2024年2月21日 · A line-of-sight projection from the pilot's eye, through the velocity vector symbol, depicts the instantaneous flight path of the orbiter. Precise adjustments in flight path can be accomplished, as required, by overlaying the velocity vector symbol on the desired aim point.

During current shuttle operations, only two phases of PEG are used, constant thrust through 3g and then variable thrust through main engine cutoff (MECO). STS-1 and STS-26, in order to prevent or reduce abort gaps, flew higher than normal trajectories, called lofted or abort shaped.

During later lifting-body approach and landing studies, the ability to land at any number of landing sites, caused by either a launch abort or emergency re-entry, was improved upon by adding virtual precision approach path indicator (PAPI) lights to serve as an aiming point for the outer glideslope portion of the landing approach.

The equilibrium glide flight is defined as flight in which the flight path angle, the angle between the local horizontal and the local velocity vector, remains constant. Equilibrium glide flight provides the maximum downrange capability. It lasts until the drag acceleration reaches 33 …

2012年7月7日 · The Flight Path Vector is a small unobtrusive icon located on the PFD that pays large dividends when used correctly. Not only can this device warn you of impeding problems but it can be used to facilitate greater flight accuracy in a number of conditions including approach, straight and level flight, and crosswind landings.

flight path angle - angle between desired velocity vector and local horizontal. The first constraint can be easily and uniquely written in XYZ form as a vector normal to the target plane (we can use Euler formulas to calculate it knowing INC and LAN angles), explicitly describing where the orbit will be and what will be the direction of motion.

Look far in front of you and maintain the Flight Path Vector ( Circle) just below the horizon line and wait for the Touch around 200 kt. Touch and activate the Drag Chute with Maj+C or with cockpit switch.

The central concept of Space Shuttle navigation is the state vector of the vehicle. As the name states, it describes the state of the spacecraft at a given instance in time, i.e. it contains a timestamp, the three position coordinates (measured in an inertial coordinate frame), the three velocity vector components and the three attitude angles ...

The principles of flight dynamics are used to model a vehicle's powered flight during launch from the Earth; a spacecraft's orbital flight; maneuvers to change orbit; translunar and interplanetary flight; launch from and landing on a celestial body, with or without an atmosphere; entry through the atmosphere of the Earth or other celestial body ...

2010年5月4日 · The flight path vector symbol provides the pilot with the A/C present flight path angle and the A/C present track information. This symbol provides the pilot with the display of his actual flight path trajectory, in longitudinal and in vertical so that he sees no discontinuity when "switching" from this symbol on the PFD to the view ...