Thursday, December 30, 2021

Why electric aircraft face such a tough haul: Joby edition

Here is an interesting video from AvWeb. A big part of it is a particular company's desire to create a network of eVTOL aircraft undertaking air taxi operations, but there are also some good comments on where electric aircraft are at right now.

tldr; They are not there yet.


Thursday, December 23, 2021

More Nanchanging today

Having hardly flown the Nanchang CJ6A for the last four months, it was time for a dual check. Today's flights consisted of a flight from Wellington to Masterton and some circuits, followed by a refuel and solo circuits, followed by a dual ride back to Wellington.

Fun times, but stinking hot in Masterton! Almost 28 deg celsius when we were there this arvo. Thankfully Wellington was a nice 20 deg with a cooling breeze when we got back.

Fun times, now for Christmas, then some more flying before I head back to work in a couple of weeks.

Nanchang CJ6A, ZK-MAO, operated by Wellington Aero Club

Tuesday, December 21, 2021

Merry Christmas everyone!

I hope you have a safe, restful and fun Christmas. See you all in the new year!

This image is from one of my 2021 trips up the Desert Road towards Taupo. Image may have been altered slightly 😁 As always, click on the image for a bigger version.

Tuesday, December 14, 2021

100% synthetic fuel and the RAF

This is an interesting video from 3-4 weeks ago. The Royal Air Force trialling a 100% synthetic fuel in a light aircraft, made with 100% renewable energy.

Clearly it will be a way off yet - the cost of the fuel and the ability to scale up production [which are related of course] mean it's not coming to a fuel pump any time soon. Still, a 100% synthetic drop in replacement for avgas would be good.

Also, with something so bleeding edge, there's bound to be more than a little hype in the video, but the ability to provide the Royal Air Force with 100% synthetic fuel for ALL its aircraft is certainly worth aiming for. Of course if that happens, I'd expect the fuel would be widely available by then. Exciting times!

Anyway, here is the video. Enjoy!

Thursday, December 09, 2021

Should parachutes spin?

Here is an interesting video I found on spinning parachutes, auto-rotating rotor blades and more.

Basically, it's a comparison between descent rates of simple parachutes, ones that rotate during descent and rotating blades as a replacement for parachutes.

It's interesting enough as a video, but there are also brief mentions of lift and drag for those that get excited but that 👍


Tuesday, December 07, 2021

Don't try this at home... 😬

It's almost Christmas, so it is time for a present of some Bob Hoover aerobatics!

Please don't try this at home... or the local aero club.... or other flight school... 😬 


I am hoping to have some more of my own flying adventures to comment on soon - just need the weather to improve so I can get my BFR done.

Thursday, December 02, 2021

Pipistrel Virus. Not, not THAT virus...!

Yes, I know, what a name! Pronounced differently of course, but yeah, still comes across as odd 😁

I was watching a video from Mojogrip [included below], who does a bit of an introduction to the aircraft, but the short version for the 100hp fuel injected version is around 147 knots at 15.5 litres per hour. Some say [social media commentary, so maybe unreliable] that real-world performance may actually be about 130knots at 19 litres per hour.

With those more conservative figures, it would be an impressive 643nm before it goes very quiet.😬 That would be around 12 litres per 100km. When you consider that aircraft can often maintain straight lines more easily than cars and don't have to slow down for road works, it is probably as efficient as most cars out there, excluding battery only models like the Teslas. Very impressive.

I'm still not sure how it would handle the turbulence we get in much of NZ around the mountains [probably not great], and an approach speed of around 55 knots will not be ideal in some situations, but the performance is still very impressive!

Anyway, click here for the specs on the official Pipistrel site if you are interested and here is the video from Mojogrip.

The video is from 2019, but it appears to match the Pipistrel website's specs.