23:06 Feb 10, 2012
This question was closed without grading. Reason: No acceptable answer

German to English translations [PRO]
Tech/Engineering - Automotive / Cars & Trucks / motorcycle helmets
German term or phrase: pendelneutral
Seems to be a term that is hardly ever used outside of the vocabulary of this particular manufacturer? Or is this a bona fide term from the world of aerodynamics?

Not quite sure... One previous translation was 'pendulum neutral', which I find a bit odd.

Any suggestions that add a bit of elegance?

Thanks much for your help.

Example sentence:

aerodynamische Form
richtungsstabil und *pendelneutral*
kein Buffeting
Stefanie Reinhold
United States
Local time: 12:07

Summary of answers provided
2 -1horizontally stable
Zareh Darakjian Ph.D.

Discussion entries: 4



33 mins   confidence: Answerer confidence 2/5Answerer confidence 2/5 peer agreement (net): -1
horizontally stable

Apparently the fuselage acts as a pendulum to restore the horizontal stability of the wings that may have tipped..

At least that's my understanding of this .. according to the source ehre:

Note added at 36 mins (2012-02-10 23:42:59 GMT)

May be it is better to use the more accurate term:

"lateral stability".. here is a paragraph from the reference above.

**Lateral stability** is achieved through dihedral, sweepback, keel effect and
proper distribution of weight.
The dihedral angle is the angle that each wing makes with the horizontal (see
Wing Geometry).
If a disturbance causes one wing to drop, the lower wing will receive more lift
and the aircraft will roll back into the horizontal level.

A sweptback wing is one in which the leading edge slopes backward.
When a disturbance causes an aircraft with sweepback to slip or drop a wing,
the low wing presents its leading edge at an angle more perpendicular to the
relative airflow. As a result, the low wing acquires more lift and rises, restoring
the aircraft to its original flight attitude.

The keel effect occurs with high wing aircraft. These are laterally stable simply
because the wings are attached in a high position on the fuselage, making the
fuselage behave like a keel.
When the aircraft is disturbed and one wing dips, the fuselage weight acts like
a **pendulum** returning the aircraft to the horizontal level.

Zareh Darakjian Ph.D.
United States
Local time: 10:07
Native speaker of: Native in EnglishEnglish, Native in ArmenianArmenian
PRO pts in category: 12

Peer comments on this answer (and responses from the answerer)
disagree  Werner Hehn: How can a pendulum possibly RESTORE STABILITY???
14 hrs
  -> It's just a name. YOu may read the explanation given above to see that a pendulum is not restoring balance..
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