Ion Aircraft Ion

The Ion Ion is a two-seat, twin boom, pusher configuration light aircraft based on the DreamWings Valkyrie. It was still in development in 2010 but is intended either for homebuilding from kits or flyaway production, with versions meeting US and European rules.

Ion
Ion at AirVenture 2010
Role Two seat light aircraft
National origin United States
Manufacturer Ion Aircraft
First flight 17 July 2007
Number built One (2011)[1]
Developed from DreamWings Valkyrie
Ion prototype at AirVenture 2010
ION 100
ION 100

Design and development

The Ion Aircraft Ion is a development of the DreamWings Valkyrie, a twin boom, pusher configuration ultralight aircraft which flew for the first time in 1999. The Valkyrie generated considerable interest and many potential customers, but DreamWings became bankrupt in 2001. The project was later restarted by a customer group under the name of Ion Aircraft[2] and the part-built prototype of the Ion was displayed at Oshkosh in July 2005, though the first "hops" were not made until July 2007.[3] Whilst the Valkyrie and the Ion share the share twin boom, single pusher engine, mid-wing layout, have tricycle undercarriages and seat two in tandem, they differ significantly. In particular the Valkyrie's strongly swept and tapered fins, combined with a trailing low set horizontal tail, which extended beyond the booms, have been replaced with swept, parallel chord fins with a constant chord tailplane linking their upper tips. Unlike the Valkyrie, the Ion does not have a canard.[3]

Much of the Ion is made of composite materials; the fuselage pod, the wing centre section within the booms, the booms themselves and the empennage are all formed from carbon fiber/epoxy pre-pregs. Outboard of the booms the wings are of bonded aluminium. The wings carry plain piano hinged ailerons. The engine cover is GRP. The cockpit has a single piece canopy, shaped to allow the rear seat to be 8.5 in (220 mm) above the forward one, giving its occupant better vision. The prototype has fixed, aluminium cantilever spring main undercarriage legs and has been flown with and without wheel fairings. The mainwheels have hydraulic brakes and the nosewheel castors.[3][4]

Several options are to be offered, including a 3 ft 6 in (1050 mm) shorter[5] span wing which will raise the cruising speed by 25 mph (41 km/h; 22 kn) but also increase the stall speed by 32%, a retractable undercarriage and a ballistic recovery parachute. Kits will be offered to meet either US Light-Sport Aircraft (LSA) rules or European microlight regulations but flyaway aircraft will be built to LSA rules. Other engines, such as Rotax variants in the 100-115 hp (75-86 kW) power range may be fitted.[3]

In the two years after its first flight in 2007, the Ion prototype flew about 60 hours, some with a Jabiru 3300 six cylinder engine which experienced cooling problems but from May 2009 with a 100 hp (75 kW) Rotax 912ULS flat four engine.[3] In 2010 it appeared at AirVenture, Oshkosh under its own power with a ventral air intake and a new three blade propeller.[6] The second prototype was under construction but not registered in mid-2011.[6] The Ion will not be offered for sale until flight tests are completed.[3]

Variants (proposed)
Ion 100
Kit, LSA rules, fixed undercarriage.[4][7]
Ion 105
Kit, US Experimental amateur built rules, retractable undercarriage, short span wings.
Ion 110
Kit, for European rules.[4][7]
Ion 105
Kit, European microlight rules.
Ion 120
Flyaway, LSA rules.[4][7]

Specifications (LSA, Rotax 912ULS, estimated performance)

Data from Jane's All the World's Aircraft 2012/13[6]

General characteristics

  • Crew: Pilot
  • Capacity: 1 passenger
  • Length: 24 ft 0 in (7.32 m)
  • Wingspan: 32 ft 6 in (9.91 m)
  • Height: 6 ft 5 in (1.96 m)
  • Fuel capacity: 120 lb (54 kg)
  • Useful load: 552 lb (250 kg)
  • Powerplant: 1 × Rotax 912ULS Air- and water-cooled flat four, 100 hp (75 kW)
  • Propellers: 3-bladed Warp Drive carbon fibre pusher

Performance

  • Cruise speed: 152 mph (244 km/h, 132 kn) at 75% power
  • Stall speed: 43 mph (69 km/h, 37 kn) flaps down
  • g limits: +4.4/-2.2
  • Rate of climb: 1,610 ft/min (8.2 m/s) maximum at sea level
  • Take-off run: 500 ft (153 m)

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References
  1. Vandermeullen, Richard: 2012 Kit Aircraft Buyer's Guide, Kitplanes, Volume 28, Number 12, December 2011, page 56. Belvoir Publications. ISSN 0891-1851
  2. "Ion history". Retrieved 6 February 2012.
  3. Jackson, Paul (2011). Jane's All the World's Aircraft 2011-12. Coulsdon, Surrey: IHS Jane's. pp. 770–771. ISBN 978-0-7106-2955-5.
  4. Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, page 111. Flying Pages Europe SARL, 2015. ISSN 1368-485X
  5. "Ion details". Retrieved 6 February 2012.
  6. Jackson, Paul (2011). Jane's All the World's Aircraft 2012-13. Coulsdon, Surrey: IHS Global. p. 842. ISBN 978-0-7106-3000-1.
  7. Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011-12, page 126. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X
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