CMC Leopard Corporate
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- Опубликовано: 24 авг 2024
- Corporate video for Chichester-Miles Consultants Ltd Leopard VLJ. The Leopard 4 was one of the first modern VLJs but was too far ahead of it's time and recieved no investor interest. The project died after two prototypes were built G-BRNM and G-BRKL
I would've really liked to have seen this go into production, probably way ahead of its time.
This would be perfect today...ahead of its time then, but I hope we see something like this again. There are a few emerging subsonecs etc. But this is very well designed.
My dad was the designer on this, I worked on it for 6 years, was fun times..👏👏👏
I really wish it had made it into production. Nice looking aircraft with exceptional performance. Couple that airframe with the long awaited Williams EJ 22. And you have something that couldn’t be touched in the 4 seat realm.
I worked on this engine. It was similar to cruise missile engines and had kind of a short life but was perfect to prove this small jet concept. Loved working on these engines. It's nice to enjoy the kind of work you do.
I believe that the Noel Penny engine that the first prototype had actually was a cruise missile engine! Man-rated for safety reasons.
DaBoligBurls the engines were slightly modified cruise engines.
What sort of modifications were made? Presumably something to do with the oil system as you expect to get your business jet to fly more than once!
MaximDS No I was in Walled lake.
Finding this video and being introduced to this plane is bittersweet. It received no investing because it was built to sell at a fair price. It was competition for the masses that could not be completed with.
I just viewed this vid. Impressed! The Brits do it again! I love the clean lines. Also the range and altitude. This plane has the appearance of a fighter jet. Good show there!
2020 and that place still looks SUPER SLICK!
Lets get the blueprints and crowd source this baby into reality!
I’d like to see this entire genre of twin jet revisited with today’s tech. It’d be interesting to see how much performance could be squeezed out of it while retaining the forgiving and tame manners of the Mustang and Phenom 100, combined with Garmin’s avionics of course.
I suspect, with performance-minded compromises made, a relatively inexpensive “Ferrari for the sky” would have an abysmal safety record. A plane like the CMC will always be a “pilots airplane” unsuitable for most pilots lacking significant time in very high performance jets... for those capable we already have the Premier, Phenom 300 and CJ4. For an idea of the workload see Premier1Driver’s youtube channel.
Given small amount workers there , I salute to their effort in building such new jet.
What a beautiful little jet.
What a looker! Time to find the prototypes, put the plans through a review, and revive this baby.
100% Agree. Gr8 👀👀er. Fast Tremendous economy & distance. Perhaps it's down fall were the engines long term from what l have read on this Site.
This was a truly unique jet with a smart approach...make it small, which in turn makes it lightweight, which in turn allows smaller engines to be used, which in turn means that you can go just as fast as the larger jets for less money! I think this is a perfect example of why smaller is better!
Very sexy plane. I love how retro everything feels in this video.
Man that thing gets me pumped
45,000 feet at 500 MPH...
That's terrifying. You're flying above Emirates A380.
Nice looking small jet, its too bad they ditched the idea.
One of the great things RUclips is the opportunity to see airplanes that didn't make it to market but were absolutely great aircraft, like this one. The criticism about the planes aerodynamics or exaggerated performance figures is unfounded. The futuristic Piaggio Avanti has a lifting fuselage and so does this one, even if square instead of round. Like in the Avanti, this has a big effect on efficiency, speed and range. The test pilot report was accurate and not just merchandising. As much as I love aviation, anyone well informed about it knows that some of the very best aircraft don't make it to market for unfortunate and, sometimes, the dumbest of reasons.
I saw an airplane like the Avanti land at the airport at Davenport, Iowa as I was driving home....I went over to look at it....I wish I had a camera with me...it seems the FAA guys were not ready for composites so they wanted more and more metal until the promise of the airplane could not occur...and now composites are al the rage....
don't think the Avanti has a lifting fuselage. it has triple lifting surfaces, the fore plane (debatable whether to call it a canard) and wings and the horizontal stab are all lifting surfaces. This in itself is unusual!
cancel that, I just looked at the Avanti specs, you are correct it has a lifting body.
@@granskare The Avanti is an all (or mostly all) metal aircraft. You must be thinking of the Beechcraft Starship.
With todays Tech and Materials One can Build one like it, in your Garage!
This is a very Kool Bird!
beautiful plane, thanks for sharing the video
This project is from the end of 1980s beginning 1990s and people still wish to this abandoned for many decades project a " good luck" from now on!
Laughs.
Amazing design. It reminds me of the Foxjet of an earlier time and the Eclipse 500 later on in terms of VLJ designs by small independent companies.
Eclipse 500 is pretty lame in overall performance compared to the CMC Leopard
Cool design, good thinking. Sharp, yet simple and dynamic fonctional shape, giving wide comfortable cabins for long flights... Wishing you all the bestmin the future! 😀
Looks fast when parked.Cool.
"We need to consider bringing back the prototype into production with a more sleek design that include an emergency parachute fuselage system. The exiting main hatch need to be redesigned for easy entry and exiting of the craft before flight and during an emergency.
Overall? I like the Craft. Speed! Comfort, safety and performance is all that is needed to be number one in the sky. I would like this aircraft to be developed and marketed. The design was the future; Now we are in the future, it is time to fly." 👍
Yet another example of the British actually being out in front of everyone but not getting the traction, leaving others to fully achieve, exploit and mature what they actually originally started. I certainly hope this is not the fate of Reaction Engines and the Skylon/SABRE project.
Yup. Brits are Great German Mechanics, with missing teeth and dirtier garage.
500 @45,000 feet?!?! Turn on the heat and whip on the O2 ppl!
Pretty aircraft - well-balanced... It would make a very nice commute aircraft and would take prizes at air show events!
Reminds me of a Lotus Esprit. They should put it in the next James Bond movie.
Ooh, a new Bond jet! I could handle that! Loved the BD5J in Octopussy.
Reminds me of a Black and Decker Dustbuster.
Wow, it is a shame this did not see production
Huh, some interesting Shenanigans with the commenting system. I was going to respond to a few but perhaps They'll eventually be seen if I answer like this.
RB747domme and The Hellish Frog might be surprised to find that the aerodynamics are better than they think. Coincidentally whilst I was at the RAeS on Friday the Aircraft Research Association's stand had a CFD image of the leopard on it's banner, some fairly nice looking flows there.
Dave M needs to consider that whilst the Comet I may have taught the aircraft industry a lot in the early years we are talking about entirely different materials here. The Comet I used extremely thin aluminium skins (considerably thinner than modern aircraft) The Leopard is almost all composite, this responds to fatigue cycling in a different way. The aircraft in the video is also a pre-production prototype.
ROCKSTARCRANE, yes the wing is a long way back, however the engines sit nearly on the tail, and these are a fairly significant arm. Then there's the flying surfaces, also pretty weighty control systems there. The fueltanks are almost between the engines with the baggage bay above. The worm screws and motors for the flaps/spoilers are also behind the wing. The second row of seats probably sits pretty much on or very near the CG (for stability reasons with/without 3 pax)
Alan Caldoza I'm afraid you'll find that the aerofoil is an ARA designed super-critical section not a NACA section. You're probably right however that high lift devices would be useful. However, the weight tradeoffs must be examined!
DaBoligBurls
DaBoligBu
Big fish patrolling to stop the little fish from surviving :)
Some body need to put this cmc leopard into production now damn it.
I think that is really cool. It is like a flying sports car. Perhaps like a four seat jet fighter. I like how it breaks from the traditional shape.
They say more like a Ferrari with wings. I think it is more like the Lotus Espri with wings. :)
You can never be too far ahead. If the market pulls, you can get funds from risk-investors. Good gadgets come fast.
Questions:
1. How many firm orders with 10% paid in advance were present? Important for investors.
2. What did the CAA told them over certification of the composite pressure cabin? (damage tolerance etc)
1982 - British Company, CMC Leopard, made a 4 seat private jet, fast and sleek.
Price tag - $1M, Speed - 500mph, Distance - 1,700 Miles, Alt - 45,000ft
USA - trailing decades behind the Brits, as usual
But don't expect the arrogant, uneducated Yanks to admit it! Do you know that only about 20 percent of Americans own a passport? The average ignorant American grows obese, worries about diabetes or heart problems constantly, and has no time to educate himself about the world.
Hess where the engines came from. Not Britain!
Pity it did not get backing. Looks like a great little jet, even by today's standards!
What a wonderful aircraft that looks like it would be.
its a shame this plane did not make it to the market
Awesome achievement for one man. Some of the people criticising here should try financing, building and flying their own airplane some time - to get some perspective.
DaveKarl ii
Or...or they could just go fuck themselves and their ignorance
I believe it was mainly due to a lack of interest in the project from investors. There was also an issue with engine supply, the 001 aircraft had Noel Penny engines and 002 was meant to have more powerful versions of the same. When Noel Penny went under the engines were changed to Williams FJX-1 engines. There was, apparently, a deal done by Williams to supply the FJX engine to only one company sometime later, since that company wasn't CMC they once again didn't have any engines.
Very nice nothing like growth you can see . keep up the good work !!!
This is actually a better design than the vision jet.
I like this plane!
I remember this project but I can't see how this design could ever have been pressurised in order to fly at 45,000. The forward-tilting canopy; the square-edged windows (didn't we learn about them from the Comet?).
Wow there's a lot of experts here. According to these guys the plane should have crashed and burned years ago. The plane was built and tested putting a dream into reality. How's your projects going?
Two prototypes were built and flown. While a remarkable milestone, that is an incredible distance from receiving certification, establishing a production line and support network and delivering sellable aircraft.
Lots of dreamers in aviation. And most of them lose lots of money.
Dave M Yeah you totally missed the point, Dave.
How's your projects going haha love it
It also layed the ground work for planes the sonic jet for 40K
Dave M, what have you done in your lifetime?
It was massively successful. It flew for 250 hours and met all of it's design criteria while hundreds everyday never get past the 'paper napkin' stage.
Many people are simply not capable of raising money to further their
excellent projects, it is normal that the bulk of projects don't get
into manufacturing.
Since the advent of social media, the "Experts" are growing rapidly in numbers
Imagine this with modern composite manufacturing, and modern engines
Probably reduce its weight significantly and increased thrust and fuel economy
I want to be like Chichester-Miles, i want to study on aircraft engineering and work with him.
+stArs Saga Yes but he's dead.
Hello ThePaulv12 can you help me to work at Aviation. I want to develop the Cmc Leopard Corporate. I am a designer. I can design an aircraft. Please contact me if you are need my works. sed_dream@yahoo.com
Beautiful looking little jet but the usual problem in the UK nobody would back it, if this would have been in the US we would probably be flying in it today.
Fixing all other problems,This is areal gorgeous small Family Jet.
With such a small internal volume and huge window area, it couldn't be decently pressurized without significant risk of explosive decompression should a window panel break. Because if this it would only be safe to fly at modest differential pressures with oxygen masks at higher altitudes. Also the car-style "a-column", with the very pronounced change of direction from windshield to side window can't be good for aerodynamics, there must be a ton of separation going on there (not great for the engine intakes either). With all the useful load ahead of the wings it must rely on heavy trimming (with associated trim drag) to adjust for CG excursion with varying loads. The airplane had good looks, seemed like a car of the future, but it doesn't surprise me that it didn't go forward.
corisco tupi Exactly. It's almost like CMC was trying to copy the failed Beech/MS.760 project, 30 years later.
+corisco tupi Yes I agree, it's too angular. Curves are both sexier and more efficient... a happy coincidence :-)
Massively successful. It flew for 250 hours and met all of it's design criteria.
Many people are simply not capable of raising money to further their excellent projects, it is normal that the bulk of projects don't get into manufacturing.
By the way you 3, what have you built and taken further past where this craft made it to? Just flying it was a massive achievement.
+Mark Mark ...Yay, they built a shitty jet that no one would want and isn't marketable in the current climate. I'd rather someone build a CAD file of a good product than build a proof of concept of a shitty product.
"what have you built and taken further past where this craft made it to?" I was an aerospace design engineer for one of the global aerospace giants, so the answer is, without doxxing myself... a lot.
Bob Doe. (brother of John? lol).
So you worked for somebody else designing an ashtray are you're more awesome than this man who put up his own money, built and flew a plane he designed.
You seriously over rate yourself, you're a dime a dozen.
Beautiful airplane. Looks like a fighter which might be a problem with rich old men executives trying to clamber aboard this aircraft with their bloated bodies.
CRIPESZ !!!! I was working as a Heli Flight Instructor at Cranfield UK way back in 1981/2 and this thing was a mock up in the back of a Hanger THEN !! ... seems like it had some ongoing design issues and then the company ran out of funds ...
Great video. I really enjoyed it!
I remember this design being announced in the aviation press quite a few years ago, and thought it was a brilliant idea. Huge disappointment that it never came to production. One of the prototypes (now painted red) is displayed at a roundabout in Bournemouth each year during the Bournemouth Air Festival - an annual reminder of what could have been. The Sport Jet II is a modern contender from the USA, but it is single engine, and does not have the speed, range or ceiling of the Leopard.
DUH. Because it is single engine.
I believe one of them is at Coventry Air Museum.
Beautiful plane. What happened to the project?!
Cool, I want one! When I get rich in my next life I will get me one. :)
Holding out for the 007 model ;)
the 007 personal fighter jet!
what a shame this lovely jet never got built. It looks a lot more stable then the maverick jet and that's a company that refuses to die!
Fabulous 👀👀 Aircraft. Unfortunately it never got off the ground if my memory serves me well. Obviously the prototype did. But l dont recall further Aircraft other the ×2 Prototypes. Gr8 pity. Certainly even by 2days standards it would be sensational
Looks straight outa the 80's.
well it would
Not sure I'd like to be flying at 45000ft with a canopy/door that size. As a rule the higher you go the smaller the window and doors. At max diff there would be a lot of lbs on that canopy.
One of the most sexiest small jets I seeing
I'm not an aeronautical engineer, but this aircraft appears to be one which might be a handful for any but the most experienced pilot. With the main wing that far back, there must be some pitch-stability issues....
Sorry it did not work out. Looked squirly to fly.
So good looking.
Un petit bijou technologique.
i remember the original G-BRKL had Noel Penny pure turbojets on it. If they had a good hi bypass turbofan back then it just might have made it....
Interesting plane but there is something awkward in the windshield shape
You ca judge the structural integrity of a window bu just watching a video? Boy... Youre something. Go apply for a major aerospace company and get that unique talent to work!!!
Sir Freddie Laker of the private jet.
Nice combination of both high and low aspect ratio NACA wing design. I would like to suggest a longer wing root to accommodate wider flaps for short take-off and landing and more fuel capacity plus a wing leading flaps or slots improving angle of attack. The result will be close to F-5 agility
ARA wing design
a beauty but eventually the developers ran out of money
front end reminds me of the Concord.
You would think the guy working on the project can afford himself a laser mouse at least
Remember that this was filmed in the early 1990s, laser mice didn't exist then!
Ashame there were no investors.
Excellent
Almost needed a swing wing, stall speed looks high. Might’ve been successful if it could land on a grass runway.
I’d like to get my hand on the design papers. I see Canard written all over this! That would slow that stall speed!
Even by 2days design standards thos design still holds its place right at the top of the tree. Gr8 Shame it didn't have the legs 2 go in2 full production. Gr8 Aircraft 4 UK, EU, USA, CANADA ECT ECT.
In the end the rich became mega rich, bought Learjets and there was no niche for a budget jet.
Lovely aeroplane. To bad it didn't make it in the marketplace. It seems that thing are moving in that direction. Maybe he was ahead of his time ?
As for the power plant, why not look at any American manufacturer like that of the BD-10 or a bigger one installed to that famous James Bond jet. Rutan aircraft don't seem to have engine availability problem in their homeland coz the US have vast arsenal of jet engines.
Looks like a mini concord .
Reminded me of the USAF F-111.
Great design.
I HAVE SIMULATOR FLY THIS AIRCRAFT. I LOVE THIS AIRCRAFT CMC LEOPARD VERY GOD PERFORM.
Looks like a '70's boxy Buick.
Affordably priced at 1000000 dollars, ill take 2
Not really aimed at you and I! Think the kind of person who thinks nothing of dropping millions on a car at auction.
so how many are you thinking of buying ??
Oh I'll take 3, One for weddings, one for funerals, and one for everyday. :P
lol. if only !!
FpvExmouth j
I like it!
That could have made a nice introduction trainer.
Nice aircar)))
yep, that's the billion dollar name.
Looks like the takeoff and landing speeds are really fast. I didn't see any flaps to help it slow down a bit. And no airbrakes/spoilers on touchdown to put more weight on the runway. Seems like that plane was only good for very good, experienced pilots.
You can't see it clearly in this video but the entire wing aft of the 3/4 chord line is actually a moving flap that goes from +45 degrees as a spoiler to -45 degrees as a flap, all the roll and pitch control is from the tailerons. I don't know how it functioned exactly but I assume that the pilot would have been able to pre-arm spoilers and when the weight on wheels switch activated it would flip from flaps to spoilers on landing.
wonder why big corp. like this produce videos with a 1990 flip phone.
+jay lehman CMC was never a big company, they only ever had a couple of small buildings. These clips were filmed in the early 1990 in the quality of hand held cameras of the time, unfortunately while the originals may be able to be digitised in better quality with the death of Mr. Chichester-Miles a few years back the opportunity is probably lost.
Seems like a good airplane for training pilots to fly jets instead of using piston single engine aircraft and has two engines in case of engine failure would be much safer.
Get this going with some improvements as Wider flaps,comply with 9psi pressurization of a well design cabin,parachute,round ages,5 seats, well fix landing gear ,good aerodynamics etc.Some body do it please.
super model and power
Muy lindo, love
Anytime after 2010 and it would have succeeded. It was just 2-3 decades before it’s time…
OK,where do the long range tank's and rocket pod's go?