# US 4,398,685 A · Aerial day/night refueling stations

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- Number: US 4,398,685 A
- Document ID: US4398685A
- Status: Granted
- Kind: A
- Application number: 06/242,817
- Filed: 1981-03-11
- Granted: 1983-08-16
- Earliest claimed: 1981-03-11
- Assignees: The United States of America as represented by the Secretary of the Air Force
- Inventors: Harry L. Task; John F. Courtright; Louis V. Genco
- Web page: https://patentgrep.com/patent/US4398685A

## CPC

- B64D 39/00: Refuelling during flight
- B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT

## Abstract

An improved aerial refueling system, suitable for operation under nighttime or other limited visibility conditions, is described, and comprises a tanker aircraft with refueling boom depending rearwardly thereof, a receiver aircraft having a fuel receptacle for interconnection with the boom, means disposed on the tanker for illuminating the receiver aircraft with infrared light during hookup and refueling, infrared sensitive viewing means and an optical imaging device on the tanker through which the boom operator may view the boom and receiver aircraft to guide the boom into position for connection with the receiver aircraft.

## Claims

### Claim 1

An aerial refueling system comprising:
a. a tanker aircraft having a refueling line depending rearwardly thereof;
b. a receiver aircraft having means thereon for engaging said refueling line;
c. infrared lighting means positioned on said tanker aircraft above said refueling line for illuminating said refueling line and receiver aircraft so as to cast a shadow of said refueling line on said receiver aircraft when said receiver aircraft is in close proximity to said line behind and below said tanker, said shadow serving as an indicia of the distance from said line to said engaging means on said receiver aircraft; and
d. infrared sensitive viewing means disposed on said tanker aircraft through which said receiver aircraft, refueling line, and the shadow of said refueling line cast on said receiver aircraft by said infrared lighting means may be simultaneously viewed.

### Claim 2 (depends on 1)

The aerial refueling system as recited in claim 1 further comprising an optical imaging means for imaging onto the field of view of said infrared sensitive viewing means symbology describing operational parameters of said aerial refueling system.