We have proven underwater flight with the world’s
first full ocean depth capable (37,000 feet) submersible, Deep Flight
Challenger I just quickly calculated that to be 1,121 atmospheres or( 16,481 psi) at depth,...mind boggling! Multiply that by vessel surface area and,... wow! Joe From: brenthartwig@hotmail.com To: personal_submersibles@psubs.org Subject: [PSUBS-MAILIST] THE DEEP FLIGHT AVIATOR Date: Fri, 29 Aug 2008 19:47:57 -0700 Jay, "Please review the emails and note that anyone with any submersible experience has repeatedly told you that dive brakes are a poor idea. You misspeak for the group. Those people that have been operating submersibles for some time and those with submarine experience strive for KISS (and they keep telling you this) while those just building and/or no experience love redundancy and extra safety features. " You seem to be missing the point of a open flowing discussion. Just saying some thing is a bad idea with no reason and/or very limited reason why you believe it to be so, and then expect the discussion to just die because you don't have any creative juices you wish to put to task, is not a open flowing discussion. Just because the Navy didn't want to continue research on some thing and ran into trouble with it, doesn't mean the problem can not be solved in the future by any number of people or groups. Militarys around the world and through out history have consistently resisted change of tactics and technology. Much of the time they had to be beaten a number of times by there opponents better tactics and/or technology before they would seriously consider change. Some times companies couldn't get funding for the development of a concept they had for a military weapon. So the built and tested it them selfs with there own funds to prove the design. Then later the military might buy it. Even once they have some new weapon finished and tested, they drag there feet to implement it. So using the militaries of the world as a bench mark of what can or can be done successfully is not the best plan. That said, we can still learn a lot from them, but I don't consider them the final word on what can, or can't be done. If the K boats are the mark of what fits roughly into the KISS principle then the Deep Flight Aviator, Challenger, Super Falcon, Marion Hypersub Fathom, Cliffs R300, Uboat Worx subs, Alvin, S201, Bioniorca, and many more don't fit in as being KISS sub over all. Please stop using the KISS principle as a personal insult. The KISS principle is a fun and very useful concept that is having all the fun part taken out of it by you. Why didn't you tell Dean to KISS, when you didn't like his drag shoot concept? I believe it was because you know you wouldn't get away with it. The Deep Flight Aviator was not designed just for one purpose only. They wanted to cruise like a whale shark or a dolphin along side them and along the sea floor. One of the primary objectives was for it to be hydrobatic and be able to perform a roll about its axis 0-360 degrees and in doing so needed a five point harness. Many other things were put into the Aviator for testing ideas then just going deep. The Deep Flight Super Falcon is going to be, in many cases a rich mans toy. "Deep Flight Update from Graham Hawkes - August 2008 "Some twenty years after my first suspicion that submersibles were stuck in a dreary chrysalis stage and needed to spread wings, we have achieved our long term goals. We have proven underwater flight with the world’s first full ocean depth capable (37,000 feet) submersible, Deep Flight Challenger, built for the late adventurer Steve Fossett. And, we have evolved the art of underwater flight for its own sake through three generations of pure fliers. For me, the butterfly has finally fully emerged… Deep Flight Super Falcon, the first production underwater flier designed specifically for private owners." http://www.deepflight.com/ http://www.google.com/patents?id=j197AAAAEBAJ&dq=graham+hawkes+submersible "Abstract A winged submersible having a neutral to positive buoyancy utilizes an inverted wing structure to allow the wings to create downward force on the submersible in response to forward movement. Internal pressure pods are provided to allow an occupant to maintain a recumbent sitting position. The pressure pods are maintained at a constant pressure with life support systems, while the remainder of the hull is not pressurized. Acrylic domes are positioned to allow access to each internal pressure pod and when closed, the occupant's head is positioned within the center of the dome for optimal optics under water. Wings with adjustable control surfaces provide the submersible with the ability to roll about a longitudinal axis 0–360 degrees in either direction." Patent number: 7131389 Filing date: Jan 22, 2004 Issue date: Nov 7, 2006 Inventor: Graham Hawkes Primary Examiner: Lars A. Olson Attorneys: Paul K. Tomita, Dergosits & Noah LLP Application number: 10/763,041 http://www.incredible-adventures.com/deep_flight1.html "THE DEEP FLIGHT AVIATOR Be among the first in the world to experience a totally new dimension of flight…underwater. Hundreds have traveled to space. Few have experienced the incredible thrill of a Deep Flight Adventure. The Deep Flight Aviator is a new class of hydrobatic submersible craft, built to fully explore underwater flight. Think of conventional submersibles as slow, bulky, stiff underwater balloons, and the Deep Flight Aviator as a lightweight, high-powered, composite airframe with wings, thruster and flight controls. It is similar in configuration to the USAF A10 and is piloted by two crew. The Deep Flight Aviator looks like an airplane and flies like an airplane. THE INVENTOR AND PILOT The man behind the Deep Flight Aviator is Graham Hawkes, the inventor of a significant percent of all manned underwater vehicles ever built for research or industrial use. “The Aviator is unlike anything in existence, and the underwater experience is unparalleled. In conventional subs, you perch on a seat; in the Aviator, you strap tightly into the same five-point harness restraints used by Indy car racers. Moreover, you will see more! Even the best of today’s submersibles are equivalent to scouting the jungle for tigers with a marching band,” says Hawkes. “Traditional submersibles are noisy and lit up like Christmas trees. Any organism that can flee, does.” The Deep Flight Aviator combines the freedom of scuba and the depth capability and underwater viewing of a submersible with the low intrusiveness of a stealth submarine. A traditional submersible must slowly sink down to its desired depth. The battery-propelled Deep Flight Aviator is “flown” quickly and quietly to its destination." http://web.archive.org/web/20060321052337/http://www.incredible-adventures.com/deep_flight1.html Your resident possibility thinker ;)' Regards, Szybowski From: bottomgun@mindspring.com To: personal_submersibles@psubs.org Subject: RE: [PSUBS-MAILIST] Stopping Flaps Date: Thu, 28 Aug 2008 20:00:13 -0400 Brent, You misspeak for the group. Those people that have been operating submersibles for some time and those with submarine experience strive for KISS (and they keep telling you this) while those just building and/or no experience love redundancy and extra safety features.
Please review the emails and note that anyone with any submersible experience has repeatedly told you that dive brakes are a poor idea. While on the surface they sound like a great idea (go-cart, bicycle, or car…what about boats?), they don’t work. You are better to rely on procedure than a mechanical gimmick underwater to avoid a hazard, especially in your typical PSUB. Speed is hazardous underwater: 1. Close to the bottom you are going to run into something despite any mechanical or electronic contraption; 2. Speed will force you out of your operating envelop in a jammed planes causality resulting in a violation of your test/crush depth. It has been demonstrated that dive brakes and braking chutes have not worked to mitigate these two safety issues. A five-point safety belt doesn’t do you much good when you are stranded on the bottom, just makes it more difficult to get the body out.
Speed was designed into Deep Flight for one reason only and that was to get to a very deep bottom, not for cruising on the bottom. Graham Hawks recognized that much of the ocean was very deep and most submersibles only penetrated the top veneer. Alvin took hours to get to an even moderate depth and Graham wanted to return to the bottom of the Marianas Trench, over seven miles down. He knew he would need a unique vehicle to get there fast and Deep Flight is the proof of concept. If you can go to the bottom of the Trench it is tough to operate outside of your depth envelop and small propulsion motors were to be used for cruising at a safe speed on the bottom. Hawks promoted this concept back in the 80s and hasn’t reached it fully yet. Jay
Respectfully, Jay K. Jeffries Andros Is., Bahamas
Talk sense to a fool and he calls you foolish. - Euripides (484 BC - 406 BC)
From:
owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brent
Hartwig
Greetings Sean, Regards,
Date:
Wed, 27 Aug 2008 17:46:48 -0600 |