Greetings all. I'd like to introduce Lynx, a fixed-wing sUAS developed by Swift Radioplanes. 

Description

Lynx is a small UAS inspired by military systems because of their extreme durability and practicality (not price). Swappable payloads make Lynx a great choice for photomapping or research. The aircraft is easily launched by hand and can land conventionally or vertically with a deep-stall. The takeoff and landing method – along with its rugged construction – make the system runway independent and ideal for rough terrain or confined areas. Lynx autonomously navigates itself through fight plans or loiter points. Plans can be pre-programmed before takeoff or uploaded during flight. Manual control is possible with the use of a handheld controller. The entire system packs down into two transport cases.

Lynx is not a mass produced product or a modified RC airplane. It is a handcrafted system and built from top quality materials. Each aircraft is flight tested before completion.

Technical

  • Propulsion: electric
  • Construction: Kevlar, carbon fiber, foam
  • Endurance: 90 min w/ mapping payload (demonstrated @ 5174 ft MSL)
  • Cruise: 35 knots
  • Wind Limit: 15 knots continuous – gusting 25
  • Autopilot: APM 2.6
  • Wing Span: 8.25′
  • Weight: 10 lbs
  • Takeoff: auto or manual hand-launch
  • Landing: auto or manual belly land, manual deep-stall
  • Payload Bay: 8.25″ x 4″ x 4.75″
  • Payload Weight: up to 2 lbs
  • Battery Bay: 4.75″ x 4″ x 3″
  • Autopilot Bay: 6″ x 2.5″ x 2.5″

Features

A quick look at the Lynx: 

  • Tool-less assembly
  • Hand launched
  • Vertical landing
  • Waypoint navigation & mapping
  • Return home failsafe
  • Manual control override
  • Throttle safety key
  • Swappable payloads
  • 90 minute endurance
  • Rugged construction
  • Transport Cases
  • Zero maintenance
  • Quiet, electric propulsion
  • Spare parts included

Options

Mapping: A professional, ready-to-fly Lynx with integrated autopilot and a dedicated mapping payload backed by Swift RP’s imagery processing and hosting.

R & D: An autopilot agnostic research platform with plenty of room for systems integration and testing. Take advantage of Lynx’s large payload space and removable autopilot tray. Perfect for researchers, academics, hobbyists, and student competition teams.

Landing

Lynx can belly land or deep-stall. A deep-stall is an extremely steep, yet stable landing method used when operating from confined areas. The deep-stall is activated by a safety switch on the transmitter. The descent can be hands-off or the operator can continue to steer Lynx for pinpoint landings. Unlike a parachute, higher winds are preferred because they steepen and slow down the approach. Also, no extra gear is needed, no parachute folding, no parachute malfunctions, no wind drift, and the deep-stall can be aborted during its descent. The aircraft is designed to break apart upon impact to minimize damage.

Video

https://www.youtube.com/watch?v=eKQKAIjP5z0

Visit www.swiftradioplanes.com for more info.

Views: 7815


Developer
Comment by Randy on May 27, 2014 at 6:15pm

The landing is interesting.  It looks really rough but obviously you've designed it to survive that without any damage.  I guess that's a landing the pilot needs to practice although I guess you could code an autopilot to do that.

Comment by Tipu on May 27, 2014 at 6:35pm

Cool.

Design is very Identical to AeroVironment's RQ-20 PUMA AE UAV, assembly and disassembly is identical too.

AeroVironment's Raven RQ11B uses same landing method and its Autopilot controls it.

Anyway, Its good to see something Pro level in Affordable price.

Comment by Scott Penrose on May 27, 2014 at 6:48pm

Affordable price? Probably my eyes or brain but I can't find the price? (sorry if it is obvious)

Comment by Matthew on May 27, 2014 at 7:20pm

@ Randy, once the deeps-stall has been triggered its actually hands off. Its a very stable descent and the polyhedral helps a lot. The cool things is that the pilot can still steer the aircraft with the rudder for some really precise landings.

@Mike, Lynx was born out of a research project that was very much DIY. I completely understand that some customers will already have transmitters, battery chargers etc., We're willing to offer empty airframes or RC versions if interested.

@ Scott, Sorry I didn't list the price in the post as it seemed tacky. The complete mapping version (everything seen in the layout) is priced at $8700 with NEX 7. A RTF version is $5800, but remember that both price points include things like chargers and transmitters. A DIY version could be had for less. A comprehisive list of what is included can be found here http://swiftradioplanes.com/whats-included/

Comment by Scott Penrose on May 27, 2014 at 8:33pm

@Matthew, thanks for the price. During stall thinning of landing on a ship (large space, but not a runway), how much control do you have. Also what sort have wind have you tried? Thanks.

Comment by Matthew on May 27, 2014 at 8:43pm

@ Scott, If the winds are high enough the descent is completely vertical, it can even drift backwards. We were doing endurance tests the other day with winds gusting up to 31 knots. High winds are pretty typical in northern Arizona so we had to make a plane that could handle it.

Comment by Andrew Rabbitt on May 27, 2014 at 9:29pm

Interesting landing technique...


MR60
Comment by Hugues on May 27, 2014 at 11:10pm

Did you do endurance tests to verify a Sony nex camera will live through repeated landings? I have my doubts...


Moderator
Comment by Gary Mortimer on May 28, 2014 at 12:17am

Looks perfect well done!

Comment by Matthew on May 28, 2014 at 12:47am

@ Hugues, I realize that a deep-stall landing is a bit shocking at first, but believe me that a great deal of time and effort has gone into durability. You bring up a good point and its definitely a concern for any unconventional recovery method. While I cannot quantify your question I can say that to date we have never destroyed a camera because of a deep-stall (to include the NEX 7 and other models). 

Also, the camera mounts in a roll stabilized gimbal that stows for landing adding a bit protection for the camera, mainly the lens.

Of course if you're carrying something extremely fragile you could always belly land ;)

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