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Remote Servoed Air Data Instruments for Subsonic Aircraft
- Aerospace Standard
- AS791
- Reaf. Nonc.
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This standard provides minimum performance criteria for air data instruments intended to provide cockpit indication of:
-
a
Indicated airspeed (Vi)
-
b
Computer airspeed (Vc)
-
c
True airspeed (Vt)
-
d
Equivalent airspeed (Ve)
-
e
Mach number (M)
-
f
Altitude (H)
-
g
Vertical speed (Hpr)
-
h
Maximum operating limit speed (Vmo)
-
i
True angle of attack (αt)
-
j
Free air temperature (Tfat)
-
k
Total temperature (Tt)
These functions shall be derived from a central air data computer (AS 417) and through system wiring applied to the respective indicator.
Recommended Content
| Aerospace Standard | Pressure Altimeter Systems |
| Aerospace Standard | Air Data Computers, MPS |
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| Unnamed Dataset 4 | ||
| Table I | Electrical Zero Test | |
| Table II | Scale Factor Indicated or Computed Airspeed (V , V ) | |
| Table III | Scale Factor Equivalent Airspeed (V ) | |
| Table IV | Scale Factor True Airspeed (V ) | |
| Table V | Scale Factor Mach Number (M) | |
| Table VI | Scale Factor Altitude (H) | |
| Table VII | Scale Factor Vertical Speed (H ) | |
| Table VIII | Scale Factor True Angle of Attack (α) | |
| Table IX | Scale Factor Free Air Temperature (T ) | |
| Table X | Scale Factor Total Temperature | |
| Table XI | Scale Error | |
| Table XII | Maximum Slew Time Full Range | |
| Table XIII | Servo Response |
Issuing Committee
A-4 Aircraft Instruments Committee
The A-4 Committee is responsible for mechanical, electromechanical and electronic cockpit instrumentation standards applicable to all civil aircraft, with emphasis on minimum performance standards intended for reference in the Federal Aviation Administration (FAA) Technical Standard Orders (TSO).
A list of the technical reports developed by the A-4 Committee can be obtained by searching on 'aircraft instruments' and selecting 'standards', from the SAE Home Page. A-4 Standards For additional information about the A-4 Committee or SAE, contact Maureen Lemankiewicz mlemank@sae.org Let us contact you about suitable committee participation opportunities. Advise us of an industry issue for an SAE Technical Committee.Reference
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