Daimler Chrysler Ag

Eads Deutschland Gmbh

Guenther Mueller

Michael Gruenewald

Josef Steigenberger

Joseph Steigenberger

Clemens Moeser

A sound pressure level calibrator, which is suitable for sound pressures to be measured in excess of 124 dB and which can be adapted to the installed sound pressure level sensor. This object is attained by a sound pressure level calibrator comprising a pistonphone and a high-pressure adapter connected to the output of the pistonphone. The high-pressure adapter acts as a resonator. With an expanded adapter opening the high-pressure adapter is connected in soundproof manner with the sound pressure level sensor, which is inserted into a structure. The invention can be used for a sound pressure level calibrator to calibrate a sound pressure level sensor, which is integrated into a structure.

Acoustic pressure calibrator

An adaptive flow body is provided whose profile can be adapted to different operating requirements regarding lift and crosswinds, flow resistance, and steering. The rear part of the flow body is divided into two rear partial profiles by a slot that penetrates from the trailing edge toward the middle part in the lengthwise direction of the flow body profile. These rear partial profiles each also have a flexible inner skin and flexible outer skins fastened continuously on the middle part. An actuator with pushing or pulling movements acts on each inner skin, which movements are transmitted by joints from the inner skin to internal structural elements which transmit these movements through rigid connections as bending moments to the outer skin. The adaptive flow body has a rigid middle part, a forward leading part, and a rear trailing part fastened thereto, with flexible cladding that covers the leading and trailing edges, and structural elements located in the front or rear parts and driven by actuators which act on the flexible cladding.

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Maitenbeth, Germany

Guenther Mueller