Browse Topic: Booster rocket engines
This recommended practice is intended as a guide for the specification of electrohydraulic mechanical feedback servoactuators used for position control. It provides performance definitions and capabilities that are specific to mechanical-feedback servoactuators and different from those applicable to electrical-feedback servoactuators
A concept for recovering reusable spacecraft or capsules, or reusable rocket boosters, has them land on an airbag-based, cushioned platform positioned on a highly maneuverable hovercraft. This landing method would have performance advantages over conventional approaches to reusability by placing most of the landing function on the hovercraft while maintaining the safety benefit of an open ocean landing away from populated areas; however, it would be similar to a dry landing as the spacecraft or booster would not enter the water
Decelerator System Simulation (DSS) is a computer program for predicting and analyzing the dynamics of a load of cargo dropped with parachutes from an aircraft. A DSS simulation runs from the first motion in the aircraft until the payload reaches the ground. Intended for use in support of airdrop tests for the X-38 program, DSS was developed by modifying and augmenting an older program, denoted UD233A, used for simulating the dynamics of a space-shuttle solid rocket booster falling with a parachute. The main effort in converting UD233A into DSS involved development of computational models for simulating the inflation of one or more parachute( s), the dynamics of the payload and the slings connecting the parachute( s) with the payload, and the extraction of the payload and parachutes from the aircraft
A special-purpose tool has been developed for measuring the depths of defects on an O-ring seal surface. The surface lies in a specially shaped ringlike fitting, called a “capture feature tang,” located on an end of a cylindrical segment of a case that contains a solid-fuel booster rocket motor for launching a space shuttle. The capture feature tang is a part of a tang-and-clevis, O-ring joint between the case segment and a similar, adjacent cylindrical case segment. When the segments are joined, the tang makes an interference fit with the clevis and squeezes the O-ring at the side of the gap
The term "Marshall Convergent Coating-1" ("MCC-1") denotes an improved formulation and a concomitantly improved method of spray deposition of a cork-and-glass-filled epoxy ablative thermal-insulation material. MCC-1 has been used on the space shuttle solid rocket booster and on some Air Force and commercial rockets, and at least one aircraft manufacturer has expressed interest in commercial applications of MCC-1
Two airborne spectrum analyzers were developed for acquiring dynamic data, characterized by frequencies up to 25 kHz, from a hypersonic-crossflow-transition experiment aboard the air-launched Pegasus® space booster rocket (see Figure 1). Real-time transmission of time histories of the dynamic data via a pulse-code modulation (PCM) telemetry encoder would have required sample rates of at least 50,000 s -1. The telemetry bandwidth necessary to support rates as high as this was not available; however, conversion of the data to the frequency domain aboard the rocket would make it possible to trade frequency resolution for a reduction in telemetry bandwidth. The two airborne spectrum analyzers implement this type of conversion. One spectrum analyzer is based on a swept-tuned receiver; the other is based on digital signal processing technology. The remainder of this article describes the swept-tuned spectrum analyzer
Items per page:
50
1 – 11 of 11