The Hirsch H.100 was a small twin-engine experimental aircraft built in France by René Hirsch to test an aerodynamic gust suppression system. The aircraft flew for the first time in 1954. The system worked well, but due to lack of investment, it was not developed.

One-Off
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Posted Apr 30, 2022, 9:25 PM UTC

81637
bobroscopcoltrane•

I have never seen this plane before. Great find OP!

158
Aviator779OP•

Thank you! I like to find the real rarities.

58
Fuzzyphilosopher•

I want to add on my thank you! This is fantastic and I never would've known about it. You really did find a rare one!

3
all_is_love6667•

Me neither! Wow!

10
vonHindenburg•

What is a 'gust suppression system'?

69
GavoteX•

It's a system to reduce or eliminate the wing bending moment/burst loads caused by rapid or uneven changes in airflow over the aircraft.

The link below shows the fly-by-wire version used by Airbus in action. Watch the ailerons and spoilers. https://youtu.be/YqLyKwx8KNE

88
GavoteX•

On this aircraft it was a pneumatic system capable of adjusting flaps, the dihedral of the horizontal stabilizer, and apparently the rotation of the wingtips? I can't seem to find any top or bottom views of the aircraft. Would love to see some detail shots of the wings!

46
subgameperfect•

Apparently, man found out before the computer and solved these boundary issues... and we never knew.

26
Pattern_Is_Movementquadruple tandem quinquagintiplane•

a very similar system is in use on some modern airplanes

2
swirler•

Also found on L1011-500. Check page 13 here. https://www.tristar500.net/library/technicalprofile.pdf

16
Rowdyflyer1903•

Anyone who designs, builds to completion and flys one is a multi level genius in my book.

42
Warpedme•

Honestly, even if you build one from a kit you're a pretty impressive individual. Maybe not "genius" but definitely smart and with some hard won skills. Flying a plane you built yourself also takes some serious balls.

9
Rowdyflyer1903•

Confidence maybe. Fear can come from things you do not understand. Educated fear is another level entirely. Building an aircraft which is beyond one’s capabilities as a pilot is another matter too. I think that would be rare, but that jet Sonex sure looks sweet.

9
Pattern_Is_Movementquadruple tandem quinquagintiplane•

as someone that went from zero to skilled labor, its honestly not as crazy as you think. All the processes for doing everything are already figured out, after some basic fundamental skills, its just following directions.

2
Warpedme•

My father actually used to build/fly/sell Kit Cessnas in the 70s as a hobby and I used to help him when I was young. I've got the skills and the tools as an adult and I think you are really downplaying the skills you've earned. Our skills are difficult, if not impossible, for many (most?) people to learn. It definitely takes a specific type of brain to build and troubleshoot complex mechanical devices.

And. While I've ridden motorcycles that I built from parts from various totalled junkyard motorcycles, I feel like it takes much larger balls to fly a plane you built. I'm not sure if it's an illusion but the risks seem so much larger.

2
as1161•

So you're telling me that we could've been flying Cessnas in Hurricanes and the bloody French DIDN'T INVEST!

21
Zeutron_Smith•

is it in a museum do we know?

15
Aviator779OP•

It’s on display at the Musée de l'Air et de l'Espace, Le Bourget, Paris.

34
Zeutron_Smith•

thanks :D

6
Warpedme•

Wow. I seriously find that plane aesthetically pleasing. She is a fine looking lady all around. I wonder how she flew.

11
Gladtis•

nice air brake on the front gear. Looks kinda Rutanish.

9
robertson4379•

Cool find! Never seen it, and it’s really beautiful.

7
kyflyboy•

Very French

5
ManaMagestic•

Beautiful

3
Surprisebutton•

This plane looks almost modern! Amazing that it flew in 1954.

3
jeebee25•

(angry Indian Jones voice)

IT BELONGS IN A MUSEUM!!!

Oh, it's... Already... In a museum. Lovely! Well, um. Carry on then. Have you seen any Nazis around? I like to punch them in the face. It's an archaeologist thing really.

3
FlyMachine79•

This is a magnificent submission

3
Sidus_Preclarum•

Lovely!

2
TechnodyneDI•

Really pretty. Some ME-262 genetics in the mix?

2†
Danikovov•

I have to admit, after reading this comment I too think that it has some Me-262'esque appearance

3
TechnodyneDI•

I think it's the nose-to-tail line, engnie location, plus that big-ass nose gear setup.

A faint whiff of Willy in that...

1
Lazar1969•

Nice looking plane

2
Kubrick_Fan•

I wonder if it could make it into Microsoft flight sim?

1

Seems like there'd be a pretty large blind spot on landing.

1
xerberos•

All those gorgeous aerodynamic surfaces, and no spinners?!

1
PL_Teiresias•

Its like the XP-67 Moonbat's little sister.

1