ELIOS 3 vs other indoor drones – honest practical comparison for industrial confined space inspection

ELIOS 3 vs. Other Indoor Drones: An Honest Comparison

Which drone is the right choice for industrial confined space inspections? Based on our practical experience since 2017 – not data sheet comparisons, but real deployment capability under industrial conditions.

Questions? Request a feasibility assessment | +49 421 408 937 90

Why This Comparison?

The market for inspection drones is growing. DJI, Skydio, Hovering Solutions and others increasingly offer indoor-capable models. The question we hear most often in client conversations: Why specifically the ELIOS 3? What can it do that others cannot?

This comparison is based on our practical experience since 2017 – numerous inspections in tanks, boilers, chimneys, silos and other confined spaces. We compare not data sheets, but real deployment capability under industrial conditions.

The 5 Criteria That Count for Confined Spaces

For industrial confined space inspections, what matters is not megapixels or top speed, but these five criteria:

Collision ProtectionCan the drone survive contact with walls, pipes and internals without crashing?

GPS-Independent NavigationDoes positioning work without GPS – in tanks, boilers and shafts?

Industrial-Grade SensorsLiDAR, thermography, 4K – simultaneously available in a single flight?

Environmental ResistanceDust, moisture, darkness, temperature – does the drone withstand industrial conditions?

Manhole CompatibilityDoes the drone fit through a DN 600 manhole (60 cm) – the standard access point in industry?

ELIOS 3: The Industry Reference

Flyability ELIOS 3 – key data:

Protective cage: Carbon fibre, fully enclosed, Flip-Recovery (autonomously self-rights)
Size: approx. 50 × 45 cm → fits through DN 600
Navigation: LiDAR-SLAM (FlyAware™ Engine), GPS-independent, real-time 3D live map
Camera: 4K (3840×2160, 30 fps)
LiDAR: Ouster OS0-128, centimetre-accurate, 1.31 million points/sec, IP68
Thermography: Radiometric (optional)
UT: Wall thickness measurement (optional)
Lighting: 16,000-lumen LED (3 modes)
Protection class: IP44 (drone), IP68 (LiDAR payload)
Colorization: Colourised 3D point clouds (since 2025)
Smart Return-to-Home: Automatic return to launch point (since 2025/26)

Flyability drone in steelworks hall – indoor drone comparison

Consumer/Prosumer Drones in Confined Spaces

DJI Avata 2 / DJI FPV

Protective cage: No (prop guards optional, but not collision-safe)
Navigation: GPS-based → non-functional in confined spaces
LiDAR: No
Thermography: No
Protection class: Not IP-rated
Verdict: Not suitable for industrial confined spaces. FPV drones are designed for outdoor/visual inspections, not for GPS-denied, dusty, dark interiors.

DJI Matrice 350 RTK + Payload

Protective cage: No
Navigation: RTK-GPS (outdoor) → non-functional indoors
LiDAR: External payload possible (Livox), but not SLAM-supported in confined spaces
Size: Far too large for manholes
Verdict: Excellent outdoor drone, but not suitable for confined spaces.

Consumer and prosumer drones are not suitable for industrial confined spaces – they lack a protective cage, GPS-independent navigation and industrial-grade protection.

Specialist Indoor/Inspection Drones

Skydio X10 / X2E

Protective cage: No (obstacle avoidance via 360° cameras)
Navigation: Visual SLAM (good for structured environments)
LiDAR: Limited (not comparable to Ouster OS0-128)
Thermography: Optional
Confined space: Limited suitability (no protective cage = crash risk on contact)
Verdict: Good for GPS-denied outdoor/indoor environments with space, but risky in narrow confined spaces.

Scout 137 (Hovering Solutions)

Protective cage: Yes (similar concept to ELIOS)
Navigation: Visual SLAM
LiDAR: Limited
Thermography: Optional
Industry maturity: Small market share, less field experience
Verdict: Interesting newcomer, but ecosystem and industrial experience not comparable to Flyability.

Tilt Robotics

Focus on cable-guided systems for vertical shafts
No free flight possible
Specialised, but limited flexibility compared to ELIOS 3.

Comparison Table: What Counts in Practice

Criterion	ELIOS 3	DJI FPV/Avata	DJI M350	Skydio X10
Protective cage	✓ Carbon	✗	✗	✗
LiDAR-SLAM	✓ Ouster 128	✗	✗ (GPS)	⚠ Visual
DN 600 compatible	✓ 50×45 cm	⚠ tight	✗ too large	⚠
IP protection	✓ IP44/68	✗	IP45	IP55
Thermography	✓ Radiometric	✗	✓ (Zenmuse)	✓
16,000-lumen lighting	✓	✗	✗	✗
Tether (unlimited flight)	✓	✗	✗	✗
Confined space suitable	✓✓	✗	✗	⚠ conditionally

Note: Data based on publicly available specifications and our field experience. Other manufacturers may offer comparable solutions in the future.

Why We Use the ELIOS 3

We are not a Flyability dealer – we are inspection service providers who have been working with Flyability drones since 2017. Our reasons:

Field-ProvenHundreds of deployments in real industrial plants – tanks, boilers, chimneys, silos, shafts. We know limitations and strengths first-hand.

EcosystemFlyability Cloud (Inspector 5) for post-processing, colorization and reporting. Not an isolated solution.

Sensor Combination4K + LiDAR + thermography + UT in one system. No drone swap between sensors required.

Support & UpdatesRegular firmware updates (Colorization, Return-to-Home, Tether option) demonstrate active development.

Industry AcceptanceThe ELIOS series has the broadest industrial acceptance for confined space inspections worldwide.

Conclusion: There Is No “Second-Best” Option for Confined Spaces

For outdoor inspections, there are many good alternatives (DJI Matrice series, Skydio etc.).

For genuine confined space inspections – through DN 600 manholes, in dark tanks, dusty boilers and complex shafts – the ELIOS 3 as of 2026 is the only system delivering protective cage + LiDAR-SLAM + 4K + thermography + IP44 + tether in one package.

That is not a marketing claim – it is the reality we have confirmed in hundreds of inspections.

If you are unsure: contact us for an informal assessment of whether the ELIOS 3 is the right solution for your specific application.

Flyability ELIOS 3 – All details on the collision-safe indoor drone for confined spaces.
Confined Space Inspection – Safe inspection of confined spaces without human entry.
Tank Inspection – Drone-assisted tank inspection without human entry and scaffolding.
Industrial Inspection – Professional drone inspection for industrial plants across all sectors.
Silo Inspection – Inspection of silos and bunkers without confined space entry.
Chimney Inspection – Condition survey of chimneys and flue gas ducts without climbers.

Your Contacts

Christian Engelke and Karsten Lehrke – Kopterflug inspection team

Christian Engelke and Dipl.-Ing. Karsten Lehrke – your direct contacts for drone selection and confined space inspection.

Christian Engelke – Founder and Drone Pilot

Christian Founder & Drone Pilot

Karsten Lehrke – Founder and Managing Director

Karsten Founder, Managing Director

Philipp Founder, Operations & Logistics

Juliana Drone Pilot

Stephan Operations & Logistics

Speak directly with our team: Contact us | Phone: +49 421 408 937 90

Frequently Asked Questions about the Drone Comparison

Can I use a cheaper drone for my tank inspections?

For a purely visual first assessment in accessible areas, possibly. For a professional inspection with LiDAR survey, thermography and complete documentation in a genuine confined space: the ELIOS 3 currently has no comparable alternative.

Why not simply use a DJI drone with FPV goggles?

FPV drones without a protective cage do not survive wall contact – in narrow confined spaces, wall contact is almost inevitable. Additionally, LiDAR navigation, IP protection and industrial-grade lighting are absent.

Will there be better alternatives in the future?

Very likely. The market is developing rapidly. As an inspection service provider we are technology-agnostic and regularly evaluate new systems. As soon as an alternative surpasses the ELIOS 3 in relevant criteria, we will deploy it.