Tuesday, January 17, 2017

Weight and Balance

I haven't flown the Super Cub for a few weeks now. I'm just waiting for better weather on a weekend to be able to head out and complete the type rating.

In preparation for this I have been trying to understand the weight and balance calculations for the aircraft. While I don't think I have all the details [looks like I might have missed copying some relevant pages out of the AFM], it is still weird*.

Get this:

  • The AFM MCTOW is stated as 1750 lbs.
  • BEW C of G position is in meters aft of the leading edge of the wing.
  • BEW moment is in kg.meters.
  • All other weights are in lbs, and measures in quarts [oil] and litres and/ or US gallons [fuel], both needing to be converted to lbs.
  • All other moments are aft of a point 60 inches ahead of the leading edge of the wing and measured in inch lbs [or some other weird imperial measurement*].
Needless to say, weight and balance calculations are a bit of fun! I think I have done the weight conversions [to imperial measurements] correctly and I'm sure I've allowed for the different datam points correctly [added 60" to the BEW C of G moment after conversion to inches and deducted 60" from the resultant position].

I still think I have something wrong. Although I have spent a lot of time on this already, I'll spend a bit more time and try to work out why my resultant C of G position looks more forward than expected. I suspect I've stuffed up the BEW C of G position somehow.

Part of the Spreadsheet of Doom!

Hopefully I don't need to remind you all to not use this spreadsheet in anger... it's incomplete and looks like it has errors in it.



* you would need to be really old and a little backward, or American, or just a little weird [and probably a mixture], to comprehend lbs, foot lbs, inches, quarts and US gallons. All that is important is that the units are the same. Long live the metric system!

Saturday, January 14, 2017

RNZAF C130H Hercules

Just one photo today - An RNZAF-operated Lockheed C130H Hercules, NZ7004.

Lockheed C130H, NZ7004, operated by the RNZAF

Monday, January 09, 2017

Circuits at Wellington

Last weekend I had the opportunity to go along as a passenger for a few circuits with Chris and to set up the camera. After searching [almost] everywhere else, I finally found a GoPro mount on the ceiling :-), so I put it up there. The aircraft is a Piper PA28-161, ZK-MBG.

Here are a couple of the circuits. I've sped up the boring less interesting bits to show the takeoffs and landings.



I'm hoping that I'll be able to do something like this in the Super Cub in a week or three. Also, I've found the Club's C172 has the same mount, so when the mags in that aircraft are repaired, I might get a video in there also.

Saturday, January 07, 2017

Pencarrow Arrival into Wellington

Here is a brief video of a Pencarrow Arrival into Wellington, starting just east of Turakirae Head and landing on runway 34.

It was rather breezy, a northerly and I was south of the terrain... hence the bouncing around.

Tuesday, January 03, 2017

Monday's Singapore Airlines arrival

Here's the Singapore Airlines arrival on Monday. This aircraft is a Boeing 777-212/ER, 9V-SQL.

Boeing 777-212/ER, 9V-SQL, operated by Singapore Airlines

Monday, January 02, 2017

Piper PA28-140

Another visitor seen at wellington last Monday is the Piper PA28-140, ZK-ECY. This aircraft is registered to an Ohaupo address. From what I understand it has been upgraded to 160hp [instead of the original 140hp engine].

Piper PA28-140, ZK-ECY

Mitsubishi MU2B-60 Air Ambulance

Today's interesting visitor was the recently arrived Mitsubishi MU2B-60, ZK-PSR.

This aircrat is operated by Search and Rescue Services of a Taupo address and has been registered to them since import in June 2016.

Mitsubishi MU2B-60, ZK-PSR, operated by Search and Rescue Services

Sunday, January 01, 2017

Gliding in the Isle of Man

I'm heading this way sometime later this year. This gliding thing looks like a lot of fun, and reasonably priced. Maybe I'll give it a go.


The club is the Andreas Gliding Club.

Windy New Year

It's warm enough, but as I write this, it is a little damp, rather grey and gloomy and the winds are gusting up around 100km/hr. In the middle of summer. Fun times!

There's obviously not going to be any flying for me, but after a quick trip to the airport, I have a photo which shows the scene quite well..

The aircraft is a Jetstar A320-232, VH-VGU arriving. Did I mention grey and gloomy?

Airbus A320-232, VH-VGU, operated by Jetstar Airways

Prior to this A320, FlightRadar24.com showed a DHC8 at about 1500' with a groundspeed of only 69 knots! The groundspeed did increase as it got closer to the ground [which you'd expect with the wind decreasing closer to the ground...], but still...

Friday, December 23, 2016

Merry Christmas!

Merry Christmas from Rodney's Aviation Ramblings!



Things might be a little slow for a few days, but I'll be back to normal in the new year. I'm hoping for some exciting inflight videos in addition to the pictures!

Thanks for your continued support and encouragement!

Sunday, December 18, 2016

Maule M-9-235

This post is simply a picture of a Maule M-9-235, ZK-VRF, which is in the WAC hanger.

What a nice plane!

Maule M-9-235, ZK-VRF, operated by Capital Aviation

Saturday, December 17, 2016

Eastbourne Arrival via Mount Matthews

This is an accidental video which very nearly didn't happen!

I was flying the Aero Club's Cessna C172N, ZK-FLT. I didn't take my suction mount with me, and the aircraft had no solid place on the dashboard to mount the GoPro which would also hold the Blutack to hold the whole thing steady...

Anyway, after a trip to Paraparaumu and then to the Southern Wairarapa, I decided to see if I could just make it work. It sorta did work, although it's not great. Rather wobble and some weird artefact at around 21 seconds...

The video itself is of the return the Wellington. The flight starts be going past Mount Matthews on the Rimutaka Range, then on to the Eastbourne Arrival procedure to Wellington. Don't look too hard at the landing... it was a wee bit rubbish!

Sunday, December 11, 2016

Flight to Paraparaumu and back

Today's flight was from Wellington [NZWN] to Paraparaumu [NZPP] and back, with 3 circuits at NZPP. The main reason was to get current in the Piper PA38-112 Tomahawk. It was also an excuse to try out my new GoPro Hero 5 Session camera.

The video isn't great - despite how it looks, the camera was attached firmly [using Blutack no less!] to the dashboard - next time I'll leave the camera's software image stabilisation off.

The weather was a little worse for my return, although perhaps not quite as bad as it looks here...

Sunday, December 04, 2016

Another day of Super Cubbing

Just one boring photo :-) today after a couple of fun flights in Piper PA18A-150 Super Cub, ZK-BKN, up at Whanganui today.

It turns out that Whanganui can be a busy little place with the aero club busy all day, Air Chathams arriving, local helicopters buzzing around, a DH Venom departing and three visitors to Auckland Aero Club coming and going.

Fun times with goodness knows how many circuits flown. I think I'm getting the hang of it :-)

Piper PA18A-150 Super Cub, ZK-BKN

Wednesday, November 30, 2016

Eastern Australia Airlines/ Jetstar departure

Here is another picture from last Wellington Airport last Sunday. This is an Eastern Australia Airlines-operated Bombardier DHC-8-315, VH-SBI, which is operated on behalf of Jetstar Airways,

Bombardier DHC-8-315, VH-SBI, operated by Eastern Australia Airlines on behalf of Jetstar