This Aerospace Standard covers Flight Director Equipments which display to the pilot a computed command for the operation of an aircraft in accordance with selected Mode(s). The term “Equipment” may include controls, displays, computers, etc. and may include sensors if furnished as a part of the Flight Director.

A-4 Aircraft Instruments Committee

Replacing Multiple RF Receivers with Just One Using Channelization

TBMG-3824312/01/2020

From the early days of analog radio receivers to the superheterodyne channelized receivers of today, many things have changed. Today, different technologies are in use and their capabilities have grown immensely. This article will give you a brief overview of the development of radio receivers. Furthermore, it will show how channelization has made it possible to use one radio receiver to listen to many different radio stations simultaneously.

Air Force Technology Tracks “Sporadic E”

TBMG-3823812/01/2020

Replacing Multiple RF Receivers with Just One Using Channelization

20AERP12_0512/01/2020

From the early days of analog radio receivers to the super-heterodyne channelized receivers of today, many things have changed. Today, different technologies are in use and their capabilities have grown immensely. This article will give you a brief overview of the development of radio receivers. Furthermore, it will show how channelization has made it possible to use one radio receiver to listen to many different radio stations simultaneously.

Air Force Technology Tracks “Sporadic E”

20AERP12_0612/01/2020

Researchers at the Air Force Research Laboratory (AFRL) in New Mexico have discovered a new way to track and characterize a phenomenon called “Sporadic E” that naturally occurs in the upper atmosphere where large structures of dense plasma form. These plasma structures, which occur at mid-latitude locations around the world, disrupt radio frequency (RF) electromagnetic waves (or simply “radio waves”) and impact both DoD and civilian radio systems in positive and negative ways, depending on the application. “Previous methods to observe these structures were insufficient for identifying and tracking these structures over large regions,” said Ken Obenberger, research physicist at AFRL. “It would be advantageous to actively identify where these structures are, where they are going, and how dense they are and we thought we could find a better way.”

Connectors, Fiber Optic, Advanced, Circular or Rectangular, Plug and Receptacle, Environment Resistant, Removable Termini/Contacts, General Specification For

AS5590B (Current)

11/30/2020

This specification covers the performance requirements for a plug and receptacle. The connector inserts may contain multiple termini or multiple termini and electrical contacts. The connectors use removable termini, or removable termini and electrical contacts, and are capable of operating within a temperature range of −65 to +200 °C (see 1.2.1.1). These connectors are supplied under AS9100 reliability assurance program.

AS-3 Fiber Optics and Applied Photonics Committee