I think I'll leave that one for the OzRunways boys!
You have prompted me to add a disclaimer.
I've done the spreadsheet as a way to go back to the POH for a cross check, or the app to do those quick checks. 
The EFB guys do a great job of the detail planning.
Look forward to catching up next weekend. Have a good flight over.
It will be a fantastic learning event for me and the wonderful people of AMPA. Patrick, thanks for your valuable contribution to 'better the breed'
Mike

Sent from my Pixel 2 XL using Tapatalk

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Patrick,

Good stuff! Thank you.

Is there a way to change some of the core info? E.g., I don't think many Ovations do LOP cruise at 181kt which is what it currently shows (mine does 175kt at 13.5 gph). But I can't find a way to change that in the app.

Robert

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Robert, agree - ours doesn’t either !

The aim of my sheet was to make pulling numbers from the POH charts easier to do if you need to and  as a cross check. 

The app does the same thing.

Perhaps if I add a % adjustment to the book number that you can leave set, or change ( like I have in the take off/ landing distances)

Suggestions welcome. 

Sorry for the delay -we have our PSP program this weekend in Bathurst NSW. I was doing my homework. 

Regards 

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Robert,

It is pretty straight forward...the ship’s gauge has its own TC specifically for the purpose of leaning ROP...

The digital engine monitor is best for leaning at peak and LOP, because you want to make sure every cylinder is on the LOP side... °F LOP is calculated based on the last cylinder to peak...

When leaning into the blue box...

Lean to the top of the box, and scan the EGT while you climb, the needle will be falling as the air gets thinner...

As the needle gets to the bottom of the blue box, lean again to the top.

IIRC, the box is 100°F from top to bottom. So the engine will be running 2-300°F ROP...

This far ROP, there isn’t much precision required.

Using the seventh TC... It is mounted in the confluence of three exhaust streams and should be reading a bit hotter than the other EGTs.  A similar effect that TIT gauges have...

Some G1000 screens use a white box for the graphic, and have an erroneous name tag for the EGT... it is called a TIT on an NA application...  Fuzzy MS generated memory...

There is some guidance for climbing LOP...

But, the risks start to build up... maintaining climb rate and EGT at a very busy time... the HP falls off rapidly the deeper LOP you go...

When climbing out at 1500+fpm you are going to see the needle has moved unless your scan rate keeps up...

Fortunately, if the EGT needle moves without you... it is moving further from the red box... safely.

Always be watching CHTs, no matter which leaning method you use...

PP thoughts only, not a mechanic or CFI...

Let me know if I missed something...

Best regards,

-a-

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  • patrickf changed the title to Mooney performance charts in XL

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