What is a cartridge start?
: a starter for gasoline engines that consists of a cartridge containing an explosive which on being electrically detonated forces the piston forward and starts the engine. — called also combustion starter.
How do airplanes start their engines?
This starting process normally uses an electric motor to spin the main turbine shaft. The electric motor spins the main shaft until there is enough air blowing through the compressor and the combustion chamber to light the engine. Fuel starts flowing and an igniter similar to a spark plug ignites the fuel.
Why do pilots start the right engine first?
It’s generally more convenient, since boarding is on the left side. On smaller aircraft, that’s where the battery is, meaning a shorter cable run for starting (i.e. more power). On some aircraft, the right engine is also the de facto APU (engine brake). Other than that, it doesn’t really matter.
How does a B52 Start?
Normally B-52s are supplied with an alternate energy source and an air supply to start the engines. Using the cart-start launch, an engine with a generator is started immediately, and the remaining engines are started while the aircraft taxis to the end of runway.
How does a B52 start its engines?
Back in the 1960’s nearly all the B-52s had their engines modified with the addition of the MXU-4A cartridge/pneumatic starter which allowed for “cart-starts”. A cart-start uses a pair of pyrotechnics to provide compressed gas to start the engines which allows a B-52 to go from cold to airborne in 10 minutes or less.
Why does rain not affect jet engines?
The majority of storms do not create enough rain or snow to disturb the engines, and the ice crystals that clouds are made of are far too small to affect function. The extreme heat of the combustion chamber provides its own defense mechanism, evaporating these minute levels of moisture almost immediately.
What spins the turbine in a jet engine?
In a reaction engine, expanding gases push hard against the front of the engine. The turbojet sucks in air and compresses or squeezes it. The gases flow through the turbine and make it spin. These gases bounce back and shoot out of the rear of the exhaust, pushing the plane forward.
Can you fly without APU?
Aircraft are allowed in general to fly without an APU. Exceptions are flights with two-engined aircraft and long routes over water or terrain without an alternate airport – so called ETOPS flights. Airports prefer if the APU is not operated due to environmental and financial reasons.
Why is engine 2 started first a320?
Engine #2 is started first because the eng #2 pressurizes yellow hydraulic system which the parking brake and the alternate braking is fed.
What is an APU in a plane?
Description. An Auxiliary Power Unit or APU allows an aircraft to operate autonomously without reliance on ground support equipment such as a ground power unit, an external air-conditioning unit or a high pressure air start cart.
Does the B-52 have a toilet?
Is there any toilet in Boeing B-52 Stratofortress? – Quora. Yes. In fact, one of the duties of the aircraft crew vs. the crew chief, (thank god) was to remove the liner and bring it with them if they had to “do their duty” during a flight.
What is a cartridge starter?
Cartridge starters used on a number of jet engines, including such engines as the Rolls-Royce Avon, which were used in the English Electric Canberra and Hawker Hunter, used a high gas volume cartridge driving a turbine instead of a piston.
When was the electric starter first used on an aircraft?
It was first used on an aircraft in 1936, starting a Junkers Jumo 205 diesel engine. It was eventually adopted as an alternative to electric starters to turn over massive aircraft and tank engines in remote areas where electricity or backup battery power was unavailable.
How do you restart an airplane engine without an electric starter?
With no electric starter installed, engines can be restarted by diving the aircraft to increase airspeed and the rotation speed of the ‘windmilling’ propeller. An aero engine inertia starter uses a pre-rotated flywheel to transfer kinetic energy to the crankshaft, normally through reduction gears and a clutch to prevent over-torque conditions.
How does a starter ring gear start an engine?
Once the engine began moving, the starter ring gear, which was attached to the engine crankshaft, engaged and the engine continued to spin while the ignition system took over and the engine started. Later versions fired the explosion into a geared starter drive, which rotated the engine via the flywheel.