Extended baggage compartment

[piperpainter]

Got pre approved and it's now completed as we didn't want to do a bunch of stuff and not get approved. Paperwork is all done. New weight and balance is done with 1005lbs useful. Lost weight cause I also had to remove my step. Pretty excited!

[MB65E]

Anybody ever see it done On an E model?? I haven't looked where the battery interference would be. Looks really nice!

-Matt

[piperpainter]

Go open that panel and see what all you have back there! My battery is located in the engine area so I don't have to worry about that stuff! 

[aviatoreb]

Got pre approved and it's now completed as we didn't want to do a bunch of stuff and not get approved. Paperwork is all done. New weight and balance is done with 1005lbs useful. Lost weight cause I also had to remove my step. Pretty excited!

 

Wow - how did you do that so fast?  I would love to see the 337 for that - since I might want to copy.  Can you describe the project, how much it cost you, what you used for materials, how much time it took, etc?

 

Oh - and what is the arm on that new station as compared to the station for the normal baggage?  I am guessing it is the same arm as the hat rack.

[carusoam]

Now the co pilot has room for his 10-gal hat!

How long are X-country ski?

Many of the things that extend that far back may have their individual cg further forward in the baggage compartment.

Real W&B calculations can be critical,

-a-

[aviatoreb]

Now the co pilot has room for his 10-gal hat!

How long are X-country ski?

Many of the things that extend that far back may have their individual cg further forward in the baggage compartment.

Real W&B calculations can be critical,

-a-

 

XC skis weigh almost nothing.  Likewise the carbon fiber poles weight almost nothing.  I use performance (racing) style XC ski equipment, both classic and skate style and each has their own poles, boots and skis.  Being 6'4'' my skis are generally 202-207cm range and my poles are either up to my chin (classic) or up to my nose (skate) - I forgot the length on those at the moment, but those poles are something like 175cm.  I bet a pair of poles weigh like 1/4 or 1/2lb?  And skis are maybe 2 lbs?  So they are long and unwieldy needing lots of space, but essentially nothing regarding W&B.  So since with the skis I guess it would only be possible to carry only two people.

 

That said, if I were to compute weight and balance of the skis, I would use their weight and the mid point of the skis which I bet lies roughly at the passenger seat's datum plane.

[aviatoreb]

Got pre approved and it's now completed as we didn't want to do a bunch of stuff and not get approved. Paperwork is all done. New weight and balance is done with 1005lbs useful. Lost weight cause I also had to remove my step. Pretty excited!

 

Still wishing for more details.

[PTK]

I wonder how this would work with the J as far as avionics and battery?

[jetdriven]

That's quite a project. Was it done as a conversion to experimental category?

Actually, with the same engine but shorter clipped wings than an ovation, I would have guessed that such a Mooney mod would have been faster than an ovation.

Aerodynamically speaking, the clipped wing may have less drag than the long wing but since the wing loading goes up for a given weight , the AOA and body angle at cruise may also be a little higher. Which increases drag, and may cancel out all the benefits of the clipped wing. But you still have the higher stall speed. So it's a net loss.

Which is why winglets make sense for a few planes such as the C421C, the 737NG, and 767. These airplanes can have a higher than optimum wing loading so the effective span increase of the winglets allow a lower AOA in cruise or a higher cruise altitude for the same AOA. A clipped wing in reverse.

[aviatoreb]

Aerodynamically speaking, the clipped wing may have less drag than the long wing but since the wing loading goes up for a given weight , the AOA and body angle at cruise may also be a little higher. Which increases drag, and may cancel out all the benefits of the clipped wing. But you still have the higher stall speed. So it's a net loss.

Which is why winglets make sense for a few planes such as the C421C, the 737NG, and 767. These airplanes can have a higher than optimum wing loading so the effective span increase of the winglets allow a lower AOA in cruise or a higher cruise altitude for the same AOA. A clipped wing in reverse.

 

Beautiful - I never understood that so well as you just explained the give and take of that.

[piperpainter]

Okay I had a whole thing written out and it got jacked up. Sorry you'll have to wait a bit longer....here are a couple points

 

22" deep

19" tall

29" wide 

Limited to 40 lbs of weight per Mooney (the rack was limited to 40lbs...we just made a floor out of the rack and added a little between the main floor and racks to remove a gap)

 

337 ....May not be able to give this out free. I spent $$$ to get this done and paid Lasar $40 alone to get paperwork that really didn't help a lot. Please don't hate me for this, I haven't decided yet or if I can....less than $10 if I did.... along with pictures. 

 

work....30 man hours. I worked with my mechanic very closely to get this done. 

 

Made new partition at station 125. 

 

removed step ---minor modification as it was optional for Mooney's  and is so put in the logbook

 

does anyone need a step and suction?

 

Okay i'll try to get to the details soon but I've been doing some other stuff and getting ready to move back to WA! 

 

 

[1964-M20E]

That's a first for me.

I bet W&B becomes a lot more important back there.

Best regards,

-a-

Just out of curiosity I ran some scenarios on my W&B spread sheet using the hat rack moment for the extra baggage compartment.  I loaded it pretty good and as long as you have 2 adults in the front seats and remain at or under gross weight it is hard to get the CG too far aft even loading the aft compartment and hat rack to 120lbs with 100lbs in regular compartment and the pilot and passenger in position 3 for the front seats.  If they move the seats to the middle positions the CG works even better.

 

When the pilot is by himself and loading the rear seats and extra baggage compartments the CG can go aft pretty quick and fuel burn will get you with an aft CG if you are not careful and it is hard to go to max load.

 

 

All starting with full fuel 64 gallons and not accounting for moving the battery further back.

[aviatoreb]

Who's got the STC for a ski tube?

[piperpainter]

my empty CG is 45.54 so you'd need to start with that number. If you're using F numbers that might also change things!