One of mankind's most adored gadgets (yes, the jetpack) is moving one step closer to mainstream today with the unveiling of the Martin Jetpack. Revealed in front of a crowd in Oshkosh, Wisconsin, this human transporter is technically defined by the FAA as an "experimental ultralight airplane, equipped with a gas-powered, V-4 piston engine and two ducted fans that provide the lift." Currently, the $100,000 machine can only hover for around 30 minutes and rise to 8,000 feet, and those who sign up to purchase one will first have to complete 15 hours of flight training as well as a "safety screening." Check out an all-too-short video after the jump to see the device lift off, float around and land -- totally underwhelming, but the optimistic few will surely see promise.

Read - Martin Jetpack unveiling, video
Read - Details on Martin Jetpack
Read - More photos from EAA AirVenture

Oh daddy, would you look at that. Forget jetpacks, we've got a deep ache in our G-Jetson-loin for this, Atair Aerospace's EXO-Wing, the world's smallest human-piloted jet. Smaller even, than the Gryphon parachute. It's on display right now in New York's Metropolitan Museum of Art as part of its Superheroes: Fashion and Fantasy collection. The only thing we know about the EXO-Wing is that the twin micro-turbine-powered contraption is light enough to be worn as a backpack. Hell, we don't even know if it really works. Regardless, we've got our weekend booked... up, up and away!

P.S. The webbed creature below the EXO-Wing is sporting an Aerosuit for skydivers and Aquaman wannabes with a thing for Tom Jones.

Read -- Atair's EXO-Wing
Read -- Super Heroes, Fashion and Fantasy exhibit

We've seen quite a few jetpacks come and go, but Thunderbolt Aerosystem's has managed to set its ThunderPack apart with marketing materials that promise to make you a "ThunderMan"... for 37 seconds and $100,000. Creator Carmelo "Nino" Amarena says his pack is an update of the hydrogen peroxide-powered packs of the 1950s, but that it's been updated to use two fuels and special catalysts and promoters -- which have led to bench test firing times of up to a whopping 75 seconds. We're not sure how that's going to be useful in military, disaster relief, or border patrol efforts like Amarena imagines, but we can sort of see how it might make a corporate event more interesting. Still, we just can't see giving up our feet, bikes, or cars for this or any other jetpack -- check out why in the video after the break.

Sure, we all love jet packs. Who doesn't enjoy strapping a gigantic tube of highly flammable fuel to their back and igniting it so it can propel you hundreds of feet into the air? Well, an inventor named Raymond Li has a different idea, one which he's just managed to patent: a water-propelled rocket pack. The new design would use a system of conduits which route pressure to independently pivoting thrust nozzles, while the actual engine, pump, and dangerous gases remain floating on water in a self-contained, buoyant package. It's somewhat unclear if you'll be able to rocket over land using this device (the fact that the engine is water-based would suggest no), though it is an interesting development for jet-pack enthusiasts.

[Via Wired]

Sure, watching Wowwee's FlyTech Dragonfly buzz around the room at your command elicits quite a few positive emotions, but we can't even fathom the thrill (not to mention the feeling of impending death) that would come from cruising the skies via jetpack. Yves Rossy -- a Swiss daredevil whom we all look forward to living through vicariously -- says he has become "the first person to gain altitude and maintain a stable, horizontal flight thanks to aerodynamic carbon foldable wings." While we've seen jetpacks before, and realize that folks have taken to the air on similar devices in years past, Reuters is giving us a sneak peek at Rossy's flight, which he took on the kerosene-powered, back-strapped vehicle -- and we admit, it looks like quite the thrill ride. So if you're looking to quell your fears before picking up one of your own (hopefully) in a few years, be sure to hit the read link for a live action video (and a good reason to grin).

[Via Fark]

Remember that personal helicopter we peeped last year which some of you didn't think was real? Well, we tracked down the manufacturer and yeah, you guessed it, dug out the price. Ok, it's not exactly the Bell Rocket Belt we were promised back in the 60's when Engadget was an upstart think-tank focusing on emerging technology for the US military. Still, the Japanese built GEN H-4 co-axial helicopter features a 125cc, horizontally opposed 2 cylinder engine capable of launching your ass some 1,000-meters (about half a mile) high at a max speed of 90km/hour, or a bit more than a Sammy Hagar. While it would appear to lessen the risk of setting fire to your nether regions, any margin of safety gained is likely offset by the threat from decapitation. For as the machine translation states: the H-4 is not a finished product, yet is "probably" possible to self-assemble. Oh, ok then, can we just PayPal the ¥3,780,000 (about $32,500) or will a personal check suffice? Yet judging by the photo, it's safe enough for children to operate so let's not go all pansy just yet.

[Via Impress]

No matter how played flying cars, kayaks, and other strange contraptions are, the allure of a jet pack strapped onto your back just doesn't seem to lose its luster. Rick Herron, creator of Skywalker Jets, has devised a rocket pack that weighs about 90 pounds and can propel a 200 pound pilot around the air for what is likely the most invigorating 5 minutes of their life. The crazy part is this thing actually works, and it doesn't get your backside all crispy in the process. Rick plans on producing a finalized model that has a range of about 4 miles and includes a GPS unit integrated into a HUD showing flight time and engine information among other things. A prototype build solicited a bid over 10 grand from a hopeful buyer (or helpless Star Wars fan), and this project hopefully won't end here -- Rick plans to get the device approved by the FAA and available to anxious customers as soon as possible, and the good news is that becoming a rocketeer will only cost you a cool $200,000 if it goes into production.

[Via Mobilewhack]