Aircraft Engine Power, Operation, and Components
Aircraft Engine Power and Performance
- Theoretical Power (1) – Energy released from fuel combustion, representing total fuel energy.
- Indicated Power (2) – Power developed by gases acting on the piston.
- Effective Power (3) – Power delivered to the engine’s propeller shaft.
- Maximum Power – The maximum effective power the engine can provide for a short time.
- Nominal Power – The maximum effective power the engine is designed to provide for an extended period.
- Friction Power (5) – Power lost due to friction
Digital Subscriber Line (DSL) & Other Broadband Technologies: A Detailed Look
Digital Subscriber Line (DSL) and Other Broadband Technologies
1. Loop Telephone Modem (DSL)
The primary advantage of Digital Subscriber Line (DSL) is that the necessary infrastructure is already installed. However, the available speeds are relatively low, which restricts the set of accessible services and imposes limitations on the subscriber.
2. Integrated Services Digital Network (ISDN)
Integrated Services Digital Network (ISDN) necessitates restructuring in terms of access to housing. Its use is
Read MoreElectrical Circuit Classification, Protection, and Automation
Electrical Circuit Classification
Electrical circuits can be classified, from an electrical standpoint, into DC circuits and AC circuits. AC circuits may be single-phase or three-phase.
From a technical point of view, electrical circuits can be classified into the following categories:
Scope
- Power circuits: For high consumption devices other than lighting.
- Lighting circuits: For providing electric light in premises and homes.
- Safety and emergency circuits: Legally required in many buildings, such as exit
Wave and Tidal Power: Technologies and Methods
Wave Power Systems
Tapered Channel (TAPCHAN)
The Tapered Channel, or TAPCHAN, is used to divert water into a reservoir. It is generally constructed on a cliff, providing a higher water head. Electricity is generated with the help of a Kaplan turbine placed in the tank that receives the water. The narrowing of the channel increases the wave amplitude, causing it to spill over the walls of the channel and into the reservoir.
Advantages:
- Low maintenance costs
- Reliability
- Use for peak load supply
Disadvantages:
Read MoreADSL and CATV: High-Speed Internet Technologies
Dedicated Access Lines and Terrestrial Communications
Dedicated access lines are lines that are active at any time, providing an “always online” solution with permanently available transmission capacity.
Characteristics of Terrestrial Communications Networks
ADSL over ISDN and PSTN, implemented in our country, allows for the expansion of bandwidth, access speed, and the number of services. Another major form of terrestrial communication is via the networks of cable operators, initially used for cable
Read MorePhilippine Festivals, Islamic Traditions, and Woodworking
Philippine Festivals
Ati-Atihan (3rd week of January, Kalibo, Aklan)
One of the most religious celebrations in the Philippines. A parade of face-painted celebrants in costumes, with tribal dance and drum beats. Also known as the “Filipino Mardi Gras.”
Masskara (19th of October, Bacolod)
“Mass” means crowd and “Kara” means face. Celebrated with smiling masks and face paint, showcasing the title “City of Smiles.”
Sinulog (3rd week of January, Cebu City)
One of the most attended festivals by locals and tourists.