Strange Airplanes from WWII

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One does wonder about the landing procedure for this thing?

Exact 3 point?
Land on the nose wheel and the let the vertical stabilizer wheels settle?
Land on the vertical stabilizers and let the nose wheel settle?

I will let the pilots argue it out but repeating landings with the horizontal stabilizer taking the landing loads (even in 3 pointers) doesn't seem like a good long term solution to me ;)
 
One does wonder about the landing procedure for this thing?

Exact 3 point?
Land on the nose wheel and the let the vertical stabilizer wheels settle?
Land on the vertical stabilizers and let the nose wheel settle?

I will let the pilots argue it out but repeating landings with the horizontal stabilizer taking the landing loads (even in 3 pointers) doesn't seem like a good long term solution to me ;)

Agreed. Putting the wheels at the bottom of the vertical stabilizers means every landing will put a lot of stress on the horizontal stablilizer. To me, that suggests a lot of extra structural weight in that area for no real benefit to performance or load-carrying.

The nose gear does seem quite substantial, so perhaps the landing sequence was #2 on your list. Regardless, it seems like the designer was trying to be a bit too clever. Sometimes, thinking outside the box results in truly innovative solutions...but a lot of times it just delivers really dumb ideas.
 
Agreed. Putting the wheels at the bottom of the vertical stabilizers means every landing will put a lot of stress on the horizontal stablilizer. To me, that suggests a lot of extra structural weight in that area for no real benefit to performance or load-carrying.

The nose gear does seem quite substantial, so perhaps the landing sequence was #2 on your list. Regardless, it seems like the designer was trying to be a bit too clever. Sometimes, thinking outside the box results in truly innovative solutions...but a lot of times it just delivers really dumb ideas.

Perhaps the nose wheel was telescoping and could be adjusted? The aircraft had an impressive performance and armament.
 
Agreed. Putting the wheels at the bottom of the vertical stabilizers means every landing will put a lot of stress on the horizontal stablilizer. To me, that suggests a lot of extra structural weight in that area for no real benefit to performance or load-carrying.

The nose gear does seem quite substantial, so perhaps the landing sequence was #2 on your list. Regardless, it seems like the designer was trying to be a bit too clever. Sometimes, thinking outside the box results in truly innovative solutions...but a lot of times it just delivers really dumb ideas.


... except that the thing reportedly had good handling. It certainly had a sparkling performance (360mph top speed quoted). And - given even in prototype form, it carried 5 20mm cannons - load carrying doesn't seem like an issue either.

Any Francophones know of any detailed flight test information? Some more detailed engineering info would be fascinating to read too - along with some flight notes on how they landed the thing.
 
Agreed. Putting the wheels at the bottom of the vertical stabilizers means every landing will put a lot of stress on the horizontal stablilizer. To me, that suggests a lot of extra structural weight in that area for no real benefit to performance or load-carrying.
and, unlike a main gear in a wing or naccelle, there is no weight outboard of the gear to provide any counter forces to reduce the bending moments on the stabilizer centre section
 
Actually it was Don Berlin of Curtiss fame.
I was referring to the guy who designed this:

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The despair of aircraft engine maintenance crews

He111H-Z Zwilling
he111hz.jpg

Gott in Himmel! So many engines, all alike!
Not to mention fly by committee.

There was also a Bf109-Z Zwilling, and lest you think this a peculiarly German disease, the US F-82 Twin Mustang.

The German designs were attempts to get more powerful aerial tow vehicles for gliders. The F-82 was designed for longer range as a bomber escort or intercet.
 
I understand the chief designer went on to a brilliant post-war career as a designer for Renault. :D
Many years ago, BBC Radio 3 (that's the 'cultural' one) did a whole week on music and things French.

Then came the half-hour (or whatever) on great French engineering. This produced the cruncher: 'Ow can I be taken seriously as an engineer, when I confess I come from the country which produces the Citroën Ami-6?'

'
iu.jpeg
 
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Many years ago, BBC Radio 3 (that's the 'cultural' one) did a whole week on music and things French.

Then came the half-hour (or whatever) on great French engineering. This produced the cruncher: 'Ow can I be taken seriously as an engineer, when I confess I come from the country which produces the Citroën Ami-6?'

'View attachment 612249
I think you are missing this...



Cheers,
Biff
 
The despair of aircraft engine maintenance crews

He111H-Z Zwilling
View attachment 612247
Gott in Himmel! So many engines, all alike!
Not to mention fly by committee.

There was also a Bf109-Z Zwilling, and lest you think this a peculiarly German disease, the US F-82 Twin Mustang.

The German designs were attempts to get more powerful aerial tow vehicles for gliders. The F-82 was designed for longer range as a bomber escort or intercet.
The Bf109Z (made from two Bf109Fs) was an attempt to create a "heavy fighter", it was built but never flown.
The Me609 was along the same lines, but was to be built from Me309 components.

The Italians had a heavy fighter design, too, with the Savoia-Marchetti SM.92 which was actually flown for testing.

The Soviets also had one in the prototype stage, the Ol-2 made by Victor Belyaev but the German invasion stopped any further development.
 
The despair of aircraft engine maintenance crews

He111H-Z Zwilling
View attachment 612247
Gott in Himmel! So many engines, all alike!
Not to mention fly by committee.

There was also a Bf109-Z Zwilling, and lest you think this a peculiarly German disease, the US F-82 Twin Mustang.

The German designs were attempts to get more powerful aerial tow vehicles for gliders. The F-82 was designed for longer range as a bomber escort or intercet.
They Luftwaffe had used two separate He111's for the Me323 giant glider towing, but apparently that was a pretty dangerous practice, so the HE111 Zwilling was developed.
 
Many years ago, BBC Radio 3 (that's the 'cultural' one) did a whole week on music and things French.

Then came the half-hour (or whatever) on great French engineering. This produced the cruncher: 'Ow can I be taken seriously as an engineer, when I confess I come from the country which produces the Citroën Ami-6?'

'View attachment 612249
Wonder if it had the retractable rear window like the big Mercury's of the late 60s. Great for exhausting the aroma of too much cheese.
 

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