US 12,110,091 B2
Centrifugal compressor based altitude control device with active valve system
Kevin Anderson, Sunnyvale, CA (US); and Keegan Gartner, Mountain View, CA (US)
Assigned to Aerostar Inernational, LLC
Filed by Aerostar International, LLC, Columbia, MD (US)
Filed on Jul. 28, 2022, as Appl. No. 17/815,709.
Application 17/815,709 is a continuation of application No. 16/134,135, filed on Sep. 18, 2018, granted, now 11,414,170.
Prior Publication US 2024/0043109 A1, Feb. 8, 2024
Int. Cl. B64B 1/70 (2006.01); B64B 1/40 (2006.01); B64B 1/62 (2006.01); F04D 27/02 (2006.01); F04D 29/44 (2006.01)
CPC B64B 1/70 (2013.01) [B64B 1/40 (2013.01); B64B 1/62 (2013.01); F04D 27/0215 (2013.01); F04D 29/441 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An altitude control system for an unmanned aerial vehicle, comprising:
a compressor assembly defining a plenum therein;
a passive valve assembly coupled to a first portion of the compressor assembly and in fluid communication with the plenum and adapted to inhibit flow of fluid through an aperture of a diffuser; and
an active valve assembly coupled to a second portion of the compressor assembly and in fluid communication with the plenum and adapted to inhibit flow of fluid through an aperture of a diffuser.