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-   -   Aircraft with unusual landing gear configurations (https://www.pprune.org/aviation-history-nostalgia/638492-aircraft-unusual-landing-gear-configurations.html)

Beamr 19th Feb 2021 19:12


Originally Posted by PAXboy (Post 10993719)
Antonov A40 used a tank ... or was a tank?

well... if the tank was T60 without the Antonov part, and Antonov was still Antonov even without the T60...

Herod 20th Feb 2021 12:18

I suspect a problem with the power/weight ratio.

Fareastdriver 20th Feb 2021 16:28

When Aerospatial, as it was called then, developed the S330 Puma they had this idea whereas it would be able to conceal itself in a forward location by taxiing into cover. Whirling rotor blades make this quite difficult but if the helicopter could propel itself without the rotor any gap in the trees would do.

So they dreamt up the tracked self propelled undercarriage,

For those that don't know the Puma's system there is a means where one can disconnect No1 engine input from the rotors yet leaving them connected to the No1 alternator and hydraulics. This was the source of energy for the tracked undercarriage.
https://cimg1.ibsrv.net/gimg/pprune....d04f94e7e7.jpg
The procedure would have been: Land and shut down, fold the rotor blades, disengage No1 drive, restart No1 and then taxy the aircraft into its hide. There was a ski on the nosewheel to traverse rough ground.

They never tried to operate it on the aircraft but there was a mobile test rig to assess it. Rumour had it that when it passed the hanger doors on yet another test run somebody would start a stop watch. When the inevitable bang and clouds of smoke materialised in the distance the watch would be stopped; a list of times/names checked and the winner scooped the pool.

pax britanica 21st Feb 2021 17:09

Cheating a little but wasnt there a 1950s jet design -Vampire??? which the famous Eric Brown test flew that didn't have any undercarriage at all and was deigned to be propelled off a ramp and land on a rubberised carpet kind of thing. Carrier Ops??

Terry Dactil 21st Feb 2021 19:44


Originally Posted by pax britanica (Post 10994880)
Cheating a little but wasnt there a 1950s jet design -Vampire??? which the famous Eric Brown test flew that didn't have any undercarriage at all and was deigned to be propelled off a ramp and land on a rubberised carpet kind of thing. Carrier Ops??

See posts #69 & #70
Great idea, but it kinda obstructs the runway after landing. Also there is the problem of taking off again. I don't think this idea was fully thought through.:=

Click Here
(click again in video to run)

DHfan 22nd Feb 2021 09:22

The Vampire and Winkle's already been mentioned - posts 69 and 70 on page 4.

Noyade 17th Mar 2021 06:54

French...


https://cimg8.ibsrv.net/gimg/pprune....659bb23abf.jpg

Self loading bear 17th Mar 2021 13:04

Like a lot of gliders

Asturias56 17th Mar 2021 15:12

or a U2.............

Less Hair 17th Mar 2021 15:55

This will use the wheels for takeoff only, drop them and land on the skid after not too long.


c52 17th Mar 2021 17:32

I used to fly a glider like that - a Kranich II, I think.

Aaaaaaaaaaaaaaaargh! 3rd Apr 2021 21:54

Do I win a prize for the XF- (there you go, I added the hyphen) 85 Goblin?

https://en.wikipedia.org/wiki/McDonn...-85_Goblin.svg

Not so much an undercarriage as it is an overcarriage

asw28-866 3rd Apr 2021 23:40

The reworked BN-3 Nymph prototype, the NAC-1 Freelance had a "ready for anything" U/C configuration...
https://cimg6.ibsrv.net/gimg/pprune....87749ea4f7.jpg
Photo: Adrian Pingstone

(Assume the tailwheel was utilised when stored with the wings folded)

FlightlessParrot 4th Apr 2021 23:23


Originally Posted by asw28-866 (Post 11021878)
The reworked BN-3 Nymph prototype, the NAC-1 Freelance had a "ready for anything" U/C configuration...
https://cimg6.ibsrv.net/gimg/pprune....87749ea4f7.jpg
Photo: Adrian Pingstone

(Assume the tailwheel was utilised when stored with the wings folded)

A touch overenthusiastic on the round out, Hoskins.

Planemike 5th Apr 2021 20:01

Have we had this on the list.........??

Orličan L-40 Meta Sokol - Wikipedia

https://en.wikipedia.org › wiki › Orličan_L-40_Meta_S...

ex82watcher 5th Apr 2021 20:18

Though the tail is rather...erm 'abrupt',I quite like the look of that.

Aaaaaaaaaaaaaaaargh! 7th Apr 2021 17:24

What about the Mistel?



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