Heligrid

Heligrid allows any helicopter or any UAV fitted with a harpoon to land or take-off from a helideck in fully safe conditions, without any assistance, even through rough seas and bad weather. The advantages of Heligrid, which are important for the off-shore, maritime, and naval industry, are applicable for land based grids as well. It can be installed on almost every existing building or newbuilding.

Being practically maintenance free, Heligrid offers low costs of ownership. Cramm HLS offers a turnkey solution with Heligrid, custom made to meet any requirements of clients, either safety wise or architectural wise, regardless if it’s on sea or on land. Heligrid’s helicopter landing grids are used in the following markets: Oil & Gas, Maritime, Defense, Yachting, Real Estate, and Drones.

Heligrid combines precision engineering with practical reliability, a low maintenance landing grid that lets you operate safely and independently, offshore or on land, in the most demanding conditions.

Harpoon system

The Heligrid in combination with a “harpoon rapid securing system” is a system with the aim of securing a helicopter to the flight deck immediately after touchdown by engaging and locking of the helicopter harpoon onto a landing grid in the flight deck.

The pilot can land on the heligrid the same way as on land. While landing, the harpoon automatically latches onto the helicopter landing grid. The helicopter is then pulled toward and fixed onto the helicopter deck. In this fixed position, the helicopter follows the movement of the vessel without the risk of sliding or toppling. The pilot can now safely shut down and leave the helicopter together with all passengers.

Easy Lift-off

While the harpoon is still latched onto the grid, the pilot can start up. The pilot will then ensure the helicopter has sufficient take-off power to create tension between the helicopter and the landing grid. At the last moment, the pilot disconnects the harpoon from the Heligrid, which is controlled from the cockpit. This allows the pilot to immediately reach a safe distance from the vessel. This makes a major contribution to safety, especially in rough weather conditions.

No assistance on deck needed – A major benefit of the Heligrid is that no additional crew is needed on deck during landing or take-off. The pilot can land and take-off safely without assistance or losing time.

Grid design

The grid is constructed of: Top plate – dimensions and technical specifications are based on STANAG 1276 and the Foundation – differ by type of grid.

Foundation – The design depends on several factors such as: MTOW (Maximum Take-Off Weight), FOS (Factor of Safety), scope in use, Experience and results of the past, available (new) materials, and available (new) production technics. The design is approved for movements of 30 degrees and static usage to windforce: 50 knots – 65 knots without usage of chains.

Assembly – The top plate and the foundation of the Heligrid are linked to each other by mounting of bolts. The bolts are mounted at the outside of the grid top plate. Spacers to ensure correct distance between the top plate and foundation (correct space for deck lock system), are places in the middle of the grid top plate. The required amount of spacers, depends on the Heligrid type.

Through experiences and developments from the past and requirements from today, we have developed different types of Heligrids:

• HLS 3 (MTOW: 3,000 kg)
• HLS 6 (MTOW: 6,000 kg)
• HLS 10 (MTOW: 10,000 kg)
• HLS 15 (MTOW: 15,000 kg)
• HLS-HD (Heavy Duty)
• HLS-UAV (Drone)
• Specials

Specials consist of different sizes and shapes, such as small grids for testing facilities and different forms/shapes associated with limitations in the various flight deck constructions. Depending on the take-off weight of the helicopter, the maximum desired tensile strength and propelling force, you can determine which Heligrid is best suited to your vessel.

All grids can be executed with:

HeliMat (cover for on top of the HeliGrid)

GridFoundation (weld-in construction for ship decks)

Heligrid combines precision engineering with practical reliability, a low maintenance landing grid that lets you operate safely and independently, offshore or on land, in the most demanding conditions.