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Journal Article

Study of Sweepback Angles Criterion for Reusable Hypersonic Vehicle

2022-12-02
Abstract At hypersonic speed, severe aerodynamic heating is observed, and temperatures are too high to cool by radiation cooling; active cooling such as ablative cooling is helpful in this situation. ...A Computational Fluid Dynamics (CFD) simulation of a two-dimensional (2D) lifting body against thermally perfect air in a hypersonic region (Mach number, M > 5) is carried out for M = 5–9 to obtain a heat-transfer-minimized sweepback angle (ΛHT-min), at which heat transfer to the vehicle is minimum.
Standard

Unique Wheel and Brake Designs

2022-09-08
CURRENT
AIR5388
This SAE Aerospace Information Report (AIR) has been prepared by a panel of the SAE A-5A Committee and is presented to document unique design approaches used for aircraft wheels and brakes.
Journal Article

Analytical Estimation of Infrared Signature of Converging and Converging-Diverging Nozzles of Jet Engine

2021-04-21
Abstract Jet engine hot parts (e.g., jet nozzle) are a crucial source of aircraft’s infrared (IR) signature from the rearview, in 1.9-2.9 μm and 3-5 μm bands. The exhaust nozzle design used in a jet aircraft affects its performance and IR signature (which is also affected just by performance) from the engine layout. For supersonic aircraft (typically for M ∞ > 1.5), a converging-diverging (C-D) nozzle is preferred over a convergent nozzle for optimum performance. The diverging section of the C-D nozzle has a full range of visibility from the rearview; hence, it was not considered a prudent choice for low IR observability. This theoretical study compares the IR signature of the C-D nozzle with that of the convergent nozzle from the rearview in 1.9-2.9 μm and 3-5 μm bands for the same thrust.
Magazine

Aerospace & Defense Technology: April 2021

2021-04-01
Developing a 6DoF Aircraft Munitions Optical Tracking System Plasma Nitride Surface Hardening of Titanium for Aerospace and Armament Applications The Future of Aircraft Electrification Shielding Aerospace Systems from Electromagnetic Interference Improving Transmit/Receive Module Test Accuracy and Throughput Army Detects Broadest Frequencies Ever with Quantum Receiver A Comparative Evaluation of the Detection and Tracking Capability Between Novel Event-Based and Conventional Frame-Based Sensors This research establishes a fundamental understanding of the characteristics of event-based sensors and applies it to the development of a detection and tracking algorithm. Sensory Integration Balance Deficits in Complex mTBI: Can Early Initiation of Rehabilitation with Wearable Sensor Technology Improve Outcomes?
Article

Space launch providers submit proposals for National Security Space Launch program

2019-08-16
Four companies – Blue Origin, Northrop Grumman Innovation Systems, SpaceX, and United Launch Alliance (ULA) – recently submitted proposals for the U.S. Air Force's Phase 2 Launch Services Procurement (LSP) competition. Two of those companies will be awarded with up to 34 launches over a five-year period under the National Security Space Launch (NSSL) program.
Article

Made In Space is set to make in space

2019-07-17
Once in orbit, Archinaut One will use additive manufacturing techniques – or 3D printing – to create two 32-foot beams extending out from each side of the spacecraft. As manufacturing progresses, each beam will unfurl two solar arrays that generate up to five times more power than traditional solar panels on spacecraft of similar size.
Article

Orion launch abort system passes full-stress flight test

2019-07-09
The system is designed to lift the crew module off the launch vehicle’s engine stack in case of an emergency and steer it away from danger. According to NASA coverage, engineers have confirmed that the LAS can “outrun a speeding rocket.”
Article

Dragonfly will be NASA’s next solar system explorer

2019-06-28
Dragonfly, which might be called a rotorcraft lander, is under development by the Johns Hopkins University Applied Physics Laboratory and has the appearance of an Earth-bound vertical take-off and landing (VTOL) unmanned aircraft system (UAS) or drone.
Article

AIA predicts flying air taxis, supersonic air travel, and space industry for 2050

2019-03-15
In the “What’s Next for Aerospace and Defense: A Vision for 2050” study, AIA, New York City-based McKinsey & Company, and other industry partners reveal a comprehensive 30-year, Industry 4.0 forecast of air travel and spaceflight based on improvements in automation and digitization, next-generation materials, alternative energy sources and storage, and increased data throughput.
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