Highlights

  • Orbital Corporation shares closed unchanged at AUD 0.18 on 7 May 2026 after touching an intraday high of AUD 0.20.
  • The company received a USD 392,420 purchase order from a US-based unmanned aircraft systems company.
  • The order includes five 150HFE heavy fuel engines, engineering services and related diagnostic systems.
  • Orbital said the agreement could act as a precursor to a larger recurring “Power by the Hour” Revenue opportunity.
  • he associated US Coast Guard programme could potentially require up to 80 UAS systems over time.

Orbital Corporation Ltd (ASX:OEC) shares finished flat at AUD 0.18 on 7 May 2026, although the stock traded as high as AUD 0.20 earlier in the session before easing back amid late selling activity. The muted close came despite the release of a favourable operational update tied to a new US customer purchase order and a potentially larger long-term defence-related opportunity.

Even with the flat daily finish, Orbital shares have risen approximately 100% over the past year, reflecting increasing investor interest in the company’s unmanned aerial vehicle propulsion technology and expanding exposure to defence-linked unmanned aircraft programmes.

The latest announcement centred on a new purchase order from a US-based unmanned aircraft systems (UAS) company, covering the Supply of five 150HFE heavy fuel engines alongside associated engineering and diagnostic support services. The agreement, valued at USD 392,420, equivalent to around AUD 600,000, is also being viewed by the company as an important strategic step toward a recurring service-based revenue model.

Orbital Corporation is headquartered in Perth, Western Australia, and specialises in the design and manufacture of integrated heavy fuel propulsion systems for Group 2 and Group 3 unmanned aerial vehicles. The company has more than four decades of engineering history and has accumulated over 1.2 million operational service hours across defence-related UAV applications.

Its technology is currently used across multiple Tier 1 defence customers, including Boeing Insitu and Textron Systems, with the company focusing on fuel-efficient propulsion systems designed for endurance and reliability in unmanned operations.

New Purchase Order Linked to Long-Endurance UAS Programme

According to the company, the newly secured order includes five 150HFE engines, a FlexDT diagnostic and ECU management tool, a power management system and non-recurring engineering services.

The engines are intended for deployment in a Group 3 long-endurance unmanned aircraft system that previously completed a demonstrated 24-hour continuous flight during March 2025. The aircraft platform also holds commercially approved Beyond Visual Line of Sight (BVLOS) clearance within the US National Airspace System.

Orbital noted that this latest order is not only tied to immediate hardware supply requirements but may also position the company for future participation in a larger operational programme currently under consideration in the United States.

The company highlighted that the US Coast Guard has issued a Request for Information (RFI) relating to a Contractor Owned Contractor Operated (COCO) UAS Intelligence, Surveillance and Reconnaissance services programme. The proposed programme includes both shore-based and ship-board persistent maritime surveillance operations under a Basic Ordering Agreement that could span five years with an additional five-year extension option.

Based on the RFI details, Orbital estimates the broader programme may eventually require up to 80 unmanned aircraft systems, making it one of the larger sustained COCO UAS ISR opportunities within the US Department of Homeland Security procurement portfolio.

Focus Turns Toward Recurring Revenue Potential

A major focus within the company’s announcement was the potential expansion of Orbital’s “Power by the Hour” or PBH strategy.

The PBH model operates differently from traditional one-off hardware sales. Instead of only supplying engines upfront, Orbital would provide long-term operational support services tied to engine usage and flight hours across customer fleets.

Under this structure, the company would generate recurring revenue through maintenance, overhaul, replacement and ongoing performance support over the life of a service agreement.

Orbital stated that total revenue generated per engine under a PBH arrangement could be approximately three times higher than a standard direct hardware sale across the duration of a service contract.

Management indicated that if the US customer secures work under the broader Coast Guard programme, Orbital may transition from an engine supplier into a long-term PBH service provider by the third quarter of FY2027.

The company added that the current purchase order is therefore being viewed as a strategic precursor to a potentially larger multi-year support relationship rather than a standalone hardware transaction.

At the same time, Orbital clarified that it is currently unable to accurately quantify the future revenue stream that could arise from PBH services linked to the programme.

Engine Technology Remains Central to Orbital’s Positioning

Orbital’s 150HFE engine remains a central component of the company’s UAV propulsion offering.

The air-cooled opposed twin-cylinder heavy fuel engine delivers 11.9 horsepower at 20,000 feet above mean sea level and features a 750-hour Time Between Overhaul rating.

According to the company, the engine is specifically designed to meet endurance and reliability requirements associated with persistent maritime intelligence and surveillance missions.

Orbital also stated that its heavy fuel engine technology has accumulated more than one million hours of operational flight time with the US Navy.

The company’s propulsion systems are supported by its patented FlexDI direct injection technology, which Orbital says can deliver up to 40% greater fuel efficiency compared with conventional injection systems.

The technology also supports multi-fuel capability, including compatibility with JP-5, JP-8, Jet-A and gasoline fuels, while maintaining cold-start capability within two minutes.

Orbital’s production engine range currently spans 50cc to 350cc heavy fuel engines, enabling coverage across the broader Group 2 and Group 3 UAV market.

Delivery Timeline and Engineering Work Already Underway

Orbital confirmed that delivery of the five engines and completion of the related engineering services will occur under a structured milestone payment programme running through to October 2026.

The first non-recurring engineering milestone has already commenced immediately following execution of the purchase order.

The inclusion of engineering services within the agreement reflects the customised nature of UAV integration and operational support required for advanced endurance applications.

For investors, the staged milestone structure may also provide improved visibility over the timing of revenue recognition associated with the contract.

Management Highlights Strategic Importance of Agreement

Chief Executive Officer Stephen Pearce described the order as an important milestone for the company, noting that it validates the capability of Orbital’s 150HFE engine within demanding long-endurance BVLOS operations.

Management also highlighted the potential significance of establishing a longer-term relationship with the US customer should the broader procurement opportunity advance.

According to the company, the strategic value of the arrangement extends beyond the initial hardware order because of the possible recurring revenue profile associated with PBH service contracts.

Orbital further noted that the customer’s unmanned aircraft platform is considered well positioned for the proposed COCO ISR programme.

What This Means for Investors?

Orbital Corporation’s latest announcement appears to reinforce the company’s broader strategy of expanding beyond direct engine sales toward recurring service-based defence aviation revenue streams.

While the immediate purchase order is relatively modest in size at around AUD 600,000, investor attention appears to be focused more heavily on the larger opportunity connected to the US Coast Guard-related ISR programme and the possibility of long-term PBH contracts.

The company’s reference to a potential fleet requirement of up to 80 UAS systems also adds strategic significance to the announcement, particularly given Orbital’s emphasis on recurring operational support revenue rather than one-off hardware transactions.

Although the share price finished unchanged on the day, the stock’s move to an intraday high of AUD 0.20 suggests the market initially responded positively to the update before broader selling pressure reduced gains later in the session.

With Orbital continuing to build its presence within unmanned defence aviation markets and recurring support services, investors are likely to remain focused on whether the company can convert early-stage hardware relationships into larger multi-year operational agreements.