Total Pressure and Static Pressure Probe, Model 4420 Series L-Type
| Brand | — |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | 4420 Series L-Type |
| Pricing | Upon Request |
Overview
The Total Pressure and Static Pressure Probe, Model 4420 Series L-Type, is a precision aerospace-grade pitot-static sensor engineered for reliable measurement of total (stagnation) pressure and static pressure in flight test, unmanned aerial vehicle (UAV) development, and ground-based wind tunnel applications. Based on the fundamental principles of fluid dynamics and Bernoulli’s equation, this probe enables accurate derivation of calibrated airspeed (CAS), equivalent airspeed (EAS), and Mach number when integrated with compatible air data computers or avionics systems. Its L-shaped configuration provides optimal spatial separation between total and static pressure orifices to minimize flow interference and ensure high-fidelity pressure differential resolution under dynamic airflow conditions. Designed for integration into both fixed-wing and rotary-wing platforms—including light aircraft, general aviation trainers, and medium-class UAVs—the probe complies with standard mechanical and environmental requirements for non-certified and experimental aircraft installations.
Key Features
- L-shaped structural geometry optimized for minimal aerodynamic disturbance and consistent pressure sampling across varying angles of attack and sideslip
- Integrated electric heating element for anti-icing functionality, supporting operation in icing conditions per RTCA DO-160 Section 22 (Environmental Conditions and Test Procedures)
- Standardized AN5812 and AN5814 mechanical mounting interfaces for direct compatibility with legacy and modern airframe installation practices
- Compact physical envelope: 2.86 in × 6.36 in (72.64 mm × 162.54 mm), facilitating integration into space-constrained airframes
- Low mass design: 0.35 lb (0.159 kg), minimizing inertial loading and vibration sensitivity during high-G maneuvers
- Calibrated for nominal maximum calibrated airspeed of 450 knots (231 m/s), suitable for subsonic and transonic flight regimes
- Stainless steel construction with passivated surface finish for corrosion resistance and long-term stability in humid, saline, or polluted environments
Sample Compatibility & Compliance
The 4420 Series L-Type probe is compatible with conventional analog air data systems utilizing 0–5 VDC or 4–20 mA pressure transducer outputs, as well as digital avionics buses including ARINC 429 and RS-422 when interfaced via external signal conditioning modules. It meets mechanical interface specifications outlined in SAE AIR1168/1 and aligns with dimensional and functional expectations defined in MIL-STD-704F for aircraft electrical power compatibility. While not certified to TSO-C16a or ETSO-C16a, the probe is intended for use in experimental, light-sport, and developmental aircraft where traceable calibration and documented performance verification are maintained per internal quality procedures or GLP-aligned test protocols. Documentation includes full dimensional CAD models (STEP and IGES formats), mounting hardware specifications, and technical parameter sheets compliant with ISO 9001 documentation standards.
Software & Data Management
This probe operates as a passive sensing element and does not include embedded firmware or onboard software. However, its analog pressure outputs are fully compatible with industry-standard air data acquisition systems such as National Instruments DAQmx platforms, Dewesoft X, or MATLAB/Simulink real-time data logging environments. When paired with calibrated secondary instrumentation, it supports traceable data acquisition workflows compliant with ASTM E2500-21 (Guide for Specification, Design, and Verification of Pharmaceutical and Biopharmaceutical Manufacturing Systems) — adapted for aerospace test data integrity. Full audit trail capability, including time-stamped pressure readings and environmental metadata, is achievable through external system configuration adhering to FDA 21 CFR Part 11 requirements where applicable in dual-use R&D settings.
Applications
- Flight testing of small-to-medium fixed-wing and rotorcraft platforms, including certification support for Part 23 Amendment 6 and EASA CS-23 compliance verification
- UAV aerodynamic characterization and control law validation in developmental flight test programs
- Wind tunnel instrumentation for model-scale and full-scale static and dynamic pressure mapping
- Ground-based airspeed calibration rigs and pitot-static system bench testing
- Academic and research laboratory instruction in aerodynamics, fluid mechanics, and avionics integration
FAQ
Is this probe certified for use in type-certified aircraft?
No. The 4420 Series L-Type probe is intended for experimental, developmental, and non-certified applications. Integration into FAR Part 23 or EASA CS-23 certified aircraft requires additional TSO authorization and OEM approval.
What calibration documentation is provided?
A NIST-traceable calibration certificate is available upon request, specifying pressure range, uncertainty budget, and test conditions per ISO/IEC 17025:2017 requirements.
Can the probe be used without the heating function?
Yes. The heater circuit is independently wired and may be omitted or disabled during installation if operating in non-icing environments.
Are CAD files included with purchase?
Yes. STEP, IGES, and PDF dimensional drawings are supplied with each unit for mechanical integration planning.
What pressure output types are supported?
The probe delivers raw total and static pressure ports; output signal conditioning (e.g., voltage or current conversion) must be implemented externally using compatible transducers or air data modules.
