Vertical Pitch and Roll Test Facility

Millbrook’s Vertical Pitch and Roll (VPR) facility allows users to conduct buzz, squeak and rattle (BSR) assessments on a range of components including seats and instrument panels.

This is used in conjunction with OEM and / or international standards ensuring consistency and repeatability. Alternatively, customers can use Millbrook’s experience to derive bespoke tests for R&D or one-off test purposes. Millbrook’s VPR facility and experience supports customers in signing off sub assembly systems at design or production validation (DV/PV) levels, reducing future recall and warranty claims.


  • Up to 5 axis simultaneous excitation
  • Low operating noise <32dB(A)
  • Uncooled operation up to 50% of maximum force
  • Max. displacement: 44mm peak-peak
  • Max. velocity: 1.5m/s
  • Max. payload: 225kg
  • Active air spring load support for static test loads of up to 225kg
  • Combination of roll and pitch mode available in a single test
  • 1.5m x 0.6m mounting table
  • M10 threaded inserts on 150mm*150mm grid pattern
  • Fully prepared for environmental testing
  • MB BSR suite
  • Class 1 measuring microphone

Typical Applications

  • BSR (Buzz, Squeak and Rattle)
  • Assessment on cockpits, consoles and other modules
  • Vibration durability testing via continuous running
  • Subjective and objective assessments using BSR sound quality
  • Sine (max): 3,600N peak (continuous-duty)
  • Random (max): 2,160N RMS
  • Time history / shock (instantaneous, max): 7,200N peak
  • Road Load Data (RLD)

Vibration Control System

  • Recorder
  • Analyser and waveform editor for drive signal generation
  • Real-time data acquisition
  • Squeak (creak) and rattle analysis
  • Offline signal processing

The VPR facility offers a high capacity frame that can achieve realistic conditions through simultaneous excitation. Its vibration control system is enabled to replicate recorded time history data, Road Load Data (RLD) and artificial test signals within a quiet room (20Db level).

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